xviii CONTENTS. 



PAGE 



Schwartz, M. — Natural History of Tomopteridse 1 75 



Issakowttsch, Alexander — Determination of Sex in Daphnids 176 



Holms, S. J. — Alaskan Amphipods 176 



Cole, Leon J. — Pycnogonids of the West Coast of North America 176 



Nusbaum, J. — Begeneration in Polychxts 176 



Bullot, G. — Artificial Parthenogenesis in an Annelid 176 



Wagner, F. von — Regeneration in Lumbrieulus variegatus 176 



Piguet, Emile — Bythonomus lemani Grube 177 



Salensky, W. — (Esophageal Pouches in Polygordius and Saccocirrus 309 



Gratier, Ch. — Bed Sea Polychxts 309 



Watson, Arnold T. — Peculiar Regenerative Process in Potamilla 309 



Gravier, Ch. — Mistaken Case of Budding in Polychxts 310 



Moore, J. Percy — Alaskan Polychxts 310 



Vejdovsky, F. — Nephridia of Aeolosoma and Mesenchytrxus 310 



Smith, F. — Relationships in Oligochxta 310 



Issel, R. — Italian Oligochxta 310 



Enriques, P. — Blood Vessels of Sipunculus nudus 310 



Borquin, Jules — Abnormality in Genital Organs of Leech 311 



Spiess, C. — Digestion in the Leech 311 



A brio, Paul — Systematic Relations of Chxtognatha 311 



Nelson, Jas. A. — Sexual Beproduction in JElosoma 443 



Wagner, F. von — Ethology of Tubifex and Lumbrieulus 443 



Augener, H. — West Indian Polychxts 443 



Lefevre, George — Artificial Parthenogenesis in Thalassemia 443 



Izuka, Akira— Collateral Budding in a Syllid . 553 



Lillie, R. S. — Nephridia of Arenicola 553 



Sorby, H. C. — Heteronereis of Thames Estuary 5->3 



Bohn, G. — Bionomics of Annelids 670 



Gerould, J. H. — Embryology and Affinities of Sipunculidx 670 



Salenskt, W. — Larva of Echiurus 670 



Duncker, H. — Cirrus and Elytron in Aphroditidsat 671 



Martiis, L. Cognetti de — Neio Species of Oligochxte 671 



Nematohelminth.es. 



Soheben, L. — Spermatozoa of Ascaris megalocephala .. 29 



Pieri, Gino — Cutaneous Infection with Ankylostomum 29 



Staibli, C. — Migration of Trichina Embryos 29 



Ziemann, H. — Death from Infection with Ascaris 177 



Marcus, Harry — Rachis Nucleus in Ascaris 177 



Corti, E. — Family Mermithidx 311 



Pieri, Gino — Notes on Anchylostomum 312 



Taniguchi, N. — Biology of Filaria bancrofti, Cobbold 312 



Mayer, Alfred — Rachis in Ovaries and Testes of Nematodes 444 



Stuksberg — Anguillula Intestinalis 444 



Linstow, vov — Ascaris halicoris 444 



Porta, A. — Cetacean Echinorhynchi 444 



Struckmann, C. — Embryology of Strongylus filaria 444 



Griggs, R. F. — Beducing-div is ion in Ascaris 553 



Stewart, F. H. — Anatomy of Nematodes .. ., 554- 



Jammes, L., & A. Martin — Conditions of Development in Ascaris vitulorum .. .. 671 ■ 



Marcus, H. Maturation in Ascaris cam's 671 



Schoppler, H. — Oxyuris in Vermiform Appendix 671 



Smidt, H. — Species of Strongylus in Gibbon 672. 



Raither, Max — Structure of Mermis albicans v Sieb 6 2 



Linstow, O. von — New Nematodes and other Parasites 672 



Fuhrmann, O. — Txnix of Birds of Prey 672 



Platyh.elminth.es. 



Plehn, M.— Parasitic Turbellaria 29 



Voigt, Walter — Migrations of Planarians in Mountain Streams 30 



