81. KHADIN^A. 171 



Rhadinsea genimaculata, Boulmg. Ann. ^ Mag. N. H. (6) xiii. 1894, 



Eye moderate. Eosfcral slightly broader than deep, scarcely 

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

 preefrontals ; frontal twice as long as broad, not much wider than the 

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

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

 and two postooulars ; 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 ; suboaudals 

 51-66. Pale grey-brown above, with three dark brown light-edged 

 longitudinal streaks ; the vertebral streak widest, hardly two 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. 55). Paraguay. Hr. H. Eohde [C.]. 



(One of the types.) 

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



13. Rhadinsea obtusa. 



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

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

 Coronella obtusa, Bouleng. Ann. 8f Mag. N. H. (5) xv. 1885, p. 194. 



Eye rather small. Eostral a little broader than deep, scarcely 

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

 prasfrontals ; 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 

 prffi- 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 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 aud lower surface yellowish, unspotted. 



Total length 380 millim. ; tail 95. 



Southern Brazil, Uruguay, Argentina. 



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



b. $ (V. 185 ; 0. 74). ^ Dept. of Soriano, E. Havers, Esq. [P.]. 



Uruguay. 



c. c5' (V. 174; 0.65). ColoniaResistencia, Prof. Spegazzini [C.]; 



0. Chaco. Marquis G.Doria [P.J. 



