152 On a neiv Genus of Elapine Snakes. 



Fig. 6. Pledotropis crassiuscula. 



Fig. 7. Planisjnva admirahilis. 



Fig. 8. Helicodyla {Corasia) subtenuis. 



Figs. 'J-'J b. Hypseliisto7na Everetti. 



Fig. 10. AmpMdromus kalaoensis. 



Fig. 11. AmpMdromus Annce. 



Fig. 12. Buli^ninus selmjarensis. 



Fig. 13. Cyclotus vicinus. 



Figs. 14, 14 a. Helicina kalaoensis. 



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

 Woodlarh Island^ British Neio Guinea. By C«. A. 

 BOULENGER, F.R.S. 



TOXICOCALAMUS. 



Allied to Ogmodon, Peters, and Gli/phodon, 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 veiy small, with 

 round pupil ; nostril pierced between two nasals ; no prte- 

 ocular ; postfrontal bone absent. Body cylindrical, extremely 

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

 rounded. Tail short; subcaudals in two rows. 



Toxicocalam us longissimus. 



Rostral a little broader than deep, visible from above; 

 internasals half as long as the pra^frontals, 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 2^9-305; anal 

 divided; subcaudals ;J0-3I. 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. 



