255 



I. Glyphodon tristis Giinther. 



Glyphodon tristis^ Giinther, Cat. 1858, p. 21 1. 



Glyphodon tristis^ Boulenger, Cat. Sn. Ill 1896, p. 314, pi. XVIIl, fig. i. 



Snout rounded; eye about half as long as its distance from 

 the mouth. Rostral more broad than deep, visible from above; 

 posterior nasal separated from the praeocular; no loreal; inter- 

 nasals shorter than the praefrontals; frontal twice as broad 

 as the supraocular, as long as its distance from the rostral or 

 the tip of the snout, shorter than the parietals; one prae- and 

 two postoculars; temporals 2 + 2, lower anterior wedged in 

 between the fifth and sixth 

 upper labials; six upper 

 labials, second or second 

 and third in contact with 

 the praefrontal, third and 

 fourth entering the eye; 

 four lower labials in con- 

 tact with the anterior chin- 

 shields ; latter as long as 

 or shorter than the poste- 

 rior. Scales in 17 rows; 

 ventrals 165 — 179; anal 

 divided;subcaudals38 — 52, 

 in two rows or some of 

 the anterior single. 



Dark brown or blackish above, the scales light-edged; occiput 

 and nape sometimes yellowish or pale reddish. Lower surface 

 yellow, the outer ends of the ventrals dark brown; subcaudals 

 dark brown anteriorly, yellow posteriorly. Length of head 

 and body 775 mm.; tail 125 mm. 



Habitat: Aru Islands; New Guinea (St. Joseph's river, 

 Fly river!). — Islands of Torres Straits; N. E. Australia. 



6t^. Toxicocalamus Boulenger. 



(Bour.ENGER, Ann. Nat. Hist. (6) XVIII p. 152, 1896). 



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

 round; nostril between two nasals; no loreal; no praeocular. 

 Postfrontal bone absent. Maxillary teeth 6, gradually decreasing 

 in size, the first perforated; mandibular teeth gradually decreas- 

 ing in length. Body very long, round, covered with smooth 



Fig. 97. Glyphodon tristis Gthr. 

 After Boulenger. 



