AMBLTCEPHALirS. 415 



broad suoiit ; eye moderate aud with vertically elliptical pupil ; 

 head-shields large. Body moderate or slender, compressed ; scales 

 smooth or feebly keeled, in 15 rows, without pits ; ventrals 

 rounded; tail moderate or short, prehensile; subcaudals in two 

 rows. 



DistrUmtlon. This genus includes eight species, inhabiting South- 

 ern China, Burma, the Eastern Himalayas, Assam, Cochinchina, 

 Siam, the Malay Peninsula, and the Malay Archipelago. They are 

 nocturnal and feed on insects. 



Synoims of Indian <ind Burmese iSpccies. 



A. Scales of vertebral row enlarged; a single 



shield between nasal and eye, which rests on 

 one or more labials. 



a. Frontal longer than broad ; ventrals 188- 



191 ; subcaudals 70-87 A. moiiticola, p. 115. 



b. Frontal as broad as long ; ventrals 150-170 ; 



subcaudals 31-46 A. kcvis, p. 415. 



B. Scales of vertebral row not enlarged; loreal 



and ])ra)ocular distinct ; eye separated from 

 labials by one or more suboculars. 



a. One prreocular, one postocular, and one sub- 



ocular A. andersonii, ]). 416. 



b. Two praeoculars, one postocular, and. one sub- 



ocular A. 7nodcstii.s, p, 110. 



c. One prteocular, one postocular, and 3 or more 



suboculars A. tnacularius, p. 416. 



oil. Amblyceplialus inonticola. 



Dipsas monticola, Cantor, P. Z. S. 1839, p. 53. 



Pareas monticola, Giinth. liept. B. I. p. 327; Anders. P. Z. S. 1871, 

 p. 188 ; Tlieob. Cat. p. 203. 



Internasals not quite half as long as the prefrontals ; latter 

 entering the eye ; frontal a little longer than broad, a little shorter 

 than the parielals ; loreal entering the eye ; a small pra^ocular 

 below the loreal ; two postoculars : temporals 2 -|- 3 ; upper labials 

 7, fourth or foin-th and fifth entering the eye ; three pairs of large 

 chin-shields. Scales in 15 rows, smooth; vertebrals enlarged, hex- 

 agonal. Ventrals 188-194 ; anal entire ; subcaudals 70-87. 

 Brown above, with vertical blackish bars on the sides ; a black line 

 from above the eye to the nape, and another from behind the eye 

 to the angle of the mouth ; yellowish below, dotted with brown. 



Total length 2 feet ; tail 5| inches. 



Hab. Eastern Himalayas, Khasi and Naga Hills. 



515. Amblycephalus Isevis. 



Amblycephalus laevis, £oie, Isis, 1827, p. 520. 



Pareas Isevis, Diwi. ^- Bibr. Erp. Gen. vii, p. 442 ; Giinth. Ilejjt. 



B. I. p. 328 ; Tkeob. Cat. p. 203. 

 Leptoguathus lievis, Jan, Icon. Ophid. 37, pi. vi, tig. 4. 



