14. HELicops. 277 



subcaiidals 50-72. Dark olive-brown above, with four more or 

 less distinct blackish stripes ; a yellow stripe along the two lower 

 TOWS of scales ; yellow or red beneath, with black spots or stripes 

 on the belly, and a black stripe on the tail. 



Total length 1010 millim. ; tail 180. 



Brazil. 



A. JBelly with two regular longitudinal series of black spots. 



(C. carinicaudus, Wied.) 



a. 2 (V. 155; C. 54). Brazil. G.L.Conyngliam,Esq. 



[P.]. 



B. Belly with three black stripes. (//. infratceniatus, Jan ; 



JJ. triviftatm, Cope.) 



b. 2 (V. 135 ; C. 62). Rio Grande do Sul. Dr. II. v. Iliering [C. 



C. Belly checkerel with black. (//. balio /aster. Cups. 



c. 2 (V. 132 ; C. 70). Bio Grande do Sul. Dr. II. v. Ihering ,_ 



D. Belly anteriorly as in B, posteriorly as in C. 



.d-e. cS (V. 132 ; C. 72) Rio Grande do Sul. Dr. II. v. Ihering [0.1. 

 &yg. (V. 132; 0.65). 



7. Helicops modestus. 



Helicops cariuacaudu? {non Wied), Gra>j, Cat. p. 71 (1849). 



^modestus, Gimth. Ann. i^- Mag. N. H. (3) vii. 1861, p. 425, fig. 



? Helicops leprieui'ii, var. moesta, Jan, Arch. Zoo!. Atiat. Phi/i. iii. 



1865, p. 253. 

 Helicops assimilis, Reinh. Vld. Meddel. 1866, p. 151, fig. 



Eye small ; rostral visible from above, forming a narrow suture 

 ■with the iuternasal ; frontal twice as long as broad, much longer 

 than its distance from the end of the snout, shorter than the 

 parietals ; loreal deeper than long, sometimes fused with the prae- 

 ocular ; one or two prae- and two postoculars ; temporals 1 + 2 ; 

 seven or eight upper labials, third or fourth, or third and fourth, 

 .entering the eye ; four or five lower labials in contact witli the 

 anterior chin-shields*, which arc as long as or a little shorter than 

 the posterior. Scales in 19 rows, dorsals feebly keeled, laterals 

 smooth. Ventrals 119-125 ; anal divided ; subcaudals 43-67. 

 Dark olive above, with three lighter stripes or with two blackish 

 ones ; belly yellowish white, uniform or with a few brown spots. 



Total leng'th 490 millim. ; tail 95. 



Brazil. 



* T!ie .3 pairs of cliin-shields in the type specimen I re^vrd as an anomaly, 

 same as figured iu a specimen of Ischiiojnafhus dekayi by Dugas in 18SS. 



