2 
Development = 2215 : — 
General 
Oogenesis and Ovum 
Spermatogenesis and Spermatozoon 
Embryology 
Parthenogenesis ... ... 
Regeneration ... ... ... 
Shell ... 
PAGE 
V23 
Ethology = 2219 ; — 
General 
Movements, Locomotion ... 
Enemies, Defence and Protection 
Feeding Habits 
Breeding Habits 
Boring Habits 
Coloration 
Habitat 
Acclimatisation, etc.” 
Hibernation and Jilstivation 
Parasitism, Commensalism, Parasites, et 
Evolution ... • 
Economics 
23 
Variation and ^Etiology = 2223 ; — 
General Treatises ... 
Teratology, Phylogeny and Relationship 
Evolution 
Variation in Form... 
Distribution = 2227 : — 
General ... ... ... ... ... ... ... 24 
(a) Recent: — 
(a) Marine 
Arctic Ocean ... ... ..^ 
North Atlantic Ocean, Caribbean Sea and 
Gulf of Mexico 
Mediterranean Sea, Black Sea 
South Atlantic Ocean }>24 
Indian Ocean, Red Sea 
Malaysia 
Pacilic Ocean 
Southern Ocean 
