64 BULLETIN 18 7, UNITED STATES NATIONAL MUSEUM 



Type locality. — Mexico. 



Range. — Central portion of the Isthmus of Tehuantepec, and north- 

 western Chiapas (only two known records, from Guichicovi, Oaxaca^ 

 and "Tustla," perhaps of Chiapas). 



Genus GEAGRAS Cope 



Oeagras Cope, Journ. Acad. Nat. Sci. Philadelphia, ser. 2, vol. 8, 1876, p. 141. 



Genotype. — Geagras redimitus Cope. 



Jlange. — The Isthmus of Tehuantepec and southern Sinaloa. 



Species. — One. 



GEAGRAS REDIMITUS Cope 



Oeagras redimitus Cope, Journ. Acad. Nat. Sci. Philadelphia, ser. 2, vol. 8, 1876, 

 p. 141.— Smith, Proc, U. S. Nat. Mus., vol. 93, 1943, p. 430. 



Sphenocalamus Uneolatus Fischer, Oster-Progr. Akad. Gymn. Hamb., 1883, p. 5 

 (type locality, Mazatlan [Sinaloa ?] type, Hamburg Mus. No. 1067). 



Tantilla depressa Dunn, Amer. Mus. Nov., No. 314, 1928, p: 4 (type locality, 

 Mrstequilla, Oaxaca ; type, Amer. Mus. Nat. Hist. No. 19747) . 



Type.— v. S. N. M. No. 30115. 

 Type locality. — ^Tehuantepec. 



Range. — Pacij&c slopes of the Isthmus of Tehuantepec; possibly 

 southern Sinaloa (recorded definitely only from the state of Oaxaca). 



Genus GEATRACTUS Duges 



Geatractus Dug:&8, La Naturaleza, ser. 2, vol. 3, 1898, p. 52 ; Proc. Zool. Soc. Lon- 

 don, 1898, pp. 539-540. 



Genotype. — GeopMs tecpanecus Duges. 

 Range. — ^\Vestern Guerrero. 

 Species. — One. 



GEATRACTUS TECPANECUS (Dngis) 



GeopMs tecpanecus Duges, La Naturaleza, ser. 2, vol. 2, 1806, pp. 455-456, pi. 



28, figs. 1-6. 

 Oeatractus tecpanecus Duofes, ibid., vol. 3, 1898, p. 52; Proc. Zool. Soc. London, 



1898, pp. 539-540. 



Type. — Museo Alfredo Duges, University Guanajuato, Guanajuato, 

 Mexico. 



Type locality. — Tecpan de Galeana, Guerrero. 

 Range. — Known only from the type locality. 



Genus GEOPHIS Wagler 



Catostoma Waglee, Natiirliches System der Amphibien, 1830, p. 194 (type, C. 

 chalybeurn Wagler). 



Gcophis Wagler, ibid., p. 342 (alternative name for Catostoma, of same article, 

 proposed to avoid confusion with Catostomus Lesueur, 1817; although 

 Catostoma has page priority and is not suppressed by Catostomus, either 



