10. TKOriDONOITJS. 263 



71 . Tropidonotus flavifrons, 



Tropidonotus flavifrons, Boulem;. Ann. ^ Maq. N. II. (5) xx. 1887, 

 p. 96 ; Mocquard, Noun. Arch. Mas. (3) i'i. 1890, p. 140, pi. ix. 

 tig. 2. 



Head short, very distiuct from neck. Eye moderate. Internasals 

 broadly truncated in front, about half as large as the prsefrontals ; 

 frontal once and a half as long as broad, longer than its distanoe from 

 the end of the snout, shorter than parietals ; loreal as deep as long ; 

 one prfe- and two or three postooulars ; temporals 2 + 3 ; eight or 

 nine upper labials, fourth and fifth or fifth and sixth entering the eye. 

 Scales in 19 rows, feebly keeled, of outer row smooth. Ventrals 

 140-155 ; anal entire ; subcaudals 95-99. Olive above, with dark 

 network ; two parallel ^r alternating series of white spots along 

 each side, upper on the sixth scale from the ventral, lower larger 

 and on the outer border of the ventral ; a large yellow spot covers 

 the forehead and snout ; sutures between the labials black ; ventrals 

 whitish, with largo black spots; the black predominates on the 

 subcaudals. 



Total length 540 millim. ; tail 179. 



Mt. Kina Baloo, North Borneo. 



a. cJ (V. 148 ; 0. 95). Kina Baloo. Mr. Whitehead [0 ]. ' 



Paris Museum [E.]. 



72. Tropidonotus callistus. 



Tropidonotus callistus, Gilnth. Proc. Zool. Sor. ISTu, p. 170, 

 pi. xvii. fig. C ; Peters %■ Doria, Ann. Mus. Geneva, xiii. 1878, 

 p. 388. 



Head short and thick, very distinct from necK. Eye large. 

 Eostral broader than deep, scarcely visible from above ; internasals 

 longer than broad, broadly truncate in front, longer than the 

 prefrontals ; frontal once and two thirds as long as broad, longer 

 than its distance from the end of the snout, a little shorter than 

 the parietals; loreal deeper than long; one prse- and four post- 

 ooulars; temporals 2 + 2; nine upper labials, fourth, fifth, and 

 sixth entering the eye ; five or six lower labials in contact with the 

 anterior chin-shields, which are shorter than the posterior. Hcales 

 in 21 rows, strongly keeled, of outer row feebly keeled. Tentrals 

 156 ; anal divided ; subcaudals 76. Black above, with a whitish 

 vertebral stripe with scolloped edge on its anterior half; around 

 white spot on each side behind the head, and a white band across 

 the anterior half of the frontal and supraoculars and on the pree- 

 oculars ; upper labials white, with black sutures ; ventrals and outer 

 row of scales white, with a black band on each side along the outer 

 ends of the ventrals. 



Total length 295 millim. ; tail 70. 



Celebes. 



a H"T. (V. 156 ; 0. 76). N. Celebes. Dr. A. B. Meyer [C.]. 



(Type.) 



