190 Miss J. Procter on Reptiles and 
mm. 
Total lonoilc. a. cs c4 sick si Ronee gs a WB) 
Lengthiof neat 2). 5 See. ete cae 7 
Width-of head!) 330.000 55 a ee 5 
End of snout to fore limb .......... 15 
Length of fore limb. 5). s:6 <0. scab ees 2°5 
Length of hind Jitab,... . <> )s eae sie 1 
Length of tail (end reproduced)..... . 4 
Amphisbenide. 
3. Amphisbena alba, L. 
Boine. 
4. Epicrates cencris, L. 
Var. A of the British Museum Catalogue of Snakes. 
Colubrine. 
5. Herpetodryas carinatus, L. 
Var. C of the British Museum Catalogue of Snakes. 
6. Liophis pecilogyrus, Wied. 
7. Liophis guenthert, Peracca. 
Very closely allied to L. wridis, Gthr., but stouter in build. 
8. Liophis regine, L. 
9. Oxyrhopus guerini, D. & B. 
1 specimen, unusually strongly marked with broken trans- 
verse bands and blotches of cream-colour on a dark brown 
ground ; cream-colour below. In the British Museum 
Catalague of Snakes * the one difference cited between this 
species and O. neuwiedit, D. & B., is the form of the snout. 
In the key to the genus on p. 100 they are distinguished as 
tollows :— 
Rostral much broader than deep, forming an obtuse angle = 
posteriorly, its upper portion not more than half as long 
an its distance fromthe Trpntal jah. 5.6 ssiest aise a o)-i0 oi on neuwiedii, 
Rostral nearly as deep as broad, forming a right or acute 
angle posteriorly, its upper portion at least two-thirds 
ite distance from the frontal ce cp uwiks ss6 os sss oe guerini. | 
There are specimens, however, which are absolutely inter- 
mediate in this respect: two specimens of O. neuwiedii (from 
* Boulenger, Cat. Snakes, vol. iii, (1896). 
