VETOMOUS SERPENTS. 
180 
21 rows of lanceolate, carinated scales. S. 164 + 64. 
From India, and also from the Isles of Sumatra, Celebes, 
and Timor. 
8. Trigonocephalus puniceus. — Very distinguishable 
by its eye protected above by a row of small scales, rising 
to a point. Head very broad, heart-shaped, and flat on 
the summit ; muzzle angular and excavated at the sides, tip 
rounded and obliquely truncated. S. 162+54. Hed- 
dish-brown, dashed and varied with yellow, with purple, 
or with grey ; tail very dark. Country, the Island of 
Java. 
B. Species which have plates on the top of the head.— 
9. Trigonocephalus Bhodostoma.— A very beautiful 
species. Form very vigorous ; head heart-shaped, fur- 
nished on the summit with 9 plates more than usually de- 
veloped ; a very conical muzzle, with a moveable prominent 
tip ; scales smooth, lozenge-shaped, and largest on the 
middle line of the back, which is keeled ; tail short and 
pointed. S. 147 + 55. Beddish brown, more bright on 
the back, the sides of which are ornamented with broad, 
dark, triangular spots ; summit of the head bordered with 
a wide reddish ray ; a black streak behind the eye. Inha- 
bits Java. 
10. Trigonocephalus Hypnale. — ^From Ceylon and 
the Philippines. Size small ; muzzle prolonged into a sa- 
lient tumed-up tip ; above covered with scales, to which 
succeed the vertical, the superciliary, and the occipital 
plates; 19 rows of carinated scales. S. 142 + 40. Co- 
lours of the body nearly as in the last. 
1 1 . Trigonocephalus Halts. — F orm more slender than 
usual ; head elongated, covered with 9 plates, of which the 
anterior frontals are very compact ; muzzle short and 
rounded ; 27 rows of lanceolate, carinated scales. S. 165 
+ 37. Above yellowish grey, with 5 rows of brownish 
spots. Observed in Tartary. 
12. Trigonocehalus Blomhoffii. — ^Plates on the head 
nearly as in the last, but the form of the animal is more 
clumsy, and the head larger ; 25 rows of strongly cari- 
nated scales. S. 139 + 51. Above olive-brown, with two 
