176 COLUBRID^. 



Rostral broader than deep, scarcel}' visible from above ; inter- 

 nasals broader than long, shorter than the pnef rentals ; frontal 

 nearly 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 prge- and two 

 postoculars ; 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; 

 subcaudals 61-86. 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 miUim. ; tail 105. 



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



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



(Type of D. ivuchereri). 



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



c. Yg. (V. 175 ; C. 08). Asunciou, Paraguay. Dr. J. Bohls (U.). 



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



tina. Marquis G. DoriafP.]. 



e. S (V. 172; C. 73). Cashiboya, N.E. Mr. W. Davis [C. | ; 



Peru. Messrs. Veitch [P.]. 



/. d (V. 165; 0.70). Peru? 



21. Rhadinaea decorata. 



Coronella decorata, GUnth. Cat. p. 35 (1858) ; Zool. Rec. 1866, 



p. 125, aw^ Biol. C.-Am.,Rupt. p. Ill (18U3). 

 Diadophis decoratus, Cojye, Proc. Ac. Philad. 1860, p. 250; Bocourt, 



Miss. Sc. Mex., Rept. p. 624, pi. xl. tig. 3 (1886). 

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



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

 BhadiniT^a decorata, Co2}e, Proc. Ac. Philad. 1863, p. 101, and Jourii. 



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

 Dromicus Ignitus, Cope, Proc. Ac. Philad. 1871, p. 201. 

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



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

 Coronella ignita, GUnth. Biol. C.-Am., Rept. p. Ill (1893). 



Eye moderate. Eostral broader than deep, scarcely visible from 

 above ; internasals broader than long, shorter than the pr;e- 

 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 prte- and two postoculars ; a small 

 subocular may be present below the prfeocular ; temporals 1 + 2 ; 

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



