116 OPHIDIA. 
with a whitish spot on each side of the scale; lower parts uniform whitish. Ventrals 
246-260; anal divided; subcaudals 111-113. 
The largest of three specimens is 49 inches long, of which the tail measures 11. 
The smallest is only half the size, but also without a trace of spots. 
At Atoyac this snake is eaten roasted by the poor country people. 
SPILOTES. 
Spilotes, Wagler, Nat. Syst. Amphib. p. 179 (1830). 
1. Spilotes corais. 
Coluber corais, Cuv. Régne Anim. ; Schleg. Ess. t. 5. figg. 9, 10. 
Spilotes corais, Dum. & Bibr. Erpét. vii. p. 222; Salv. P.Z.S. 1860, p. 456; 1861, p. 228; 
Giinth. Cat. Col. Sn. p. 98 ; Cope, Bull. U. S. Nat. Mus. no. 32, p. 72. 
Hab. CeytraL Amertca.—Eastern and Northern Tropical South America. 
Var. 1. Tail black. 
Spilotes melanurus, Dum. & Bibr. Erpét. vii. p. 224; Cope, Proc. Ac. N. Se. Phil. xii. p. 564 
(1861) ; Sumichrast, Arch. Sc. Bibl. univ. 1873, p. 259. 
Spilotes corais, var. melanurus, Bocourt, Miss. Sc. Mex., Rept. p. 687, t. 44. figg. 1, 1 a—e. 
Hab. Norva America, Duval Co., Texas (W. Taylor).—Mexico, Tampico (Richardson), 
Colima, Tuxpan, and Vera Cruz (Cope), Teapa in Tabasco (H7. H. Smith), Oaxaca 
(Sallé), Tehuantepec (Sumichrast), Yucatan (Mus. Brit.); Brivish Honpuras, 
Stann Creek (J. Robertson) ; Guatemata, Duefias, Lanquin, San Geronimo (Salvin) ; 
Costa Rica, Cartago (Mus. Brit.), San José and Talamanca (Cope); Panama (Cope). 
Var. 2. Entirely black, or only the abdomen white. 
Coluber obsoletus, Holbrook, N. Amer. Herpet. iii. p. 61, t. 12. 
Georgia obsoleta, Baird & Gir. N. Amer. Rept. p. 158. 
Spilotes erebennus, Cope, Proc. Ac. N. Se. Phil. xii. p. 564 (1861). 
Spilotes corais, subsp. erebennus, Cope, Journ. Ac. N. Sc. Phil. vii. p. 185 (1875). 
Hab. Norru America, Texas, Eagle Pass (U. S. Nat. Mus.).—Mexico, Presidio, Tres 
Marias Is. (Forrer), Guanajuato (Dugés), Jalapa (Commiss. Geogr.), Atoyac in Vera 
Cruz (H. H. Smith). 
2. Spilotes salvini. (Tab. XLII.) 
? Seba, Thesaur. ii. t. 20. fig. 1. 
? Cerastes mexicanus, Laur. Syn. Rept. p. 83 (1768). 
Spilotes variabilis, var. A, Giinth. Cat. Col. Sn. p. 99. 
Spilotes pullatus, subsp. auribundus, Cope, Proc. Ac. N. Sc. Phil. xiii. p. 800 (1862). 
Spilotes auribundus, Cope, Bull. U.S. Nat. Mus. no. 32, p. 71; Bocourt, Miss. Sc. Mex., Rept. 
. p- 689, t. 44. figg. 5, 5 af. . 
Spilotes salvini, Giinth. Ann. & Mag. N. H. 1862, ix. p, 125, t. 9. fig. 5 (head). 
