228 ZOOLOGISCHE MEDEDEELINGEN — DEEL VI. 



Diameter of the eye equals its distance from the mouth ; rostral 

 about as broad as deep ; frontal more long than broad, twice as broad 

 as a supraocular, shorter than the parietals; one prae- and one post- 

 ocular; five upper labials, third and fourth entering the eye; first lower 

 labial in contact with its fellow behind the mental ; both pairs of chin- 

 shields in contact. Scales in 13 rows; ventrals 123 — 146; anal entire; 

 subcaudals 24 — 27. Tail ending in a point. 



Brown or greyish above, with small darker spots; on the nape two 

 or three white vertical spots, sometimes indistinct; a white streak on 

 the posterior labials; outer row of scales with white spots. Lower sur- 

 face yellow or reddish, each shield with a small dark spot on the outer 

 ends; a broad dark median line along the tail. Length of head and 

 body 245 mm. ; tail 33 mm. 



The specimen from Abail has Y. 130; Sc. 25, that from Sibigo Y. 

 134; Sc. 27. 



28. Hypsirhina albomaculata (D. B.). 



Sinabang 



I. 



1913. 



2 spec. 



II. 



1913. 



4 spec. 



III. 



1913. 



3 spec. 



Y. 



1913. 



1 spec. 



TIL 



1913. 



1 spec. 



Sibigo 



None of these eleven specimens have divided praefrontals ; three have 

 25 rows of scales round the body, whereas the number usually is 27 

 rows. The largest measures 760 mm. The species is restricted in its 

 distribution to Simalur, Nias and Sumatra (found near Padani). 



29. Cerberus rhynchops (Schn.). 



Sinabang I. 1913. 1 spec. 



„ II. 1913. 1 spec, caught in a swamp 



„ III. 1913. 6 spec. on the beach. 



IY. 1913. 1 spec. 



Y. 1913. 3 spec. 



Labuan Badjau YI. 1913. 1 spec. (juv.). 



Sibigo VIII. 1913. 2 spec. 



12. IX. 1913. 1 spec. 



Lasikin in Tapah 1 spec, caught on the beach. 



Nom. indig. Sawah butah-hè. Feeds on fish. 



