81. RHADIN^A. 171 



Rhaclionea genimaculata, Boukny. A7in. ^ Mag. N. II. (6) xiii. 1894, 

 p. 347. 



E3'e moderate. Rostral slightly broader than deep, scarcely 

 visible from above ; internasals broader than long, as long as the 

 pniifrontals ; frontal twice as long as broad, not mnch wider than the 

 supraocnlar, much longer than its distance from the end of the snout, 

 a little shorter than the parietals ; loreal as long as deep ; one pne- 

 and 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 a little longer than the posterior. 

 Scales in 17 rows. Ventrals 191-208 ; anal divided ; subcaudals 

 61-66. Pale grey-brown above, with three dark brown light-edged 

 longitudinal streaks; the vertebral streak widest, hardly tM'o scales 

 wide, and commencing on the occiput ; the lateral streaks widening 

 abruptly at the angle of the mouth and extending, through the eye, 

 to the end of the snout; upper lip and lower surface uniform white; 

 a pink stripe along the middle of the belly and under the tail. 



Total length 390 millim. ; tail 75. 



Paraguay. 



a. S (V. 191 ; C. 5.5). Paraguay. Hr. H. Ptohde [C.]. 



(One of tlie types.) 



b. $ (V. 199; C. 55). Asuncion. Dr. J. Bohls [C.]. 



13. Rhadinsea obtusa. 



Rhadinsea obtusa, Cope, Proc. Ac. PJiilad. 1863, p. 101. 

 Enicognathus, sp., F. Midi. Verh. nat. Ges. Basel, vii. 1882, p. 144. 

 Coronella obtusa, Bouleiuj. Ann. <^ Mag. N. H. (5) xv. 1885, p. 194. 



Eye rather small. Rostral a little broader than deep, scarcel)' 

 visible from above ; internasals broader than long, as long as the 

 prefrontals ; frontal once and a half as long as broad, twice as 

 broad as the supraocular, longer than its distance from the end of 

 the snout and a little shorter than the parietals ; loreal square ; one 

 prtE- and two postoculars; temporals l-|-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 or a little longer than 

 the posterior. Scales in 19 rows. Ventrals 174-192 ; anal 

 divided ; subcaudals 65-79. Pale brown above, with a dark brown 

 vertebral streak, occupying one scale and two halves, commencing on 

 the snout ; a dark brown lateral streak, extending round the snout 

 and passing through the eye ; sides and outer ends of ventrals 

 dark olive-grey ; upper lip and lower surface yellowish, unspotted. 



Total length 3S0 millim. ; tail 95. 



Southern Brazil, Uruguay, Argentina. 



a. S (V. 187 ; 0. 79). Rio Grande do Sul. Dr. H. v. Ihering[C.]. 



b. 2 (V. 185 ; C. 74). Dept. of Soriano, R. Havers, Esq. [P.]. 



Uruguay. 



c. c? (V. 174; C. 65). ColoniaResistencia, Prof. Spegazzini [C]; 



C. Chaco. jMarquisG. Doria[P.j. 



