i / b COLUBElDiB. 



Eostral broader than deep, scarcel)' visible from above ; inter- 

 nasals broader than long, shorter than the prsefrontals ; frontal 

 nearl}' twice as long as broad, much longer than its distance from 

 the end of the snout, and slightly shorter than the parietals ; loreal 

 as long as deep, or a little deeper than long ; one prse- and two 

 postooulars ; temporals 1+2 or 2+2; eight upper labials, third, 

 fourth, and fifth entering the eye ; four or five lower labials in 

 contact with the anterior chin-shields, which are shorter than the 

 posterior. Scales in 15 rows. Ventrals 152-183; anal divided; 

 suboaudals 64-86. Tail 3| to 4| times in the total length. Back 

 olive-brown, with two alternating series of blackish, light-edged 

 spots, which are largest and sometimes confluent into cross bands 

 on the anterior part of the body, and may be lost altogether poste- 

 riorly ; sides usually darker, sometimes blackish grey ; head brown 

 above, with a blackish lateral streak, passing through the eyes, and 

 a white line round the snout, along the canthus rostralis and supra- 

 ciliary edge ; usually a pair of white dots close together on the 

 parietals ; sometimes a pair of larger light spots on the occiput ; 

 upper lip white ; belly white, with a lateral series of black dots, 

 which may be confluent into a longitudinal line. 



Total length 475 milHm. ; tail 105. 



Brazil, Paraguay, North Argentina, Bolivia, Eastern Peru. •- 



a. $ (V. 160; 0. 66). Bahia. Dr. 0. Wucherer [P.]. 



(Type of D. wuchereri). 



b. 2 (V. 183 : 0. 64). Rio Grande do Sul. Dr. H. v. Ihering [C.]. 



c. Yg. (V. 175 ; C. 68). Asuncion, Paraguay. Dr. J. Bohls (C). 



d. 3 (V. 178 ; 0. ?). Candelaria, Argen- M. J. Bove [0.] ; 



tina. Marquis G. Doria [P.]. 



e. cJ (V. 172; 0. 73). Caahiboya, N.E. Mr. W. Davis [C] ; 



Peru. Messrs. Veitch [P.]. 



/. S (V.165; 0.70). PeruP 



le'i 



21. Rhadinaea decorata. 



Coronella decorata, Giinth. Cat. p. 85 (1858) ; Zool. Mec. 1866, 



p. l-2o,and Biol. C.-Am., Bept. p. Ill (1893). 

 Diadophis decoratus, Cope, Proc, Ac. Philad. 1860, p. 250 ; Bocoiirt, 



Miss. 8c. Mex., Kept. p. 624, pi. xl. fig. 3 (1886). 

 Enicognathus vittatus, part., Jan, Arch. Zool. Anat. Phys. ii. 1863, 



p. 271, and Icon. Oen. 16, pi. ii. fig. 2 (1866). 

 Rhadinasa decorata. Cope, Proc. Ac. Philad. 1868, p. 101, and Jburn, 



Ac. Philad. viii. 1876, p. 138. 

 Dromicua ignitus, Cojye, Proc. Ac. Philad. 1871, p. 201 . 

 RhadinEea ignita, Cope, Journ. Ac. Philad. viii. 1876, p. 140, and 



Proc. Amer. Philos. Soc. xxxi. 1893, p. 344. 

 Coronella ignita, CHinth. Biol. C.-Am., Bept. p. Ill (1893). 



Eye moderate. Eostral broader than deep, scarcely visible from 

 above ; internasals broader than long, shorter than the prw- 

 frontals ; frontal once and a half as long as broad, longer than 

 its distance from the end of the snout, shorter than the parietals. ; 

 loreal square ; one or two prse- and two postoculars ; a small 

 subocular- may be present below the prseocular ; temporals 1+2; 

 eight upper labials, fourth and fifth entering the eye ; four or fiyo. 



