N

Nelson, L., van der Lande, V. & Robson, E.A. 1980. Fine structural and histochemical studies on salivary glands of Peripatoides novae-zealandiae (Onychophora) with special reference to acid phosphatase distribution. Tissue and Cell 12: 405-418.

New, T.R. 1995. Onychophora in invertebrate conservation: priorities, practice and prospects. Zoological Journal of the Linnean Society 114: 77-89.

Newlands, G. & Ruhberg, H. 1978. Onychophora. In: Biogeography and Ecology of Southern Africa, Part 2 [Monographiae Biologicae, vol. 31, part 2]. M. J. A. Werger, ed. Dr. W. Junk Publishers, The Hague, Netherlands. 677-684.

Nicholls, H.A.A. 1888. Fauna and flora of the Lesser Antilles (On Peripatus of Dominica). Nature 38: 566.

Nicolas, A. 1889. Sur les rapports des muscles et des éléments épithéliaux dans le pharynx du Péripate (Peripatus capensis). Revue Biologique du Nord de la France 2: 81-98.

Nielsen, C. 2001. Animal Evolution: Interrelationships of the Living Phyla, 2nd ed. Oxford University Press, Oxford.

Nieuwkoop, P.D. & Sutasurya, L.A. 1981. Onychophora. In: Primordial Germ Cells of the Invertebrates: From Epigenesis to Preformation Cambridge University Press, Cambridge. 104-107.

Nogueira, M.I. & Lavallard, R. 1984. A study of the intestinal secretion by Peripatus (Macroperipatus) acacioi Marcus & Marcus (Onychophora: Peripatidae). Brazilian Journal of Medical and Biological Research 17: 502.

Nogueira, M.I. & Lavallard, R. 1985. Membranes péritrophiques et uricothélisme chez Peripatus acacioi Marcus et Marcus (Onychophora: Peripatidae). Comptes Rendus de l'Académie des Sciences, Serie III: Sciences de la Vie 300: 185-190.

Norman, J.M. & Tait, N.N. 2004. Light and electron microscopy of the egg membranes and oviduct of the oviparous peripatus Planipapillus mundus (Onychophora: Peripatopsidae). Microscopy and Microanalysis 10: 244-245.

Norman, J.M. & Tait, N.N. 2008. Ultrastructure of the eggshell and its formation in Planipapillus mundus (Onychophora: Peripatopsidae). Journal of Morphology 269: 1263-1275.

Nylund, A., Ruhberg, H., Tjonneland, A. & Meidell, B. 1988. Heart ultrastructure in four species of Onychophora (Peripatopsidae and Peripatidae) and phylogenetic implications. In: Sarcomeric and non-sarcomeric muscles: basic and applied research prospects for the 90's. U. Carraro, ed. Unipress Padova, Padova. 317-322.

Nylund, A., Ruhberg, H., Tjonneland, A. & Meidell, B. 1988. Heart ultrastructure in four species of Onychophora (Peripatopsidae and Peripatidae) and phylogenetic implications. Zoologische Beiträge 32: 17-30.

P

Packard, A.S. 1883. Note on a Peripatus from the Isthmus of Panama. American Naturalist 17: 881-882.

Packard, A.S. 1883. The structure and embryology of Peripatus. American Naturalist 17: 882-884.

Packard, A.S. 1898. Relations of Peripatus to insects. In: A text-book of Entomology . A. S. Packard, ed. The MacMillan Company, New York. 9-11.

Paling, J. 1969. Peripatus - the insect-worm. Animals [London] 12: 176-177.

Panganiban, G., Irvine, S.M., Lowe, C., Roehl, H., Corley, L.S., Sherbon, B., Grenier, J.K., Fallon, J.F., Kimble, J., Walker, M., Wray, G.A., Swalla, B.J., Martindale, M.Q. & Carroll, S.B. 1997. The origin and evolution of animal appendages. Proceedings of the National Academy of Sciences of the United States of America 94: 5162-5166.

Pass, G. 1991. Antennal circulatory organs in Onychophora, Myriapoda and Hexapoda: Functional morphology and evolutionary implications. Zoomorphology 110: 145-164.

Paulden, F. 1898. Peripatus leuckarti. Transactions and Annual Report of the Manchester Microscopical Society [1898] 37-44.

Paulus, H.F. 1979. Eye structure and the monophyly of the Arthropoda. In: Arthropod Phylogeny. A. P. Gupta, ed. Van Nostrand Reinhold Company, New York. 299-383.

Pearce, E.J. 1960. The occurrence of Peripatus on Barbados. Journal of the Barbados Museum and Historical Society 28: 2-3.

Pearse, V., Pearse, J., Buchsbaum, M. & Buchsbaum, R. 1987. Onychophorans - A missing link. In: Living Invertebrates Blackwell Scientific Publishers, Boston, Massachusetts, USA. 449-454.

Peck, S.B. 1975. A review of the New World Onychophora with the description of a new cavernicolous genus and species from Jamaica. Psyche 82: 341-358.

Peck, S.B. 1982. Onychophora. In: Synopsis and Classification of Living Organisms, Volume 2. S. P. Parker, ed. McGraw-Hill Book Company, New York. 729-730.

Peck, S.B. 1990. Eyeless arthropods of the Galapagos Islands, Ecuador: Composition and origin of the cryptozoic fauna of a young, tropical, oceanic archipelago. Biotropica 22: 366-381.

Peck, S.B. 1993. A synopsis of the invertebrate cave fauna of Jamaica. National Speleological Society Bulletin 54: 37-60.

Peck, S.B. 1999. Historical biogeography of Jamaica. Evidence from cave invertebrates. Canadian Journal of Zoology 77: 368-380.

Pennisi, E. & Roush, W. 1997. Developing a new view of evolution. Science 277: 34-37.

Peña-Contreras, Z., Mendoza-Briceño, R.V., Miranda-Contreras, L. & Palacios-Prü, E.L. 2007. Synaptic dimorphism in Onychophoran cephalic ganglia. Revista de Biología Tropical 55: 261-267.

Pereira, J.E., Bicudo, W. & Campiglia, S. 1985. A morphometric study of the tracheal system of Peripatus acacioi Marcus and Marcus (Onychophora). Respiration Physiology 60: 75-82.

Perrier, E. 1893. IV. Classe Onychophores. In: Traite de Zoologie Masson, Paris. 1121-1131.

Peters, S. 1978. Enzymhistochemische Untersuchungen an Peripatopsis moseleyi und Opisthopatus cinctipes (Peripatopsidae). Thesis (Staatsexamensarbeit), Christian-Albrechts-Universität zu Kiel,Germany.

Peters, S., Storch, V. & Ruhberg, H. 1979. Histochemische Untersuchung des Hautmuskelschlauches der Onychophoren Opisthopatus cinctipes und Peripatopsis moseleyi. Zoologische Jahrbücher, Abteilung für Anatomie und Ontogenie der Tiere 101: 122-135.

Peters, W. 1880. Die Variation der Fusszahl bei Peripatus capensis Grube. Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin [1880]: 165-166.

Peters, W. 1880. Über die Arten von Peripatus. Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin [1880]: 28-29.

Peters, W. 1967. Zur Frage des Vorkommens und der Definition peritrophischer Membranen. Zoologischer Anzeiger 30 (Suppl): 142-152.

Peters, W. 1968. Vorkommen, Zusammensetzung und Feinstruktur peritrophischer Membranen im Tierreich. Zeitschrift für Morphologie der Tiere 62: 9-57.

Pflugfelder, O. 1948. Entwicklung von Paraperipatus amboinensis n. sp. Zoologische Jahrbücher, Abteilung für Anatomie und Ontogenie der Tiere 69: 443-492.

Pflugfelder, O. 1955. Die Tracheen der Onychophoren und der Insekten. Mikrokosmos 44: 169-171.

Pflugfelder, O. 1962. Onychophora. In: Lehrbuch der Entwicklungsgeschichte und Entwicklungsphysiologie der Tiere. O. Pflugfelder, ed. Gustav Fischer, Jena. 139-144.

Pflugfelder, O. 1968. Onychophora. In: Grosses Zoologisches Praktikum. G. Czihak, ed. Gustav Fischer, Stuttgart. 1-42.

Pflugfelder, O. 1970. Onychophora. In: Lehrbuch der Entwicklungsgeschichte und Entwicklungsphysiologie der Tiere. O. Pflugfelder, ed. Gustav Fischer, Jena. 165-173.

Pflugfelder, O. 1980. Onychophora. In: Morphogenese der Tiere, 1. Reihe, Lieferung 4:J-I ed. F. Seidel, ed. Gustav Fischer, Jena. 13-76.

Philiptschenko, J. 1906. Ueber die Abstammung des Fettkörpers und der Nephrocyten bei den Arthropoden. Travaux de la Societe Imperiale des Naturalistes de St. Petersburg 37: 270-272.

Picado, C. 1911. Sur un habitat nouveau de Peripatus. Bulletin du Museum National d'Historie Naturelle 17: 415-416.

Picken, L.E.R. 1936. The mechanism of urine formation in invertebrates. I. The excretion mechanism in certain Arthropoda. Journal of Experimental Biology 13: 309-328.

Picker, M.D. & Samways, M.J. 1996. Faunal diversity and endemicity of the Cape Peninsula, South Africa - a first assessment. Biodiversity and Conservation 5: 591-606.

Piechocki, R. 1966. Stummelfüßler (Onychophora). In: Makroskopische Präparationstechnik: Leitfaden für das Sammeln, Präparieren, und Konservieren, Teil II: Wirbellosen Akademische Verlagsgesellschaft, Leipzig, Germany. 136-137.

Pocock, R.I. 1892. Peripatus from St. Vincent. Nature 46: 100.

Pocock, R.I. 1894. Contributions to our knowledge of the arthropod fauna of the West Indies - Part III. Diplopoda and Malacopoda, with a supplement on the Arachnida of the class Pedipalpi. Journal of the Linnean Society. Zoology 24: 473-544.

Podsiadlowski, L., Mayer, G. & Braband, A. 2007. Mitochondrial genomes of Onychophora. Organisms Diversity & Evolution 7: Electr. Suppl.

Podsiadlowski, L., Braband, A. & Mayer, G. 2008. The complete mitochondrial genome of the onychophoran Epiperipatus biolleyi reveals a unique transfer RNA set and provides further support for the Ecdysozoa hypothesis. Molecular Biology and Evolution 25: 42-51.

Poinar, G. 1996. Fossil velvet worms in Baltic and Dominican amber: Onychophoran evolution and biogeography. Science 273: 1370-1371.

Poinar, G. 2000. Fossil onychophorans from Dominican and Baltic amber: Tertiapatus dominicanus n.g., n.sp. (Tertiapatidae n.fam.) and Succinipatopsis balticus n.g., n.sp. (Succinipatopsidae n.fam.) with a proposed classification of the subphylum Onychophora. Invertebrate Biology 119: 104-109.

Pollard, E.C. 1893. Notes on the Peripatus of Dominica. Quarterly Journal of Microscopical Science 35: 285-293.

Pompeckj, J.F. 1927. Ein neues Zeugnis uralten Lebens. Paläontologische Zeitschrift 9: 287-313.

Porter, C.E. 1905. Lecciones de historia natural dictadas a los alumnos del 4. año de la Escuela Naval (curso de 1904): Los Onicóforos. Revista Chilena de Historia Natural 9: 124-128.

Porter, C.E. 1914. Reseña historica de los estudios sobre los Invertebrados chilenos, bibliografia mas importante y estado actual de la seccion correspondiente en el Museo Nacional. Boletin del Museo Nacional de Chile 7: 135-157.

Porter, C.E. 1917. Bibliografía chilena razonada de Miriópodos y Onicóforos. Revista Chilena de Historia Natural 21: 52-62.

Powell, A.W.B. 1987. Peripatus. In: Native Animals of New Zealand Auckland Museum, Auckland, New Zealand. 42-43.

Prenant, A. 1890. Note sur les éléments séminaux d'un Peripatus. Revue Biologique du Nord de la France 2: 169-174.

Preston-Mafham, R. & Preston-Mafham, K. 1993. Onychophora: Velvet worms. In: The Encyclopedia of Land Invertebrate Behaviour MIT Press, Cambridge, Massachusetts. 231.

Pripnow, B. & Ruhberg, H. 2003. Peripatopsidae (Onychophora) from New Zealand - observations on selected morphs of the 'Peripatoides novaezealandiae-complex' in culture: morphological aspects. African Invertebrates 44: 103-114.

Purcell, W.F. 1897. Notes on Onychophora. Transactions of the South African Philosophical Society 9: xviii-xix.

Purcell, W.F. 1899. On the South African species of Peripatidae in the collection of the South African Museum. Annals of the South African Museum 1: 331-351.

Purcell, W.F. 1900. On the anatomy of Opisthopatus cinctipes Purc., with notes on other, principally South African, Onychophora. Annals of the South African Museum 2: 67-116.

Purcell, W.F. 1905. Section III - Zoological. 3. Notes on South African land and fresh-water invertebrates, exclusive of molluscs and insects. In: Science in South Africa. W. Flint, ed. T. Maskew Miller, Cape Town, South Africa. 175-181.

Purcell, W.F. 1906. On some earlier stages in the development of Peripatus balfouri. Report 75th Meeting. British Association Adv. Sci. 438-439.