127 



REPTILlA: SERPENTES: COLUBRIDAE "^ "^ "^ HYDRODYNASTES 



HYDRODYNASTES Fitzinger 



1843 Hydrodynastes Fitzinger, Systema Reptilium: 25. Type-species: Elaps Schrank i i Wagler. 

 I863 Le iosoph i s Jan, Arch. Zool. Anat. Fis., 2: 320. Type-species: Coluber b i c i nctus Herrmann. 

 1544 Duqand ia Dunn, Caldasia, 3' 7^- Type-species: Coluber b ic i nctus Herrmann. 



Distribution: As for single known species. 



Content: One species. 



HYDRODYNASTES BICINCTUS (Herrmann) 



1804 Coluber b ic i nctus Herrmann, Observat i ones Zoologicae; 2/6. Type-locality: none given. 

 1958 Hydrodynastes b ic i nctus — Hoge, Pap. Avul. Depto. Zool. Sao Paulo, I3: 222, 



Distribution: Guianas; Amazonian region of Brazil, Colombia and Venezuela. 



Content: Two subspecies. 



Key to the subspecies Clave de subespecies 



1. First dorsal blotch enlarged; belly 1. Primera mancha dorsal agrandada; vientre 



checkered with black and white schul tz i salpicado en negro y bianco schultz i 



First dorsal blotch not enlarged; black Primera mancha dorsal no agrandada; manchas 



spots on belly arranged in cross bars negras del vientre ordenadas en barras 



b i c i nctus transversas b ic i nctus 



Hydrodynastes b ic i nctus b i c i nctus (Herrmann) 



1824 Elaps Schrank i i Wagler, in Spix, Sp. Nov. Serp. Bras.: 1, pi. 1. Type-locality: Rio Japura, 



Brazil. 

 1566 Hydrodynastes b ic i nctus b ic i nctus — Hoge, Ciencia e Cultura, Sao Paulo, 18: 143. 



Distribution; Uncertain, not defined by Hoge. 



Hydrodynastes b ic i nctus schultz i Hoge 



1966 Hydrodynastes bic i nctus Schultz i Hoge, Citncia e Cultura, Sao Paulo, 18: I43. Type-locality: 

 President! Epitacio, Estado de Sao Paulo, Brazil. 



Distribution: Uncertain, not defined by Hoge. 



