86 COLITBEID^. 



Himaiitodes semifasciatua, Cope, Amer. Nat. 1894, p. 613. 

 Dipsas gemmistrata (non Cope), Gilnth. Biol, C.-Am., Rept. p. 175 

 (1895). 



Closely allied to the preceding, the only structural difference- 

 being that the vertebral scales are not so large, mostly longer than 

 broad, the largest never broader than long. Ventrals 220-237;. 

 subcaudals 122-146. Pale brown above, head with dark brown,, 

 black -edged spots or symmetrical markings ; forty to sixty dark 

 brown black-edged large transverse spots on the body, the anterior 

 extending right across down to the ventrals, the others confined to 

 the back and accompanied on each side by a smaller spot ; lower 

 parts yellowish, dotted or powdered with dark brown. 



Total length 810 millim. ; taH 240. 



Central America. 



fl-6. Hgr. (V. 228, 220 ; Pacific Coast of Guate- O. Salvin, Esq. [0.1 



0. 124, 122). mala. 



o-e. c? (V. 237 ; C. 142) Cartago, Costa Rica. 



& 2 (V. 233, 231 ; 



0. 137, 146). 



3. Himamtodes lentiferus. 

 Himantodes lentiferus, Cope, Amei: Nat. 1894, p. 613. 



Agrees in structure, and particularly in the largest vertebral 

 scales being broader than long, with H. cencJioa, but diiiers in 

 having only 15 rows of scales. Dorsal spots terminating in an 

 angle near the ventrals ; no lateral spots. 



Total length 622 millim. ; tail 189. ,-^/ y /'/I.-/-' 



Eastern Ecuador. /^ v ■?!**^... '•' — „„!, ' ""*^ ~ ,"* ,„ 



- - - '-- / 



4. Himantodes gemmistratus. 



Himantodes cenchoa (non L.), Cope, Proc. Ac. PMlad. 1860, p. 264, 



gemmistratus, Cope, Proc. Ac. PMlad. 1861, p. 296, and 



Amer. Nat. 1894, p. 613. 



■ tenuissimus, Cope, Proc. Ac. PMlad. 1866, p. 317, and Amer. 



Nat. 1894, p. 613. 

 Dipsas gemmistratus, Cope, JourTi. Ac. PMlad. (2) viii. 1876, p. 131. 

 . gemmistrata latistrata, Cope, Bidl. U.S. Nat. Mus. no. 32, 1887, 



p. 68. 



tenuissima, Cope, I. c. ; Giinth. Biol. C.-Am., Bept. p. 176- 



(1895). 



splendida, Giinth. I. c. p. 176, pi. Ivi. fig. A. 



Eostral small, broader than deep, scarcely visible from above ;. 

 internasals much shorter than the prsefrontals ; frontal once and 

 one third to once and a half as long as broad, as long as or a, 

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

 than the parietals ; loreal as long as deep, or a little longer than 

 deep ; one praeocular (rarely divided) not reaching the frontal ; twO' 

 postoculars ; temporals 1+2 (or 2+3) ; eight upper labials, fourth 

 and fifth or third, fourth, and fifth entering the eye ; four to six 



