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Development = 2215 : — 
General 
Oogenesis and Ovum 
Spermatogenesis and Spermatozoon 
Embryology 
Post-Embryonic Ontogeny 
Ethology = 2219 : — 
General 
Movements, Locomotion . . . < 
Feeding Habits 
Breeding Habits . . 
Organogeny 
Embryology 
Luminosity . . 
Habitat 
Boring Habits 
Acclimatisation, etc. 
Hibernation and ^Estivation 
Parasitism, Commensalism, Parasites, etc 
Enemies, etc. 
Economics 
Variation and ^Etiology = 2228 : — 
General Treatises 
Teratology, Phylogeny and Relationship 
Distribution = 2227 : — 
General . . . . . . . . . . . . . . 45 
(a) Recent: — 
(«) Marine: — 
Arctic Ocean . . . . . . . . . 45 
North Atlantic Ocean, Caribbean Sea and 
Gulf of Mexico . . . . . . 45 
Mediterranean Sea, Black Sea . . . . 46 
South Atlantic Ocean. . . . . . 46 
Indian Ocean, Red Sea . . . . . . 47 
Malaysia . . . . . . . . 47 
Pacific Ocean . . . . . . . . . . 47 
Antarctic Ocean . . . . . . . . 49 
(/3) Non-Marine : — 
Sweden and Denmark = 2227 da . . . 49 
Russia = 2227 db . . . . . . 49 
Southern Russia = 2227 dbb . . . . 49 
Germany = 2227 do . . . . . . . . 49 
Belgium = 2227 dd . . . . . . . . 49 
British Islands = 2227 de . . . . 50 
France = 2227 df . . . . . . . . 50 
Switzerland = 2227 di . . . , . . 51 
41 
41 
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41 
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