169 



LEPTOTYPHLOPS 



LEPTOTYPHLOPS DIMIDIATUS (jan) 

 dulc i s group 



1861 Stenostoma dimidiatum Jan, Arch. Zool. Anat. Fis., 1: 188. Type-locality: Brazil; herewith 



restricted to Sao Marcos, near confluence of Rios Uriracuera and Tacutu, both tributaries of 

 Rio Branco, Territorio de Roraima, Brazil. 



1529 Leptotyphlops dim i diata — Amaral . Mem. Inst. Butantan, i: 76. 



1567 LeptotyphloDS d i m i diatus — Ore jas-M i randa , Atas Simp. Biota Amaz., 5= '^33- 



Distribution: Guianas, northern Brazil and southeastern Venezuela. 



LEPTOTYPHLOPS DUGANDl Dunn 

 dulc i s group 



1544 Leptotvphlops duqandi Dunn, Caldasia, 3 (ll): 52. Type-locality: Juanamina, 20 m, about 11 kci 

 SW of Barranqu i 11a, Departamento Atlantico, Colombia. 



Distribution: Known only from type locality. 



LEPTOTYPHLOPS GOUDOTI I (Dumeril and Bibron) 

 alb i frons group 



1844 Stenostoma Goudoti i Dumeril and Bibron, Erp. Gen., 6: 330. Type-locality: Valley of R'o 



Magdalena, Colombia. 

 1857 Stenostoma fallax_ Peters, Monats. Akad. Wiss. Berlin, 1857: 402. Type-locality: La Guaira, 



Venezuela. 

 1925 Leptotvphlops goudoti i — Amaral, Mem. Inst. Butantan, 4: 139- 



Distribution: Colima on Pacific coast and Tehuantepec on Atlantic coast of Mexico throughout 

 Central America; Caribbean Colombia and Venezuela; many offshore islands. 



Content: Five subspecies, one of which ( bakewell i Oliver) is extral im i tal. 



Key to the subspecies 



Rostral normal, does not extend dorsally 

 beyond line connecting eyes; prefrontal 

 present 2 



Rostral elongated dorsally, extending 

 beyond line drawn between eyes; prefrontal 

 absent ater 



2. Light caudal spot about equal in size dor- 



sally and ventrally 3 



Light caudal spot at least twice as large 

 ventrally than dorsally phenops 



3. With strongly contrasting pattern; dorsal 



spot on head usually very conspicuous and 

 large; total length/diameter 13-58; total 



dorsal scales 233-253 maqnamaculatus 



Weakly contrasting dorsal pattern; dorsal 

 spot on head, if present, usually Incon- 

 spicuous and small; total lenqth/d iameter 

 56-66; total dorsals 217-248 (less than 

 230 In Panama) qoudot i i 



Clave de subespecles 



1. Rostral normal, que en su desarrollo dorsal 



no sobrepasa el nivel de una linea que 

 pasara por detras de los ojos; prefrontal 



presente 2 



Rostral prolongada, que en su desarrollo 

 dorsal sobrepasa el nivel de una I'nea que 

 pasara por detras de los ojos; sin pre- 

 frontal ater 



2. Mancha clara caudal de semejante superficie 



dorso y ventralmente 3 



Mancha clara caudal por lo menos dos veces 

 mayor ventral que dorsalmente phenops 



3. Disefio de v'vido contraste, mancha dorso 



cefalica generalmente muy conspicua y 

 grande; relacion longitud total diametro 

 43-58; dorsales totales 233-253 



maqnamacula tus 



Diseno de poco contraste; mancha dorso 

 cefalica, si existe, generalmente poco 

 consp'cua y pequena; relacion longitud to- 

 tal diametro %-(>(>•, dorsales totales 217- 

 248 (menos de 23O en Panama) Qoudot I I 



Leptotyphlops qoudot I I qoudot i i (Dum«ril and Bibron), new combination 



1952 Leptotyphlops albifrons marqar I tae Roze, Mem. Soc. Cien. Nat. La Salle, Venezuela, 12: 

 154, figs. 6-7. Type-locality: San Francisco de Macanao, Isla Margarita, Venezuela. 



Distribution: Panama and Colombia to Caribbean coast of Venezuela; Trinidad, Bonaire and 

 Margar i ta I slands. 



368-492 O — 70- 



