134 COLUBRID^. 



elongate, usually eiitei'ing the eye, widely separated from the 

 interuasal ; no praeocular ; 2 or 3 postoculars ; temporals 1 + ^^ ; 

 8 upper labials, third, fourth, and fifth (sometimes also the sixth) 

 entering the eye ; 4 lower labials in contact with the anterior 

 chin-shields, which are usually longer than the posterior. Scales 

 in 17 rows, dorsals feebly or faintly keeled. Ventrals 198-230, 

 angulate laterally ; anal divided (rarely entire) ; subcaudals 61-90. 

 Dark brown or purplish black above, brown or yellowish brown 

 below, with a white occipital blotch and widely separated white 

 rings on the body and tail ; these markings become less distinct or 

 entirely disappear in the adult. 



Total length 1000 milhm. ; tail 180. 



Malay Peninsula and Archipelago. Known from Penang, 

 Perak (Larut Hills (4400 feet), Taipiug) ; .Tohore Bahru, Kuala 

 Teku, Pahang ; Kemamau, Kelantan, and Singapore. 



Peeds on lizards. 



As Capt. Plower remai'ks, the similarity in coloui'ing of this 

 harmless snake and the larger poisonous Bwu/arvs candidus is 

 Avorthy of notice. 



Genus DRYOCALAMUS. 



Gunth. Cat. Col. Sn. p. 121 (1858). 



Maxillary teeth 8 to 10, rather short but stout, increasing in 

 size posteriori V ; anterior mandibular teeth a little longer than the 

 posterior; one or two more or less distinct tooth-like knobs on the 

 basisphenoid. Head distinct from neck, much depressed ; eye 

 moderate or rather large, with vertically elliptic pupil. Body 

 slender, slightly compressed; scales smooth, in 13 or 15 rows, 

 with apical pits ; ventrals strongly keeled on each side. Tail 

 moderate : subcaudals in two rows. 



South-Eastern Asia. A single species in the Malay Peninsula. 



141 . Dryocalamus subannulatus. 



Odoiitoimts suhinmulatvs, Diim. k J^ibr. Erp. Gen. vii, p. 454 



(1854). 

 Nympltophidhnn mandiiinm, Giiiith. Rept. Brit. Iiid. p. 235, 



pi. xix, fig. 11 (1864). 

 Hydroplwhvs svhumndatns, Bouleng. Faun. Brit. Ind., Rept. p. 297 



(1890). 

 Di'yocalamns sidmnrndatus, Bouleng. Cat. Sn. i, p. 371 (189.3). 



Eostral not twice as broad as deep, visible from above ; suture 

 between the internasals as long as or longer than thnt between the 

 prsefrontals ; frontal once and a half as long as broad, longer than 

 its distance from the end of the snout, shorter than the parietals ; 

 loreal longer than deep, entering the eye ; 1 prae- and 2 post- 



