162 
ON THE PHYSIOONOMY OF SERPENTS. 
on undivided scuta below the tail ; for a circle of small 
ocular plates ; for a large eye, with a round pupil ; and 
for very large mental plates. There are several long 
teeth at the extremity of the lower jaw. S. 154 + 98. 13 
rows of smooth scales, with the dorsals very large. Above 
of a grey-purple, relieved on the flanks by about twenty 
broad spots of a rose colour. Inhabits the interior of the 
Isle of Java. 
17. Dipsas carinata. Of small size. Head extreme- 
ly wide and thick ; muzzle rounded and shorter than in 
any other species ; lips projecting and curved ; eyes sur- 
rounded by four plates ; geneial plates very voluminous. 
15 rows of carinated scales, with the dorsals rather broad 
and truncated at the tip ; teeth delicate and comb-like ; 
bone of the cranium small. S. 168 + 60. Above of a 
marrone-brown, with dark close-set bands ; a mark with 
four points on the neck. From Java. 
18. Dipsas l^vis. Also from Java. Of smaller size 
than the last, to which it has a resemblance, except that 
it has all its features less marked, the form more heavy, 
and the tail shorter ; that the body is covered with smooth 
scales ; that it wants the frenal and inferior ocular plates ; 
and that the occipitals are surrounded with a row of other 
smaller plates. Of a deep brown colour, relieved on the 
upper parts by black transverse bands. S. 158 + 37. 
19. Dipsas leucocephala. Scales of almost the 
same size, slightly truncated at the tip, and disposed in 
19 rows ; abdomen faintly angular. Above of a grey- 
purple, marbled with brown, and varied by about 50 dark 
transverse bands ; form very slender. S. 244 + 108. 
From Brazil. 
20. Dipsas macrorhinta. Of a considerable size. 
F orm thin, yet robust ; head very thick ; muzzle very 
broad, almost of equal diameter with the trunk, rounded ; 
nostrils extremely open ; rostral plate advancing on the 
top of the muzzle; anterior frontals small; 19 rows of 
scales strongly carinated. S. 271 + 118. There are 
grooved posterior maxillary teeth. Body marked with 
alternate rings of black and white ; a white collar. Native 
of Cayenne. 
