1854.] Notices and Descriptions of various Beptiles. 291 



the present species bears a near approximation in the details of its 

 structure. Sixteen rows of scales, the four median slightly carinated. 

 Scuta? 192-4; scutellae 126-132 pairs. Hab. Vicinity of Darjiling, 

 where procured by Capt. "W. S. Slierwill, who sent with it examples 

 of U. radiatus, C. korros, and C. easciolatus. Dr. Kelaart has 

 also favoured us with C. korros from Ceylon ; but the species does 

 not appear to have been hitherto observed in the Indian peninsula. 



C. PRA.SINUS, nobis, n. s. "Wholly green, becoming verditer in 

 spirit ; glaucous below and bordering the mouth : 19 rows of slight- 

 ly carinated scales : scutae 205, 6 ; scutella? 107, 8 pairs. Vertical 

 shield triangular with rounded apex ; rather larger than the supra- 

 orbitals, and rather smaller than the occipitals : a single large prse- 

 orbital, and one elongate-oval fraenal. Tail suddenly tapering. The 

 larger of two specimens measures 37 in., of which tail 9 in. From 

 A sain. Mr. Robinson. 



C. hexagonottts (?), Cantor,* var., adult. Length 4 ft., of 

 which tail \5h in.; the latter remarkably slender. Colour brown, 

 paler below ; the anterior fourth of the body marked with transverse 

 dusky bands, which become gradually more obscure till they dis- 

 appear. Seventeen rows of slightly imbricated scales, the median 

 row hexagonal. Vertical plate large, pentagonal, broad to the front. 

 Two prae-orbitals, the lower small and bordered by the third and 

 fourth labials ; the fourth labial bordering the eye, which is of 

 moderate size ; two post-orbitals, and a third or infra-orbital border- 

 ing on the fourth, fifth, and sixth labials : nasals large, elongate, the 

 nostril opening in the middle, near the outer border of the anterior 

 frontal ; a single small sub triangular fraenal. Seutae 195 ; scutella3 

 144 pairs. Hab. Arakan (Eamri) ? 



C. diadem a, Schlegel ; C. Oppellii, "Wagler. This is a little 

 known species ; and two examples of it in our museum (origin uncer- 

 tain) would not be readily recognised from Eussell's plate (II, 30), 

 which would appear to have been taken from an old and remarkably 

 thick individual. One of the Society's specimens is of about equal 

 length to that figured by Kussell, but is much more slender ; the 

 other is smaller. The markings of the head arc very peculiar, as 

 the transverse black band from eye to eye and continued below the 



* /. A. S. XVI, 921. 



2 q 2 



