2 
PAGE 
Development = 2215 ; — 
General 
. , 
. . 
39 
Oogenesis and Ovum 
. . 
. . 
39 
Spermatogenesis and Spermatozoon 
, . 
. . 
39 
Embryology 
39 
Ethology = 2219 : — 
General 
39 
Movements, Locomotion . . 
40 
Feeding Habits 
40 
Breeding Habits . . 
40 
Luminosity . . 
40 
Habitat 
40 
Boring Habits 
40 
Acclimatisation, etc. 
40 
Parasitism, Commensalism, Parasites, etc. 
40 
Enemies, etc. 
41 
Economics . . 
41 
Variation and ^Etiology = 2223 : — 
General Treatises . . 
42 
Teratology, Phytogeny and Relationship 
* * , 
42 
Distribution = 2227 : — 
General 
42 
(a) Recent: — 
(a) Marine — 
Arctic Ocean . . 
North Atlantic Ocean, Caribbean 
Sea and 
43 
Gulf of Mexico 
43 
Mediterranean Sea, Black Sea 
43 
South Atlantic Ocean. . 
44 
Indian Ocean, Red Sea 
44 
Malaysia 
45 
Pacific Ocean . . 
45 
Southern Ocean 
46 
Antarctic Ocean 
46 
(/ 3 ) Non-Marine : — 
Sweden and Denmark == 2227 da 
46 
Russia = 2227 db 
47 
Southern Russia = 2227 dbb 
47 
Germany = 2227 do . . 
47 
Holland = 2227 dd . . 
47 
British Islands = 2227 de . . 
47 
France = 2227 df . . 
48 
Spain = 2227 dg. . 
48 
Italy and Sicily = 2227 dh . . 
48 
Switzerland = 2227 di 
49 
Austria-Hungary = 2227 dk . . 
49 
