303 



THAMNOPHIS 



Key to the subspecies Clave de subespecies 



1. Vertebral stripe present, broad; blacl< 1. Con cinta vertebral ancha; manchas ven- 

 ventral spots small and separate trales negras chicas y separadas- 



- praeocular i s praeocular i s 



Vertebral stripe absent; black ventral Sin cinta vertebral; manchas ventralcs 



spots large and often interconnected negras grandes y a menudo i nterconectadas 



across venter bovall i i a traves del vientre bovall i i 



Thamnoph i s marc ianus bovall i i Dunn, new combination 



l')AO Thamnoph i s bovall i i Dunn, Herpetolog i ca, 1: 151« Type-locality: Granada, Nicaragua. 

 Distribution: Lakes Managua and Nicaragua, Nicaragua, to northern Costa Rica. 



Thamnoph i s marc ianus praeocular is (Bocourt), new combination 



I852 Eutaen ia praeocular is Bocourt, Le Naturaliste, (2) 14: 278. Type-locality: Belize, 

 British Honduras. 



1937 Thamnoph i s arabdotus Andrews, Zool. Ser, Field Mus. Nat. Hist., 20: 357' Type-locality: 



Catmis, Quintana Roo, Mexico. 

 1940 T.[ hamnoph i s j praeocular is — Dunn, Herpetolog ica, 1: 191. 

 1942 Thamnoph i s sum i chrast i praeocular i s — Smith, Zoologica, 27: 99- 

 1945 Thamnoph i s eques praeocular i s — Bogert and Oliver, Bull. Amer. Mus. Nat. Hist., 83: 385- 



Distribution: Quintana Roo, Mexico, coastal British Honduras, and Lake Yojoa, Honduras. 



THAMNOPHIS PROXIMUS (Say) 



I823 Coluber prox imus Say, in James, Exped. Pittsburgh to Rocky Mts., 1: 335* Type-locality: Approxi 

 mately 3 "^ ' east northeast of Fort Calhoun, Washington Co., Nebraska, according to Rossman, 

 Bull. Florida St. Mus., ]: IO9. 



I892 Thamnoph i s prox i ma — Carman, Bull. Essex Inst., 24: IO5. 



1963 Thamnoph i s prox i mus — Rossman, Bull. Florida St. Mus., ]: IO9. 



Distribution: Central United States through eastern Mexico to central Costa Rica. 

 Content: Six subspecies, five of which are ex tral im i tal. 



Thamnoph i s prox imus rut i lor i s (Cope) 



188'j Eutaenia rutiloris Cope. Proc. Amer. Phil. Soc, 22: 388. Type-locality: Cozumel Island, 

 Quintana Roo, Mexico. 



1938 Thamnoph is saur i tus rut i lor i s — Smith, Occ. Pap. Mus. Zool. Univ. Mich., 388: 5. 

 1963 Thamnoph i s prox imus rut i lor i s — Rossman, Bull. Florida St. Mus., ]: I38. 



Distribution: Southern Tamaulipas, Mexico, to central Costa Rica, from sea level to 8000 ft; 

 occurs in Pacific lowlands only from vicinity of Acapulco, Guerrero, Mexico, south to 

 Isthmus of Tehuantepec; no records from highlands of Guatemala. 



