120 COLTTBRID^. 



Opheomorplius chamiseonis, Cope, Proc. U.S. Nat. Mus. xii. 1880, 



p. 141. 

 Orophis biserialis, Gorman, Bull. Essex Inst. xxiv. 1892, p. 85. 



Eye moderate, superciliary border projecting : snout moderately 

 elongate, obtuse. Rostral broader than deep, just visible from 

 above ; internasals as long as broad, shorter than the prxfrontals ; 

 frontal twice as long as broad, longer than its distance from the end 

 of the snout, as long as the parietals ; loreal as long as deep or 

 longer; one prae- and two (rarely three) postoculara; temporals 

 1 + 2 or 2 + 2; eight upper labials, fourth and fifth entering the 

 eye ; four or five lower labials in contact with the anterior chin- 

 shields, which are as long as or a little shorter than the posterior. 

 Scales in 19 rows. Ventrals 179-225 ; anal divided ; subcauduls 

 100-122. Length of tail 3| to 4 times in the total length. Brown 

 or olive above, with or without black spots ; a dark vertebral stripe, 

 four or five scales wide, bordered on each side by a more or less 

 distinct yellowish streak which begins on the canthus rostralis ; 

 this dorsal stripe may be broken up into two series of spots ; labials 

 yellowish, usually with dark borders ; belly yellowish or pale 

 olive, dark-dotted or with a light dark-edged longitudinal streak on 

 each side ; chin and throat, in the young, brown, variegated with 

 yellow. ... 



Total length 1160 millim. ; tail 310. 



Chili, Peru, Galapagos Islands. 



a. $ (V. 193 ; C. 103). Chili. 



b. d (V. 188; C. 108). Chili. Mr. Bridge [C.]. 



c. d. $ (V. 200, 197; Colchagua. 

 C. 104, 100). 



e. Yg. (V. 182 ; C. 118). Luco Bay. Dr. Cunningham [P.], 



/. Yg. (V. 209 ; C. 110). Charles Id., Gala- C. Darwin [P.]. 



pagos. (TyP e of //. biserialis.) 



(j. <$ (V. 179 ; C. 110). ? 



h. Skull. Chili. 



2. Dromicus angnlifer. 



Dromicus angulifer, Bibr. in R. de lu Sagra, Hist. Cuba, Kept. p. 222, 

 pi. xxvii. [Culuber cantherigerus] (1843) ; Dum. $ Bibr. vii. p. (570 

 (1864); (fiinth. Cat. p. 129 (1858); Jan, Icon. G6n. 23, pi. vi. 

 (1867) ; Peters, Mon. Berl. Ac. 1809, p. 440. 



unicolor, Dum. fy Bibr. p. 658 ; Jan, op. cit. 24, pi. vi. fig. 2. 



Alsophis vudii, Cope, Prw. Ac. Philad. lb(>2, p. 74. 



angulifer, Cope, 1. c. p. 76; Gar in. Proc. Am. Pliilos. Soc. xxiv. 



1887, p. 282. 



Dromicus (Alsophis) angulifer, var. ndspersus, Gundl. $ Peters, Muu. 

 Berl. Ac. 1864, p. 388. 



ndspersus, Gundl. Repert.fis. Cuba, ii. 1868, p. 116, and F.rp. 



Cubana, p. 78 (I860). 



Diadophis rubescens, Cope, Proc. Am. Philos. Soc. xxii. 1885, p. 403. 



Alsophis caymanus, Garm. I. c. p. 276. 



angulifer caymanus, A. E. Brown, Proc. Ac. Philad. 1893, p. 433. 



Eye rather large, superciliary border projecting; snout rather 



