132 COLTJBETD^. 



u. S (V. 172 ; 0. 83). Rio NegTO, Patagonia. F. Ooleman,Esq. [P.], 



V, w. cJ (V. 171 ; 0. 93) ? Haslar Collection, 



& $ (V. 178; 0.?). (Types of Huophrys modestus )■ 



X. Skeleton. [Jruguay. 



y, z. Skulls. Brazil. 



5. PMlodryas Ijolivianus. (Plate IX. fig. 1.) 



Eye three fifths length of snout. Eostral a little broader than 

 deep, visible from above ; internasals shorter than the prEefrontals ;. 

 frontal once and two thirds to twice as long as broad, longer than 

 its distance from the end of the snout, as long as or slightly shorter 

 than the parietals ; loreal as long as deep ; one preeocular, in con- 

 tact with or narrowly separated from the frontal ; one or two 

 postoculars ; temporals 1 + 2 ; eight upper labials, fourth and fifth 

 entering the eye ; five lower labials in contact with the anterior 

 chin-shields, which are as long as the posterior. Scales smooth, 

 with single apical pits, in 17 rows. Ventrals rounded, 168-187 ; 

 anal divided ; subcaudals 101-104. OKve above, with three darker, 

 black-edged stripes ; a black streak on the outer border of the 

 parietal shields ; lower parts greyish oUve, throat white. 



Total length 690 millim. ; tail 200. 



Bolivia. 



a-h. £ (V. 187; 0. 101) & Charohamba. 

 yg. (V. 168; C. 104). 



6. PMlodryas psainiuopMdeus. 



Philodryas psammophideus, Gunth. Ann. §• Mag. N. H. (4) ix, 



1872, p. 23, pi. iv. fig. A. 

 Dirrhox latiyittatus, Cope, Proc. Amer. Philos. iSoc. xxiv. 1887, p. 58, 



Eye about three fifths length of snout. Eostral nearly as deep 

 as broad, well visible from above ; internasals shorter than the 

 prsefrontals ; frontal once and two thirds to twice as long as broad, 

 longer than its distance from the end of the snout, as long as or 

 slightly shorter than the parietals ; loreal longer than deep ; one 

 preeocular, extending to the upper surface of the head but usually 

 not reaching the frontal; two postoculars; temporals l-)-2or3; 

 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 smooth, 

 with single apical pits, in 19 rows. Ventrals rounded, 184r-204 ; 

 anal divided; subcaudals 82-96. Yellowish broivn or pale olive 

 above, with a brown vertebral stripe three or five scales wide ; 

 this stripe edged with a black line or a series of small black spots ; 

 a dark lateral stripe, extending to the eye ; a whitish lateral stripe 

 on the outer ends of the ventrals and the lower half of the outer 

 row of scales, edged below by a bl^ck line or series of dots ; lips 

 yellowish, with a few black spots ; belly yellowish, uniform or 

 dotted with blackish. 



Total length 1080 millim. ; tail 280. 



Matto Grosso, Uruguay, Argentina. 



