132 OPHIDIA. 
Hab. Norvu America—Mexico, throughout the country; GuATEMALA, Duefias, San 
Gerénimo, Rio Chisoy (Salvin), Alta Vera Paz and Coban (Bocourt). 
A species as variable as it is common. The variations observable in Central-American 
specimens cannot be localized, and seem to occur indiscriminately in any locality in 
which the species abounds. 
2. Tropidonotus saurita. 
Coluber saurita, Linn. Syst. Nat. i. p. 385. 
Tropidonotus saurita, Boie, Isis, 1827, p. 5385; Schleg. Ess. ii. p. 321; Dum. & Bibr. Erpét. vii. 
p. 585; Giinth. Cat. Col. Sn. p. 72; Jan, Iconogr. Ophid. xxvi. t. 2. fig. 1; Bouleng. Cat. ~ 
Sn. i. p. 212. 
Thamnophis saurita, Bocourt, Miss. Sc. Mex., Rept. p. 754, t. 55. fig. 1, t. 56. fig. 1. 
Coluber proximus, Say, in Long’s Exped. Rocky Mount. i. p. 187. 
Eutenia proxima, Baird & Gir. N.-Amer. Rept. p. 24; Cope, Bull. U. 8S. Nat. Mus. no. 32, p. 74. 
Thamnophis saurita, var. proxima, Bocourt, Miss. Sc. Mex., Rept. p. 757, t. 56. figg. 2. 
Eutenia rutiloris, Cope, Proc. Am. Phil. Soc. xxii. p. 388 (1885). 
Thamnophis saurita, var. faireyt, Bocourt, Miss. Sc. Mex., Rept. p. 758, t. 56. figg. 3. 
Hab. Norra America, east of the Rocky Mountains.—MeExico, Matamoros (Smithson. 
Inst.), Guerrero (H. H. Smith), Jalapa (Hége), Orizaba and Tuxpan in Vera Cruz 
(U. S. Nat. Mus.), Tehuantepec (Sumichrast), Cozumel I. (Gaumer); Briviso 
Honpuras (Mus. Brit.); Guaremata (Morelet). 
3. Tropidonotus chrysocephalus. 
Eutenia chrysocephala, Cope, Proc. Am. Phil. Soc. xxil. p. 173 (1884) ; Bocourt, Miss. Sc. Mex., 
Rept. p. 762, t. 57. figg. 1. 
Tropidonotus chrysocephalus, Bouleng. Cat. Sn. 1. p. 208. 
Hab. Mexico, Omilteme and Amula, alt. 6000-8000 ft., both in Guerrero (H. #. 
Smith), Orizaba in Vera Cruz (Sumichrast). 
4. Tropidonotus preeocularis. 
Eutenia preocularis, Bocourt, Miss. Se. Mex., Rept. p. 770, t. 56. figg. 7. 
Hab. British Honpuras, Belize. 
Known from two specimens, and distinguished by nineteen rows of strongly keeled 
scales, eight upper labials, three preoculars, &c. 
5. Tropidonotus multimaculatus. 
Atomarchus multimaculatus, Cope, Amer. Nat. 1883, p. 1309. 
Eutenia multimaculata, Cope, Proc. Am. Phil. Soc. Xxiii. p. 284 (1886). 
Hab. Mexico, Chihuahua city (U.S. Nat. Mus.). 
I have not seen a specimen of this species. 
