232 



OXYRHOPUS 



OXYRHOPUS FORMOSUS (Wied) 



1820 Coluber formosus Wied. Nova Acta Acad. Leop. Carol., 10 (l): IO5. Type-locality: Lagoa d'Arara, 



Rio Mucuri, Bahia, Brazil. 

 1824 Natr ix occ ipi tal is Wagler, in Spix, Sp. Nov. Serp. Bras.: 21, pi. 6, fig. 2. Type-locality: Rio 



Sol imoes, Braz i 1. 

 I854 Oxyrhopus leucocephalus Dumeril, Bibron and Dumeril, Erp. Gen., 7' IO38. Type-locality: 



Unknown. 

 I863 Cf xyrhopus ] lab ial is Jan, Elenco Sist. Ofidi: 53> ^"d Jan and Sordell i, I87O, Icon. Gen. 



Opbidiens, Livr. 35= Pl- 2, fig. 2, Type-locality: South America. 



1871 Oxyrhopus submarq inatus Peters, Monats. Akad. Wiss. Berlin, I87I: 401. Type-locality: Pozuzu, 



Peru. 



1516 Clelia peruviana Griffin, Mem. Carnegie Mus., 7' 204. Type-locality: Tarma, Peru. 



1927 Oxyrhopus iridescens Werner. Sitz. Math. -Naturw iss. Kl. Acad. Wiss. Wien, 135= 248. Type- 

 locality: Huancibamba, Peru. 



Distribution: Forested South America north of about 20°S latitude. 



Comment: This is obviously a complex of forms, and much more material than is presently available 

 will be required to study it satisfactorily. The eastern Brazilian and the westernmost Peruvian 

 material, along with a few other specimens, retain the characteristic orange head and banded 

 pattern throughout life with only some darkening of the crown. Most of the specimens from the 

 Amazon watershed and Colombia lose the dark bands with maturity, and the head behind the snout 

 darkens to resemble closely unhanded specimens of Oxyrhopus melanogenvs . with which these specimens 

 have usually been confused. 



OXYRHOPUS LEUCOMELAS (Werner), new combination 

 dol iatus group 



1516 Trop i dod i psas leucomelas Werner, Zool. Anz., 47: JO'). Type-locality: CaSon de Tolima, Colombia. 

 1561 Tr ipanurqos leucomelas — Downs, Copeia, I56I : 3^6, fig. 1. 



Distribution: Amazonian slopes of Ecuador and Peru; headwater areas of Cauca and Magdalena river 

 valleys. 



OXYRHOPUS MARCAPATAE (Soulenger), new combination 

 doliatus group 



1502 Homalocran ium marcapatae Boulenger, Ann. Mag. Mat. Hist., (7) 10: 401. Type-locality: Marcapata 



Valley, eastern Peru. 

 1914 Drepanodon eaton i Ruthven, in Barbour, Proc. Acad. Nat. Sc i , Phila., 1913= 5^6. Type-locality: 



Machu Picchu, Peru. 



Distribution: Marcapata and Urubamba valleys in Peruvian highlands. 



OXYRHOPUS MELANOGENYS (Tschudi) 

 melanogenys group 



■ 184'5 Sphenocephalus melanoqenys Tschudi, Arch fur Naturg., 11 (l): I63. Type-locality: Peru; further 

 specified as Chanchamayo region, Peru, by Tschudi, Fauna Peruana, Rept., 1846, 49, pl. 4. 



1872 Tachymen is b i torquata Gijnther, Ann. Mag. Nat. Hist., (4) 9= 19' Type-locality: Peruvian Amazon. 

 I896 Oxyrhopus melanoqenys — Boulenger, Cat. Sn, Brit. Mus., J: IO5. 



Distribution: Amazonian watershed of Bolivia, Peru, Brazil and Ecuador. 



OXYRHOPUS PETOLA (Linnaeus) 

 petola group 



1758 Coluber petola Linnaeus, Systema Naturae, Ed. 10: 22$. Type-locality: Africa. 



1896 [Ox yrrhopus J Petola — Lonnberg, Bihang till K. Svenska Vet. -Akad. Handlingar, 22 (4): 7. 



Distribution: Mexico through Central America to northwestern Ecuador west of Andes and to Amazonian 

 Bolivia and Brazil east of Andes. 



Content: Three subspecies. 



