CONTENTS. IX 



PAGE 



Origin of the Individuality of Higher Animals Part 6 825 



Occurrence of Chlorophyll in Anivials „ 826 



Klein's Elements of Histology „ 827 



B. — Intektebrata. 



Anastomoses of the Striated Muscular Fibres of Invertebrates. Part 1 35 



Apparently New Animal Type {Trie hoplax adhcerens) .. Part 3 350 



Chlorophyll of Animals u 351 



Division of Lower Invertebrates » 352 



Structure of the Nucleus Part 4 494 



Radial and Bilateral Symmetry in Animals Part 5 633 



Symbiosis of Bryozoa and Actinim „ 635 



Colouring Matters of Bile Part 6 827 



MoUusca. 



Digestion in Cephalopoda Part 1 36 



Development of Bithynia tentaculata „ 36 



Organization of Adriatic Chitons „ 38 



Generative Organs of Oysters „ 41 



Development of Reproductive Organs of Pulmonate MoUusca Part 2 192 



Developmental History of the Prosobranchiata „ 192 



Norwegian Buccinidce m 1""5 



Sinisigera » ^"^ 



Green Colour of Oysters » 194 



Sucker on the Fin of the Heteropods not a Sexual Cha- 

 racteristic •• »j ■'■"* 



Growth of the Molluscan Shell ,, 195 



Chromatophores of Cephalopoda Part 3 352 



Deep- Sea Solenoconcha „ 353 



Vascular System of NaiadcB and My tilidm „ 353 



Generative Organs of the Oyster „ 354 



Chromatophores of Cephalopoda Part 4 494 



Development of Chromatophores of Sepiola „ 494 



Organization of Chitons )> 495 



Characters of Marionia » 496 



Digestive Processes in Cephalopoda Part 5 636 



Suckers of Cephalopods • » 636 



Development of Gastropoda »> 637 



Liver of Gastropoda » 637 



Sensory Organs of Gastropoda , 638 



Pedal Nerves of Haliotis „ 638 



Pedal Glands of MoUusca , 639 



Glands of Aplysia and allied Forms „ 640 



Sexual Characters of Oysters „ 640 



Anatomy of the Marine Rhipidoglossa Part 6 828 



Differences between the Males and Females of the Pearly 



Nautilus )> 830 



Existence of a Shell in Notarchus „ 830 



MoUuscoida. 



Early Development of Salpidce Part 1 41 



Compound Ascidians of the Bay of Naples , 42 



New Division of Cheilostomatous Polyzoa „ 43 



