152 On a new Genus of Elapine Snakes. 



Fig. 6. Plectotropis crassiuscula. 

 Fig. 7. Planispira admirahilis. 

 . Fig. 8. Helieostyla (Corasia) subtenuis. 



Figs. 9-9 b. Hypsehstoma Fveretti. 

 Fig. 10. Amphidromus Jcalaoensis. 

 Fig. 11. Amjihidromus Anncs. 

 Fig. 12. Buliminus selayarensis. 

 Fig. 13. Cyclotus vicinus. 

 Figs. 14, 14 a. Helicina Jcalaoensis. 



XXI. — Description of a new Genus of Elapine Snakes from 

 Woodlarh Island, British New Guinea. By G. A. 

 BOULENGER, F.R.S. 



TOXICOCALAMUS. 



Allied to Ogmodon, Peters, and Glyphodon, Gthr. Max- 

 illary extending forwards as far as the palatine, with six 

 teeth gradually decreasing in length, the first a " perforated " 

 poison-fang ; mandibular teeth gradually decreasing in length. 

 Head small, not distinct from neck ; eye very small, with 

 round pupil ; nostril pierced between two nasals ; no pr£e- 

 ocular ; postfrontal bone absent. Body cylindrical, extremely 

 elongate; scales smooth, without pits, in 17 rows; ventrals 

 rounded. Tail short ; subcaudals in two rows. 



Toxicocalamus longissimus. 



Eostral a little broader than deep, visible from above; 

 internasals half as long as the prsefrontals, which are in con- 

 tact with the second and third upper labials and with the 

 eye; frontal small, slightly broader than the supraocular, 

 once and a half as long as broad, as long as its distance from 

 the end of the snout, much shorter than the parietals ; one 

 postocular; temporals 1+2; six upper labials, third and 

 fourth entering the eye ; three lower labials in contact with 

 the anterior chin-shields, which are a little longer than the 

 posterior. Scales in 17 rows. Ventrals 299-305; anal 

 divided ; subcaudals 30-31. Tail ending in a compressed 

 horny scute, which is keeled above. Grey-brown above, with 

 darker streaks along the scales ; sides whitish, each scale with 

 a grey-brown streak ; a yellowish bar across the snout ; 

 ventrals white, with two grey-brown longitudinal streaks. 



Total length 650 millim. ; tail 38. 



Two specimens were obtained on Woodlark Island by 

 Mr. A. S. Meek. 



