246 ZOOLOGISCHE MEDEDEELINGEN — D EEL VI __ 



tween the internasals larger than that between the praefrontals, nearly 

 as large as the visible part of the rostral; frontal more long than broad, 

 much longer than its distance from the tip of the snout, only a little 

 shorter than the parietals ; loreal small a little more long than deep ; 

 one prae- and one postocular, temporals 1 + 2 ; seven upper labials 3rd 

 and 4th entering the eye ; four lower labials in contact with the anterior 

 chinshields, which are nearly twice- as long as the posterior ones. Upper 

 parts dark brown, with 12 broad, light coloured crossbands between the 

 head and the tail, these bands are on the middle of the back as broad 

 as 2 or 3 scales, the first three being chevronshaped. Between these 

 broad crossbands there are very narrow light crossbands. Tail dark brown 

 with four broad, light coloured crossbands. Lower parts whitish some- 

 times with dark spots in the angle of the ventrals. Head of a yellow 

 colour with a dark crossband running through the eyes till on the 

 upper labials, and another one running from the parietal to below the 

 angle of the mouth. A dark brown longitudinal band runs from the nape 

 till the rostral and a dark brown spot on the fore part of the 6th upper- 

 labial. 



Our single specimen shows very much resemblance with Boulenger's 

 description of Simotes annidifer, and Despax's Simotes annulifer var. bi- 

 partite. It differs from Boulenger's species in having only one postocular, 

 in the proportion of the scales of the head and in coloration, whilst 

 Despax specimen is characterised in having 17 rows of scales. As till 

 now there are only three specimens found, it is difficult to decide whether 

 the variations observed are individual, or whether these three specimens 

 must be regarded as to belong to these distinct variaties or even species. 



19. Elapoides fascus Boie. 



One specimen from Air Njuruk (Dempo, 1300 M.) Pasemah, Palem- 

 bang, Y III, 1916. 



Sc. 15. Ventrals 156, anal entire, subcaudals 



20. Ablabes tricolor (Schlegel). 



One specimen from Penatai, Korintji, VII, 1915. 

 Sc. 15. Ventrals 159, anal divided, subcaudals 114/114. 

 In our specimen the nostril is in contact with the demarcation line 

 between nasal and internasal. 



21. Ahlabes baliodiras (Boie). 

 Two specimens from Rimbo Pengadang (Lebong), Benkulen, VI, 1916. 



