32 COLUBRID.S. 



young. Ventrals without keel, 18-4-215 ; anal entire ; subcaudals 

 53-83. Brown to black above, yellow to black inferiorly. 



Total length 1880 millira.; tail 400. 



From the Southern United States to Brazil and Bolivia. 



A. Belly and lower surface of tail uniform yellow ; no black on the 



labials. (C. corals, Boie; C. flaviventris, Steind.) 



a. $ (V. 215; C. 72). Trinidad. 



6. $ (V. 210; C. 71). Demerara. 



c. <$ (V. 203; C. 79). Berbice 



d. $ (V. 206; C. 78). Caripe, Para. J. P. G. Smith, Esq. 



[P.]. 



e. cJ (V. 178; C. 81). Para. 



f,o. $ (V. 211; C. 77) & Pernambuco. J. P. G. Smith, Esq. 



yg. (V.202; C.77). TP.l 



h. J (V. 212; C.?). Pernambuco. W!A.Forbe8,Esq.[P.l. 



i. ? (V. 202; C. 72). Bahia. Dr. 0. Wucherer [0.1 



k. rf (V. 203; C. 73). Bahia. 



I. <5 (V. 204 ; C. 76). Brazil. Zoological Society. 



m. $ (V. 215; C. 76). Bolivia. M. Suarez [P.]. ' 



. Skull. Cayenne. 



B. Lower surface of tail black ; belly with the shields often black- 



edged or entirely black towards the tail ; at least the labials 

 below the eye with deep black bars on the sutures ; usually an 

 oblique black streak on each side of the neck. (C. melanurus, 

 D. & B. ; C. collaris, Steind.) 



a. Yg. (V. 184 ; C. 61). Duval Co., Texas. W. Taylor, Esq. [C.]. 



6. $ (V. 190; C. 69). Presidio, near Ma- Hr. A. Forrer [C.J; 



zatlan. F. D. Godman, Esq. 



[P.]. 



c-d. $ (V. 203, 200 ; C. Tres Marias Ids. Hr. A. Forrer [C.]. 



77, 81). 



e. $ (V. 189 ; C. 60). Tampico. F. D. Godman, Esq. 



/. Hgr. (V. 197 ; C. 71). Teapa, Tabasco. F. D. Godman, Esq. 



g. Yg. (V. 193 ; C. 77). Oaxaoa. M. Sali<5 [C.]. 



h.i. d (V.196; C. 77) & Yucatan. 



' yg. (V. 195 ; C. 76). 



k. Hgr. (V. 199; C.77). Stann Creek, Brit. Rev. J. Robertson 



Honduras. [C.]. 



0. Salvin, Esq. fC.l. 

 m, n, ^ (V. 198; C. 75) Duenas, Guatemala. O. Salvin, Esq. [C.J. 



Yg. (V. 209; C. 73). San Geronimo. O. Salvin, Esq. 



& $ (V. 198 ; C. 71). 

 o. (V. 198 ; C. 76). Lanquin, Guatemala. O. Salvin, Esq. [C.]. 

 p. rf (V. 202: C. 77). Guatemala. O. Salvin, Esq. [C.J. 



q-r. Yg. (V. 192, 203 ; C. Cartago, Costa Rica. 



78, 76). 



C. Nearly entirely black. (C. obsoletus, Holbr. ; C. cwperi, Holbr. ; 



C. erebennus, Cope.) 

 o, b. <$ (V. 189 ; C. 68) & Mexico. Mr. H. Finck [C.]. 



hgr. (V. 189; C. 73). 

 c. $ (V. 198 ; C. 65). Atoyac, Mexico. F. D. Godman, Esq. 



