CONTENTS. XV11 



Annulata. page 



Perez, Ch. — Guticular Warts of Pilargis verrucosa 47 



Elwes. E. V. — Littoral Polyckseta of Torqua y 48 



Hurwitz, S. H. — Reaction* of Earthworms to Acids 48 



Michaelsen, W. — Caucasian Earthworms 48 



Martiis, Luigi Cognetti de — Internal Fertilization in Pareudrihts 202 



Honig, Josef — Neurochords of Criodrilus 202 



Staff, Franz — Development of Criodrilus lacuum .. 202 



Ashworth, J. H. — Studies on Arenicolidse 202 



„ „ Arenicola loveni 203 



Michel, Aug. — Precision of Regeneration in Polynoids 203 



Hacklov, L. — Sensilli and Eyes of Medicinal Leech .. .. '.. 203 



Ritter-Zahony, Rudolf von — Chxtognatha from Ireland 203 



„ „ West Indian Chxtognatha 204 



( oventry, A. F. — Theory of Dwarf Males in Myzostoma 204 



Southern, R. — Pelagic Polychxts of Irish Seas 360 



McIntosh, W. O. — Notes on Polychxts 360 



Dershawin, A. — Polychxt from the Delta of the Volga 360 



Shearer. Oreswell — Development of Trochophore of Hydroides 360 



Sollas, Igerna B.J. — Parasitic Castration of Earthworms 360 



Johannson, L. — Extra-enteric Aperture in a Leech 361 



Stephenson, J. — Oligochset Commensals in Spongilla carteri 469 



„ Bothrion iris 469 



Harding, W. A. — New Leech from Egypt 470 



Scriban, J. A. — Adipose Cells of Pont obtlella muricat a, 624 



Buchanan, Gwynneth, & others — Studies on Australian Earthworms .. .. 624 



Bialkowska, Wanda, & /ofia Kulikowska — Nerve-cells of Leech and Earthworms 624 



Heinen, Adolph — Nephthyidm and Lycoridm of the North Sea and the Baltic . . 624 



Mesnil, F., & M. Caullery — Papillomatous Neo-formati n in an Annelid .. .. 625 



Sokolow, Iwan — New Species of Ctenodrilus Q25 



Friend, Hilderic, The Rev. — New British Enchytrseids 730 



Nanni, Jakob — Structure of Tomopter is 758 



Gravier, Ch. — Incubation in Polychxts 758 



Arwidsson, Ivar — Irish Maldanidx 75S 



Stephenson, J. — Littoral Oligochxta of the Clyde 75S 



Nematohelminthes, 



Sweet, Georgina — New Nematode in Eye of Queensland Fowl 48 



Gilruth, J. A., & others — -Microfilaria in Magpies 48 



Buchanan. Gwynneth — Supposed Nematode in Circular Muscle of an Earthworm 4^ 



Edwards. C. L. — Idiochromosomes in Ascaris 204 



Glaue, H. — Comparison of Ascaris felis and A. cam's 2'>5 



Hellemans, J. — Strongylus pinguicola 205 



Emile-Weil, E., & (t. BiYE— Anti-coagulant Action of Nematode Extract .. .. 2'»."> 



Uailliet, A., & A. Henry— .48eane78 of Carnivores :-;<;i 



Man, J. G. de — Anguilhdidx of the White Slime of Oaks 361 



Mathis, C, & M. I.eger — Microfilariae in Tonkin Birds 361 



Manuel H. — Iilood-filaria in Horse 47u 



LJaillikt, G. — Oxynris in the Appendix vernei for, u is 17) 



Goldschmidt, li. — Nervous System of Ascaris 47:1 



Boveki, Th. — Potency of Blastomeres in Ascaris 02.") 



Berks — Microfilaria from a Fowl 625 



Komieu, Maro — Plasmic Reduction in Spermatogenesis of Ascaris megalocephala .. 625 



( 1. eland, J. B., & T. H. Johnston — Worm-nests in Australian Cattle 626 



Rla.no, It., & L. Cauchemez — New Species of Echinorhynchus 626 



Hegt, Noordhoeck J. — New Nematode 759 



Hida. S. — Structure of Filar ia bancrofti .. .. 759 



Girgolaff, S. S. — Compression Experiments with the Fertilized Ovum of Ascaris 



megalocephala 759 



Meves. Fk. — Role of Plastcchondria in Fertilization of Ascai is megalocephala . . 759 



Brumpt, E. — Nematodes in Deer 760 



Dec. 20th, 1911 b 



