436 Mr. G. A. Boulenger on the Rejjtiles and 



Humalopsis carinicamlus, Schleg.Serp. ii. p. .350, pi. xiii. tigs. 17 & 18. 

 Helicops infmiceniatus, Jan, Arcb. per la Zool. iii. 18C5, p. 245, and 



Icon. Oph. 28, pi. iii. fig. 3 ; Cope, Proc. Amer. Philos. Soc. xxii. 



1885, p. 193. 

 Helicops trivittatus, Cope, Proc. Amer. Philos. Soc. xvii. 1877, p. 92. 

 Helicops haliogaster, Cope, Proc. Amer. Pliilos. Soc. xxii. p. 193. 



B. M.; V.I. 



Leptognathus, D. & B. 



a. Loreal shield not touching the eye ; srales in 13 rows Cateshyl. 



b. Loreal shield entering the eye ; scales in 15 rows ; 



three upper labials posterior to those which enter 



the orbit ; belly powdered with brown Mikanii. 



c. Loreal shield entering the eye ; scales in 15 rows ; 



two upper labials posterior to those which enter 



the orbit ; belly with large black spots ventrtmaculatus. 



Leptognathus Catesbyi. 



Bipsas Catesbyi, Schleg. Serp. ii. p. 279, pi. xi. figs. 21-23. 



Stremviatognathus Catesbyi, Bum. & Bibr. vii. p. 522. 



Leptoynatlms Catesbyi, Giinth. Cat. Col. Sn. p. 180 ; Cope, Proc. Ac. 



Philad. 1868, p.' 107; Jan, Icon. Oph. 37, pi. ii. fig. 2; Cope, 



Proc. Amer. Philos. Soc. xxii. p. 193. 



Introduced here on the authority of Cope, no specimens 

 having been obtained by Hensel or by Dr. v. Ihering. 



Leptognathus Mikanii. 



Dipsas Mikanii, Schleg. Serp. ii. p. 277. 



Anholodon Mikani, Bum. & Bibr. vii. p. 1165. 



Leptoqnathus Mikanii, Giinth. Cat. Col. Sn. p. 178 ; Cope, Proc. Ac. 



Philad. 1868, p. 108 ; Jan, Icon. Oph. 37, pi. vi. fig. 3 ; Bouleng, 



Ann. & Mag. Nat. Hist. (5) xv. p. 195. 



B. M. ; V. I. 



Leptognathus ventrimaculatus. 



Leptognathus ventrimaculatus, Bouleng. Ann. & Mag. Nat. Hist. (5) 

 xvi. p. 87. 



B. M. ; V. I. 



Thamnodynastes, Wagl. 



«. Scales keeled Nattereri. 



b. Scales smooth strigatus, 



Thamnodynastes Nattereri. 



Coluber Nattereri, Mikan, Belect. Faun. Bras. ; Wied, Abbild. 

 Dryophylax Nattereri, Wagl. Syst. Amph. p. 181. 

 Dipsas Nattereri, Schleg. Serp. ii. p. 290 ; l)um. & Bibr. vii. p. 1149. 

 Thamnodynastes Nattei-eri, Giinth. Cat. Col. Sn. p. 164 ; Hens. /. c. 

 p. 332 ; Jan, Icon. Oph. 39, pi. ii. fig. 3. 



B. M. ; V. I. 



