388 OPHIDIANS. 
ELEVENTH GENUS—DRYIOPHID A. 
Whip Snakes. 
Body generally exceedingly slender; head very long, with tapering 
snout; pupil linear, horizontal; last maxillary tooth grooved. 
East India varieties are as follows, viz.: 
No. 1. Dry. tropidococeyx. 1 variety. 
2. Dry. tragops. 3 varieties. 
3. Dry. passerita. 25 
4. Is a South American variety, called Culebra Be- 
juco; a very great number of these snakes are 
found on the plains of Casandre and San Mar- 
tin. 
5. Dry. acuminata, Golden Tree Snake, is a Mexi- 
can variety. 
6. Dry. herpetodryas flagelliformis (nobis), Coach- 
whip Snake, is a harmless North American 
species. 
7. Dry. philodryas viridissimus, Emerald Whip 
Snake, is from Brazil, a harmless variety, and 
of a beautiful color. 
Making in all 7 species, composed of 10 varieties. 
TWELFTH GENUS—DIPSADID A. 
Nocturnal Tree Snakes; with «a vertical pupil; body and base of tail 
much compressed, head subtriangular, broad behind, very distinct from 
neck, with skort snout; loreal region flat. 
East. India species are: 
No. 1. Dips. cynodon. 1 variety. 
2. “ — forsteni. 1 # 
3. “ — boops. 
4. “ — dendrophila. 
5. “ — bubalina. 
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