ZOO-GEOGRAPHICAL DIVISIONS. 
25 
3. Central India, West. —An area of greater rainfall, a more definite 
period of humidity and less alternation of day and night temperature. 
4. Gangetic Plain, West. —Well marked winter with moderate cold 
and rain, dry hot weather and moist rainy weather. Immigrants from 
the Himalayas for the cold weather. 
5. Gangetic Plain, East. —No well-marked dry hot weather, the 
humidity higher in the cold weather and hot weather. Immigrants from 
the Himalayas and other hills for the cold weather and insect activity 
more general in the hot weather ; there is a marked Malayan element. 
(A feature of this area is the flooding that occurs over large stretches of 
land; the influence this exerts on the fauna may be a very marked one.) 
6. Sundarbans. — Doubtfully distinct. Little alternation of 
temperature or humidity. Peculiar flora. Strong Malayan element. 
7. Central India, East. —Well-marked dry hot weather when insect 
activity is suspended, followed by a prolonged moist warm period. Fewer 
insects hibernate than in the regions North and West. 
8. Deccan. —Well-marked seasons, the dry hot weather following 
a marked cold weather, when hibernation sets in. 
9. West Coast. —The fauna is influenced by the neighbouring sub¬ 
tropical region of permanent forests and high humidity which produce 
a very large fauna equalled only by the lower slopes of the hills in Assam 
and the Eastern Himalayas. No hibernation in the plains below ghauts. 
Many Ceylonese forms. 
10. Coromandel Coast. —Less well marked seasons to the Deccan, 
and a smaller flora to the West Coast. A large proportion of Ceylonese 
forms. 
We may roughly indicate the separate faunal zones into which we 
would divide British India as a whole exclusive of Burmah and Ceylon:— 
1. Indus Plain. —Tropical. 
2. Himalaya, West.— Western Himalayas above 6,000 feet, inclu¬ 
ding Kashmir, Nepal and Kumaon. Holarctic. 
3. Sub-Himalaya, West. —-Lower slopes of Western Himalayas 
2,000 to 6,000 feet. Subtropical forest fauna. 
4. Desert India. —Tropical. 
5. Central India, West. —-Tropical. 
