295 



TANTILLA 



TANTILLA JAM (Gunther) 



1895 Homalocran ium jani Gijnther, Biol. Centr. Amer. , Rept.: 148, pi. 'j2, fig. D. Type-locality: 



Guatemala and Nicaragua; restricted to Guatemala, by Smith, Zoologica, 2], 15*2, 37- 

 1342 Tantilla jani — Smith, Zoologica, 2/: 36. 



Distribution: Low and moderate elevations of Pacific coast from Isthmus of Tehuantepec, Mexico, to 

 Guatemala. 



TANTILLA LONG I FRONTAL IS Boulenger 



1896 Homalocran ium long i f rontale Boulenqer, Ann. Mag. Nat. Hist., (6) 17= 17- Type-locality: Gali, 



Colomb ia. 

 1929 Tantilla long if rental i s — Amaral, Mem. Inst. Butantan, 4: 220. 



Distribution: Eastern slopes of Andes, at lower altitudes, in Colombia and Ecuador. 



TANT ILLA MELANOCEPHALA (Linnaeus) 



1758 Coluber melanocephalus Linnaeus, Syst. Nat., Ed. 10: 218. Type-locality: "America". 

 1861 I Tantilla I melanocephala — Cope, Proc. Acad. Nat. Sc i . Phila., I86I: 74. 



Distribution: Central America through South America to northern Argentina. 



Content: Two subspecies. 



Key to the subspecies 



Tip of snout white; prefrontals contact 

 labials cap istrata 



Tip of snout dark brown; prefrontals and 

 labials not in contact melanocephala 



Clave de subespecies 



Punta del hocico blanca; prefrontales en 

 contacto con labiales cap istrata 



Punta del hocico pardo oscura; prefrontales 

 y labiales no contactan melanocephala 



Tant i 11a melanocephala melanocephala (Linnaeus) 



I887 Tant ilia pall ida Cope, Proc. Amer. Phil. Soc, 24: S6. Type-locality: Mato Grosso, Brazil. 

 I895 [ Homalocran ium melanocephalum j var. pernambucense Gunther, Biol. Centr. Amer., Reptiles: 



148. Type-locality; Pernambuco, Brazil. 

 1909 Homalocran i urn hof f mann i Werner, Mitt. Nat. Hist. Mus. Hamburg, 26; 239« Type-locality: 



Guatemala. 

 1914 Elapomorphus nuchalis Barbour, Proc. Biol. Soc. Washington, 27: I99. Type-locality: Villa Bella, 



Estado do Para, Brazil. 

 1943 Tant ilia melanocephala melanocephala — Schm idt and Walker, Zool. Ser. Field Mus. Nat, Hist., 



24: 3I8. 



Distribution: Central America throughout South America east of Andes, including northern 

 Argentina and Uruguay. 



Tant i 11a melanocephala cap i strata Cope 



1876 Tantilla capistrata Cope. Jour. Acad. Nat. Sc i . Phila., (2) 8 (I875): 181. Type- 

 locality: Valley of Jequetepeque (Libertad), Peru. 



1943 Tant i 11a melanocephala cap istrata — Schmidt and Walker, Zool. Ser. Field Mus. Nat. Hist., 

 24: 3I8. 



Distribution: Northern coastal Peru to arid valley of R'o Marafion; Catamayo and Malacatos 

 Valleys in southern Ecuador. 



