XVlii CONTENTS. 



PAGE 



Moore, J. Percy — Neto Species of Sea-Mouse 438 



Lignau, N. — Regeneration in Protodrilus 438 



Lefevre, George — Artificial Parthenogenesis in Tlialassema mellita 439 



Gravier, Ch. — Sexual Forms in Fresh-icater Nereids .. 439 



KoLMBR, W. — Crystals in Hirudo and Pontobdella 439 



Michaelsex, W. — 01 igochaeta of Lake Baikal 594 



Soulier, Albert — Annelids of Cette 594 



Malaquin, A. — Phenomena of Asexual Reproduction in Salmacina and Filigrana 594 



Hekubel, Marcel A. — Integumentary Structures of Sipunculids 595 



Skorikow, A. — New Species of Echiurus 595 



Arnesen, Emily — Blood-vessels of Rhijnchobdellids 595 



Perez, Ch., & E. Gendre — Oogenesis of BrancheMion 595 



Enders, H. E. — Commensals in Tubes of Chsetopterus 699 



Gemellt, Agostino — Neurofibrils in Ganglion Cells of Annelids 699 



Krawany, J. — Central Nervous System of Annelids 700 



Lddwig, H. — Gail-forming Annelid on Ophiuroid 700 



F 'age, Louis— Modifications of Segmental Organs in Epitokous Polychaets .. .. Tod 



Mingazzini, P. — Pelagic Sipunculid 700 



Freudweiller, H. — Vascular System of Oligochaeta 700 



Holmgren, E. — Epithelial and Connective Tissue Cells in Hirudo 701 



Nematohelminth.es. 



Conte, A., & A. Bonnet — New Nematode from Helix 57 



Linstow, Von — Descriptions of Nemotodes and Cestodes 57 



Mauval, L. de — Acanthocephala of Birds 185 



Schneider, P. — Oxyuris Vermicularis in Peritoneal Cavity 185 



Loeb, L., & A. J. Smith — Blood-Coagulating Substance in Anchylostoma .. 185 



Jammes, L., & H. Mandoul — Alleged Toxic Action of Intestinal Parasites .. .. 186 



Linstow, Von — Notes on Nemotodes 186 



Leidy, J., jun. — Researches in Helminthology and Parasitology 186 ■ 



Linstow, O. von — New Helminths from West Africa 186 



Cobb, N. A. — Freshwater Nematodes of New Zealand 316 



Man, J. G. de — New Free-living Nematode from Patagonia 316 



Gemmill, James F. — Iehthyonema grayi 316 



Jagerskiold, L. A. — New Genus of Terrestrial Nematode 440 



Shipley, A. E. — Notes on Nematodes ,. 440 



Rauther, Max — Structure and Relationships of Gordiidas 595 



Marval, L. de — Monograph on Acanthocephala of Birds 596 



Tretjakoff, D. — Chromosomes of Ascaris 701 



Domaschko, Adalbert — Gonad Walls in Ascaris megalocephala 701 



Linstow, O. v. — New Species of Strongyloides 702 



Platyhelmiuthes. 



Kowalewski, M. — New Cestode Genus 57 



Engler, Kurt — Abnormal Alimentary System in Opisthorchis felineus 57 



Johnston, S. J. — Australian Entozoa 57 



Pratt, Henry S. — New Distomes 58 



Lichtenheld, G. — Echinococci of Domestic Animals 1S6 



Patz, S. von — Dibothriocephalus latus in Dogs 187 



Child, CM. — Amitosis in Cestoda 187 



Bourquin, J. — Cestodes of Mammals 187 



Rosseter, T. B. — Gonads of Taenia sinuosa . . - 187 



Fuhrmann, O. — Neiv Trematodes 187 



Stoipenbrink, F. — Degeneration of Gonads in Starved Planarians 187 



Sablssow, H. — Nervous System of Tricladidas from Baikal 188 



Wilhelmi, J. — Excretory System of Fresh-water Triclads 188 



Sekera, E. — Viviparity in the Eumesottominae 188 



