DIPSAS BOOPS. 309 



the back; belly entirely black or on the sides only; sometimes a series of distant flesh- 

 coloured spots along each side of the belly : — males. 



Var. |3. Reddish- or yellowish-olive ; back of the trunk with 35-36 rhombic, rather irre- 

 gular black spots, extending downwards to the belly — the centre of each spot is the same as 

 the ground-colour ; belly uniform yellowish, or marbled with blackish or black : — females. 



This species is found in the Malayan Peninsula, Java, Borneo, Bali, and the Philippine 

 Islands ; it attains to a length of 82 inches, the tail measuring 19 inches. 



Cantor has confounded two species under the name of I), cynodon, — the young specimen 

 described by him, and examined by myself, belonging to D. (jokool, Gray. 



DiPSAS rORSTENI. 



Triglypbodon forsteui, Dum. ^ Bibr. vii. p. 1077. 



Scales smooth, with a broad apical groove, in twenty-five or twenty-seven series, those of 

 the vertebral series larger than the others. Ventrals 260-265 ; anal entire ; subcaudals 

 106-131. Nostril rounded, immediately below the anterior frontal; hinder margin of the 

 posterior nasal swollen, forming a rather prominent ridge ; loreal as high as long ; one prse- 

 ocular, extending on to the upper side of the head, but not reaching the vertical ; two post- 

 oculars. Nine upper labials, the third, fourth, and fifth of which enter the orbit ; the third 

 sometimes split into two. Temporals rather numerous, varying in form ; there are always three 

 in contact with the postoculars. Two pairs of chin-shields, the anterior much larger than the 

 posterior. Each maxillary is armed with ten equal teeth of moderate size and with a long 

 grooved tooth behind ; the two or three anterior teeth of the palatine and of each mandible 

 are enlarged and much longer than the others. Brownish olive, many scales black at the 

 base, the black spots forming rather broad transverse bands extending downwards on the 

 sides ; the lateral portions of these bands are frequently broken oif, forming separate spots. 

 Lower parts yellow, with more or less numerous blackish spots along each side. A longi- 

 tudinal median black band along the occiput and the nape of the neck ; a short black band 

 along each side of the neck ; another from the eye to the angle of the mouth. 



This species, described from a specimen the origin of which is unknown, was discovered 

 by Captain B. H. Beddome in the Anamallay Mountains; it attains to a length of 61 inches, 

 the tail measuring 13 inches. 



DiPSAS BOOPS. (Plate XXIV. fig. G.) 



Dipsas fusca, Motley ^ Dilhvyn, Nat. Hist. Labuan, p. 43 c. tab. 

 Dipsas boops, Gunth. Colubr. Snakes, p. 170. 



Body and tail very slender, much compressed ; head thick, eye very large ; nostril round, 

 wide. Scales smooth, in twenty-one rows, those of the vertebral series large, hexagonal. 

 Ventrals 265; anal entire; subcaudals 160. Loreal rather higher than long; one high 



