SNAKES. Bf 
Schlegel (Phys. Serp. 502) regards it as the adult of &. Valakadyn ; 
but the form and size of the head is opposed to that theory, and it 
most probably belongs to this genus. 
8. KeERILIA. 
Head moderate, rather small, rather narrow and shelving in 
front: neck moderate: nasal shield short, broad, truncated in front: 
frontal shields small, triangular: rostral shield broad, five-sided : 
upper labial shields all large; the first square, smallest; sixth 
largest ; third and fourth under the eye : lower rostral moderate, tri- 
angular: first, second and third lower labial shields rather large; 
first highest; the fourth and fifth rather smaller, lower: chin scales 
one pair: scales very large, broad, six-sided, keeled, in 24 or 26 lon- 
gitudinal series : ventral shields six-sided, two-keeled; anterior ones 
nearly smooth; all rather convex, with the sides folded together, 
forming a rather blunt ventral keel: eyes rather large; pupil round. 
1. The Keritia. Kerilia Jerdonii. 
White in spirits: back grayish, with (about 46) irregular broad 
black rings: face in front of eyes black: end of nose and chin gray: 
head shields smooth, polished : scales large, broad, six-sided, keeled : 
keel dark brown, horny, rather tubercular at the end; scales of the 
neck shorter and subcentral, with a tubercle. 
a. In spirits. Adult? Madras. Presented by J. C. Jerdon, Esq. 
Doubtful species. 
1. Leioselasma striata, Lacep. Ann. Mus. iv. 198, 200, t. 57, 
f.1. Enhydris striatus, Merrem, Tent. 146. 
2. Disteria doliata, Lacen. Ann. Mus. iv. 210. 
3. Tatta pam, Russell, Ind. Serp. ii. t.44. Anguis mamillaris, 
Daud. Rept. vii. 546. Typhlops mammilaris, Merrem, Tent. 158. 
Hydrophis gracilis, part, Schlegel, Phys. Serp. 508. 
