CONTENTS. XI 

 Tunicata. 



PAGE 



Herwerden, M. a. van— Influence of Spermatozoa of Tunicate on Ova of Sea-urchin 304 



Saint-Hilaire, C. — riacenta of Salpa iJeiaocraticn-inucronata It'JS 



Huntsman, A. G. — Commensals of Canadian. Ascidians 519 



DoBEK, Geuhard— Nervous System of Salps , G06 



JuLiN, Ch. — Luminous Cells of Pymsoma and Salps ,. .. 607 



INVERTEBRATA. 



Mollusca. 

 a. Cephalopoda. 



Chun, Carl — Spirtda austral is 38 



Berry, S. S. — Californian Cephalopods 38 



Hellig, R. — Nervous System of Sepia 607 



y. Gastropoda. 



Schumann, "\V. — Structure and Affinities of Gadinia 39 



Haeckel, Werner — Structure of Chilina 39 



Yung, Emile — SnaiVs In difference to Light 39 



„ „ Snail's Horns .. 39 



Ckossland, Cyril — Warning Coloration in Chromodoris 177 



P^LioT, Charles — Red Sea Chromodorids 177 



Krasucki, A. — Structure of Pterotiachea mutica 178 



liosEN, Nils — Parasitic Gasteropodg 178 



I)AKiii,W. J.— Memoir on Whelk 398 



Orton, J. H. — Feeding in Slipper- Limpet 519 



Lee, Arthur Bolles — Spermatogenesis of Snail 520 



Jauesots.H. hYSTER— Structure and Origin of Pearls 520 



5. Lamellibranchiata. 



Scheresghewsky, Helene — Brood-pouches of Cyclas cornea 39 



Wasserloos, E. — Development of Gills in Cyclas and other Fresh-water Bivalves .. 178 



Crossland, Cyril — Marginal Processes of Lamellibranch Shells 179 



Griffin, L. E. — Minute Structure of Pullial Tentacles of Lima 304 



Rubbell, A. — Shell-structure and Pearl-mahing 305 



Odhxer. Nils — Nephridia of Lamellibranchs 3!t9 



Gutheil, Fritz — Minute Structure of Aliiacntary System of Fresh-water Mussel .. .■>99 



Kostanecki, K. — Peculiar Degeneration of Germinal Vesicle in Mactra 399 



Dantan, J. L. — Gonads of Oysters 607 



Arthropoda. 



Faussek, V. — Comparative Embryological Studies on Insects and Spiders . . . . 40 



a. Insecta. 



Krausi:-Heldrungen, A. II. — Habits of Aphmnogaster sardoa Mayr ., .. .. 40 



Pietschker, H. — Brain of the Ant 40 



Zander, Enoch — Structure of Bee 40 



Janet, (^'harles — Sense-organs of Bee 40 



(iuoscHEL, E. — Organs of Flight in Hornet 41 



Handlirsch, Anton— FosstV. Wasps' Nests 41 



JoHNAS, W. — Eyes of Butterflies 41 



VOGEL, R. — Innervation and Sense-organs of the Wing in Lepidoptera 41 



