418 Dr. A. Giinther on new Species of Snakes 
Body brownish olive;. upper side of the head and neck 
black, with symmetrical yellow markings arranged along the 
margin of the head; a pair of yellow dots on the occipitals ; 
a series of black dots along the vertebral line; a well tetiaed 
deep-black streak runs along each side of the body along the 
meeting edges of the fourth and fifth outer series of scales; it 
extends to the extremity of the tail. Lower parts uniform 
whitish. | 
A single specimen, 103 inches long, was obtained by Mr. 
Theobald in Pegu; tail 3 inches long. 
Cyclophis nebulosus. Pl. XIX. figs. C. 
Body slightly compressed ; tail rather short; head of mo- 
derate length, distinct from neck. Eye of moderate size; 
loreal elongate; one preocular, scarcely reaching to the upper 
surface of the head; two postoculars; eight upper labials, the 
fourth and fifth entering the orbit, the sixth small, much 
smaller than the fifth; temporals elongate, 1+2; anterior 
chin-shields longer than posterior, in contact with four labials. 
Scales in fifteen rows, short, rounded, without apical groove; 
ventrals 174; anal bifid; subcaudals 77. | 
Greenish olive. Anterior part of trunk with four or six 
series of obscure nebulous spots, which are confluent into lon- 
gitudinal bands on the posterior part of the trunk. Head im- 
maculate ; lower side uniform whitish. 
A single example was obtained by Mr. Whitely at Naga- 
saki. Total length 94 inches, length of head 5 lines, of tail 
2 inches. 
Enicognathus annulatus (D. & B.). 
Varies in the number of the black cross bands, which are 
irregular in shape; ventral shields 140-156. An example 
from Vera Paz is considerably more slender than others from 
the city of Mexico. It appears to be rare. 
Dromicus viperinus. 
Scales in seventeen rows. Ventral shields 160-161; anal 
bifid; subcaudals sixty. Upper labials eight, the third, fourth, 
and fifth entering the orbit ; loreal higher than long ; one pre-, 
two postoculars; temporals 1+2+3. The posterior maxil- 
lary tooth is the longest, and separated from the preceding b 
an interspace. Upper parts blackish grey, this colour extend- 
ing, without interruption, over the sides to the edge of the 
ventral shields. Neck with a darker collar, from which a dark 
zigzag band proceeds along the median line of the back; it 
becomes indistinct on the posterior part of the trunk, and re- 
