143 



orbits; middle supraocular scales a little enlarged ; temporals 

 very small. Nuchal scales very large, round and flat, generally 

 with a short, feeble keel, widely separated from one another 

 by fine granules. Body covered above with very unequal, 

 feebly keeled scales, those on the vertebral line smallest; two 

 or three alternating series of large oval scales on each side 

 of the middle line and a series of enlarged scales on each 

 side of the body. Ventral scales keeled '), in about 80 trans- 

 verse series. Tail compressed, nearly one time and a half as 

 long as head and body, covered with keeled scales of which 

 the lower are twice as large as the upper; a very low, doubly 

 toothed crest above. Limbs strong; digits long. 



Dark brown above; a black streak on each side of the nape 

 anteriorly; two crescentic transverse bands on the nape and 

 a third on the back between the fore limbs. Lower parts 

 reddish-brown; throat variegated with black. Length of head 

 and body 430 mm.; tail 610 mm. 



Type-specimen examined in the British Museum. 



Habitat: Borneo (Mt. Dulit! and Baram, Sarawak). 



2. Varanus dumerili (Schleg.). 



Monitor Dumerilii^ Schlegel, Abbild. 1844, p. 78. 



Varanus dumerilii^ Boulenger, Cat. Liz. II 1885, p. 312 (s. syn). 



Snout depressed at the tip, a little longer than the distance 

 between the anterior border of the eye and the ear; canthus 

 rostralis indistinct; nostril oblique, about two times nearer the 

 orbit than the tip of the snout; teeth sharp, compressed. 

 Head-scales not very large, subequal; scales in the middle 

 of the supraocular region a little enlarged transversely. Nuchal 

 scales very large, almost as long as broad, flat, only the 

 posterior keeled. Body covered with large, oval, keeled scales. 

 Ventral scales with a slight keel, in 75 to 85 transverse series. 

 Tail strongly compressed, covered with keeled scales, some- 

 times enlarged on the sides; a very low doubly toothed crest 

 above. Limbs strong; digits moderate. 



Light brown or olive-brown above, with broad dark trans- 

 verse bands, broader than the interspaces; a dark temporal 



i) Brown (Proc. Acad. Philad. LIV 1902, p. 177) describes a specimen with 

 smooth ventral scales. 



