1 1 L ra. 



visoniin, '' I'hilml. IH;C,. p. ]i'.. 



. lici-.Jdlu-li. JI(iin/>. Wits. Anst. ii. 1885, ji. '.'i' 

 Aili-lphir !><, Hull. r..V. AW. 3/iw. no. 32, ]N-7. ; 



- \i-iuiinus ('('!, I. <: 



Snout obtuse. Rostral small, a little deeper than broad, visible 

 from abo\i : pnel'nmtals nearly as long as broad ; frontal nearly as 

 broad as long, as long as its distance from the rostral or from the 

 tip of the snout, shorter than the parietals ; lorcal at least twice, as 

 long as deep ; two postoculars ; temporals 1 + 1, rarely 1 +- : seven 

 upper labials, third and fourth entering the eye; a single pair of 

 chin-shields, separated from the symphysial ; in consequence 

 of the great width of the chin-shields, the three anterior lower 

 lalials are much reduced, very narrow. Scales in 15 rows. Ventrals 

 1 44 ; anal divided ; subcaudals' 25-43. Pale reddish brown 

 above, with four or five dark brown or blackish longitudinal lines 

 or stripes ; white beneath, with a brown line along the middle of 

 the tail, and sometimes also along the belly. 



Total length 365 milliui. ; tail 55. 



Central America. 



<i. $ (V. 133 ; C. 35). Mexico. M. Saltf [C.]. 



b. Yg. (V. 120; C. 43). Honduras. Mr. Dyson [C.]. 



.. Ilirr. 9 (V. 141; C. Guatemala. Stuttgart Mas. [E.]. 



28). (One of the types of R. saryii. i 



d. $ (V. 144 ; C. 28). - ? 



22. Atractns favae. 



Ciilam.irin fava:, Ulippi, Cat. Ray. Serp. Mm. Pavia, p. 16 (1840). 

 Rabdosoma longicaudatum, Dum. 8f Bibr. vii. p. 1CX> i I ^" J ) : fiiinih. 



Cat. p. ll> (18T>8) ; Jan, Arch. Zool. Anat. Phys. ii. 18G2, p. 15, 



and Icon. Gtn. 11, pi. i. fig. 2 (1865). 

 fava.', Jan, II. cc. p. 16, pi. ii. fig. 3. 



Snout rounded. Rostral moderately large, a little broader than 

 deep, just visible from above ; internasals small, broader than long ; 

 praefrontals broader than long ; frontal as long as broad, as long as 

 its distance from the frontal, much shorter than the parietals ; loreal 

 nearly twice as long as deep ; a small pneocular sometimes present. 

 above the loreal; two postoculars; temporals 1-t-lJ; seven upper 

 labials, third and fourth entering the eye ; a single pair of 

 moderately largo chin-shields, in contact with the symphysial and, 

 on each side, with three lower labials. Scales in 17 rows. Ventrals 

 17 1-1 So; anal entire; subcaudaU ">- ''. Tail long and thick, 

 ending in an obtuse point. Brown above, with darker spots and a 

 rather indistinct darker vertebral line; yellow (red?) beneath, with 

 large black blotches, which mostly alternate. 



Total length 4^0 millim.; tail 110. 



I5rax.il ? 



a. rf (V. 17 I>r. fiuntlu'r I 1 



b. $ (V. i: ? 



