SNAKES. 145 



a. Adult. Coast of Guinea. 



b. Adult. W. Africa. From Mr. Raddon's Collection. 



c. Adult. W. Africa. From Mr. Raddon's Collection. 



2. Hapsidophrys cceruleus. 



Fischer, I. c. f. 6a, 6b. 



Anal bifid ; two or three temporal shields ; two posterior ocu- 

 lars; above bluish green; beneath yellowish green. West 

 Africa. 



Fischer mentions the teeth as equal, but I found in the best- 

 preserved of our specimens the dentition as above stated. 



3. Chrysopelea, Boie. 



Body and tail very elongate and slender ; head depressed, snout 

 rather obtuse ; nostril between two shields ; pupil round ; upper 

 labials narrow ; scales not much elongated, rhombic ; ventral 

 plates appearing to be formed out of three pieces, one medial and 

 two laterals, the latter raised on the sides, erect (in Ch. prceornata, 

 ventral keels more obsolete) ; subcaudal plates two-rowed ; pos- 

 terior maxillary teeth longer and furrowed, anterior nearly equal 

 in length. India ; Western Africa. 



Chrysopelea, Boie, Isis, 1827, p. 520 ; Wagler, Nat. Syst. der 

 Arnph. p. 188 ; Dum. Sf Bibr. viii. p. 1040. Dendrophis, sp., 

 Reinw., Schleg., Filippi. Dipsas, sp., Gray, Ind. Zool. Coluber, 

 sp., Natrix, sp., auct. prior. 



1. Chrysopelea rhodopleuron. 



Seba, i. 109. 1 ; Russell, i. t. 31, bad. Dendrophis rhodo- 

 pleuron, Reinw.; Schleg. Ess. t. 11. f. 11-13. Coluber tristis, 

 Daud. Rept. vi. 430. Coluber scandens, Schneider in Lacep. 

 Uebers. v. Bechstein, iv. t. 45. f. 2 ; Merr. Tent. p. 129. Dendro- 

 phis tristis, Boie, Isis, 1827, p. 542. Chrysopelea rhodopleuron, 

 Boie, I. c. p. 547 ; Dum. Sf Bibr. vii. p. 1045. 



Scales keeled. Ground colour purple, red-brown or blackish, 

 sometimes with some irregular black spots on the sides of neck, 

 or with black-edged scales. 



a. Adult: not good state. Amboyna. From the Ley den Museum. 



2. Chrysopelea rubescens. 



Dipsas rubescens, Gray, Ind. Zool. pi. f. 2. 



Scales smooth, in fifteen rows ; upper labials nine, fourth, fifth 



H 



