434 Mr. G. A. Boulenger on the Reptiles and 



Xenodon rhahdocephalus. 



Coluber rahdneephalns, part., Wied, Abbild, 



Xenodon rhahdocephalus, Scbleo:. Serp. ii. p. 87, pi. iii. figs. 6 & 7 ; 



Glinth. Aun. & Mag. Nat. Hist. (3) xii. 1868, p. 353, pL v. fig. B ; 



Jan, Icon. Oph. 19, pi. iv. fig. 1 ; Hens. I. c. p. 32o. 

 Xenodon rhahdocephalus, part., Dum. & Bibr. v. p. 758. 



B. M. ; V. I. 



Xenodon Neuwiedii. 



Cohiber rahdocephalus, part., Wied, I. c. 



Xenodon rhahdocephalus, part., Dum. & Bibr. I. c. 



Xenodon Neuwiedii, Giinth. /. c. p. 354, fig. C ; Hens. /. c. p. 328. 



I have examined Hensel's two sjDecimens in the Berlin 

 Museum (6836) and found the identiiication correct. 



Heteeodon, Latr. 



a. None of the labials toucb the orbit Dorhignyi. 



b. Third and fourth labials entering the orbit histricus. 



Heterodon Dorhignyi. 



Heterodon Dorbic/nyi, Dum. & Bibr. vii. p. 772 ; Hens. I. c. p. 329 ; 



Jan, Icon. Oph. 48, pi. iii. figs. 3-4. 

 Lystropliis Dorhignyi, Cope, Proc. Am. Phil. Soc. xxii. p. 193. 



B. M. ; V. I. 



Heterodon histricus. 



Heterodon histricus, Jan, Arch, per la Zool. ii. 1863, p. 224, and Icon. 

 Oph. 11, pi. iv. fig. 2. 



B. M. ; V. I. Two specimens, from E-io Cahj, near S. 

 Joao de Monte Negro. 



Philodeyas, Wagl. 



A. Scales smooth. 



a. Scales in 19 roTvs; seven upper labials, third and fovirth 



entering the orbit ; scales black-edged or with small black 



spots Schottii. 



b. Scales in 17 rows ; seven upper labials, third and fourth 



entering the orbit ; back with three dark longitudinal 



bands, the median occupying three series of scales tceniatus. 



c. Scales in 19 rows ; eight upper labials, fourth and fifth 



entering the orbit ; green above, usually with a reddish- 

 brown vertebral line Olfersii. 



B. Scales keeled ; gi'een above cBstivus. 



Philodryas Schottii. 



Xnodon Schottii, Schleg. Serp. ii. p. 91, pi, iii. figs. 8 & 9. 



Dryophylax Schottii, Dum. & Bibr. vii. p. 1118. 



Philodryas Schottii, Giinth. Cat. Col. Sn. p. 125 ; Hens, /. e. p. 332. 



