5. Hypsirhina polylepis Fischer. 



Hypsirhina polylepis^ Fischer, Abh. Nat. Ges. Hamb. IX 1886, p. 14. 

 Hypsirhina polylepis, Boulenger, Cat. Sn. Ill 1896, p. 9. 



Rostral more broad than deep; internasal single or double, 

 twice as broad as long; frontal broader than the supraocular, 

 slightly longer than its distance from the tip of the snout, as 

 long as or a little shorter than the parietals; loreal more long 

 than deep, not in contact with the internasal; one or two 

 prae- and two postoculars; temporals 1+2 or 1 + 3; eight 

 upper labials, fifth or fifth and sixth entering the eye; three 

 lower labials in contact with the anterior chin-shields, which 

 separate the posterior. Scales in 21 or 23 (25) rows; ventrals 

 137 156; anal divided; subcaudals 37 48. 



Dark olive or blackish above, the scales sometimes light- 

 edged; a yellow lateral streak along the second row of scales. 

 Lower surface brown, spotted with yellow or with a light 

 spot on each ventral near the outer end; tail dark, each sub- 

 caudal with a yellow spot. Length of head and body 775 mm.; 

 tail 125 mm. 



Habitat: New Guinea (Fly river!, Lorentz river!). 



Note. The specimens from the Lorentz river have two 

 outer rows of scales yellow, this yellow band continued to the 

 corner of the mouth, with dark spots. Lower surface yellow, 

 throat and anterior ventrals powdered with brown; sometimes 

 a dark median subcaudal line. 



6. Hypsirhina albomaculata (Dum. & Bibr.). 



Homalopsis albomaculatus, Dumeril Bibron, Erp. Gen. VII 1854, p. 974. 

 Hypsirhina albomaculata^ Boulenger, Cat. Sn. Ill 1896, p. II. 



Rostral more broad than deep; two internasals; praefrontals 

 sometimes longitudinally divided *); frontal broader than the 

 supraocular, as long as its distance from the tip of the snout 

 and as the parietals or latter a little longer; loreal slightly 

 more long than deep, in contact with the internasal; one 

 prae- and one or two postoculars; temporals 1 + 2 or 3; eight 

 or nine upper labials, fifth (fourth) entering the eye; five or 

 six lower labials in contact with the anterior chin-shields, which 



l) None of 10 specimens from Simalur have divided praefrontals; three 

 specimens have 25 rows of scales round the body. 



