along the outer ends of the ventrals. Length of head and body 

 545 mm.; tail 165 mm. 



Habitat: Java; Celebes! (N.Celebes (type of Tr. callistus) !, 

 Minahassa, Manado, Tomohon !, Bone Valley, Kema, Rurukan); 

 Sangir Islands (Siao). 



19. Tropidonotus flavifrons Boulenger. 



Tropidonotus flavifrons^ Boulenger, Ann. Nat. Hist. (5) XX 1887, p. 96; Cat. 

 Sn. I 1893, p. 263. 



Head short, eye moderate; rostral more broad than deep, 

 scarcely visible from above; internasals broadly truncate ante- 

 riorly, half as large as the praefrontals; frontal longer than its 

 distance from the tip of the snout, shorter than the parietals; 

 loreal as long as deep; one prae- and two or three postoculars; 

 temporals 2 + 3 ; eight or nine upper labials, fourth and fifth 

 or fifth and sixth entering the eye ; five lower labials in contact 

 with the anterior chin-shields; latter shorter than the posterior. 

 Scales in 19 rows, feebly keeled, those of the outer row 

 smooth; ventrals 146 155; anal entire; subcaudals 87 102. 



Olive above, with a dark network; two series of white spots 

 along each side, parallel or alternating, the upper series on 

 the sixth row of scales, the lower larger and on the border 

 of the ventrals; on the snout and forehead a large yellow 

 spot; labials with black sutures. Lower surface whitish with 

 large black spots; lower side of the tail black, each subcaudal 

 with a greyish spot. Length of head and body 361 mm.; 

 tail 179 mm. 



Habitat: Borneo (Kina Balu !, Sebruang Valley, Penrissen 

 Hills in Sarawak). 



20. Tropidonotus stolatus (L.). 



Coluber stolatus, Linne, Syst. Nat. I 1766, p. 379. 



Tropidonotus stolatus, Boulenger, Cat. Sn. I 1893, p. 253 (s. syn.). 



Eye moderate; rostral just visible from above; internasals 

 narrowed anteriorly, about as long as the praefrontals; frontal 

 longer than its distance from the tip of the snout, as long as 

 the parietals; loreal as long as deep or more deep; one prae- 

 and three postoculars; temporals i + i or i + 2; eight upper 

 labials, third to fifth entering the eye; five or six lower labials 

 in contact with the anterior chin-shields; latter shorter than 



