17 



Distribution: Misiones. In Brazil from Minas Gerais and Rio de Janeiro to Parana. Also in eastern Bolivia 

 and Paraguay (Giraudo, 1997). Paranaense province. 



Helicops Wagler, 1830 



Helicops Wagler, 1830. Nat. Syst. Amph. 170 



Tachynectes Fitzinger, 1843. Syst. Rept. 25. 



Uranops Fitzinger, 1843. Syst. Rept. 25. 

 Type species: Helicops carinicaudus (= Coluber carinicaudus Wied, 1825) by subsequent designation, 

 Fitzinger, 1843: 25. 



Comments: The two Argentinian taxa of the genus were raised to species level by Deiques & Cechin (1991); 

 however, the variability observed by Giraudo (1997) questions most of these authors' conclusions. 

 Nonetheless, we maintain the status assigned to them in the recent publications (Deiques & Cechin, 1991; 

 Cei, 1993; Williams & Scrocchi, 1994). 



Helicops infrataeniatus Jan, 1865 

 Helicops infrataeniatus Jan, 1865. Arch. Zool. Anat. Fisiol. 3: 253. 

 Helicops carinicaudus var. gastrosticta Jan, 1865. Arch. Zool. Anat. Fis. 3: 253. 

 Helicops trivittatus Cope, 1878. Proc. Amer. Philos. Soc. 17 (1877): 92. 

 Helicops baliogaster Cope, 1885. Proc. Amer, Philos. Soc. 22 (1884): 193. 

 Helicops pictiventris Werner, 1897. Sitz. Akad. Wiss. Munchen 1897: 208. 

 Helicops carinicauda var. infrataeniata Griffin, 1916. Mem. Carnegie Mus. 7: 179. 

 Helicops carinicauda infrataeniata Lema, 1958. Iheringia (zool.) (10): 19. 

 Helicops carinicaudus infrataeniatus Rossman, 1970. In Peters & Orejas-Miranda, Bull. U. S. 

 Nat. Mus. (297): 123. 



Helicops infrataeniatus Deiques & Cechin, 1991. Acta Biol. Leopoldensia 12 (2): 317. 

 Type locality: "Surinam" and "Brazile". 



Distribution: Individuals from Buenos Aires, Corrientes, Entre Rios and Misiones were examined. The 

 species was mentioned from Chaco, Formosa, and Santa Fe, but this requires confirmation. Also in Brazil, in 

 Santa Catarina and Rio Grande do Sul States, in Uruguay and southern Paraguay (Deiques & Cechin, 1991; 

 Lema, 1994; Williams & Scrocchi, 1994; Achaval & Olmos, 1997; Giraudo & Quaini, 1997). Paranaense 

 province and Chaquefia province (Chaquefio Oriental district). 



Helicops leopardinus (Schlegel, 1837) 

 Homalopsis leopardina Schlegel, 1837. Essai. Physiog. Serpens. 2: 358. 

 Helicops Leprieurii Dumeril, Bibron & Dumeril, 1854. Erp. Gen. 7: 750 

 Helicops leopardinus Jan, 1865. Arch. Zool. Anat. Fis. 3: 251. 

 Helicops leopardina Amaral, 1929. Mem. Inst. Butantan 4: 149. 



Helicops leopardinus Rossman, 1970. In Peters & Orejas-Miranda, Bull. U. S. Nat. Mus (297) I: 124. 

 Type locality: Unknown. 



Distribution: Buenos Aires, Corrientes, Chaco, Entre Ri'os, Formosa, Jujuy, Misiones, Salta and Santa Fe 

 (Koslowsky, 1898; Serie, 1936; Abalos & Mischis, 1975; Gallardo, 1986; Williams & Scrocchi, 1994; 

 Giraudo & Quaini, 1997). Wide distribution in South America, from Guianas to Argentina (Rossman 1970; 

 Hoogmoed, 1979, 1982), although the records for the Colombian Amazonia were based on individuals of 

 Helicops danieli (Yuki, 1994). Many northern records should be revised. Chaquefia province and transitional 

 areas with Paranaense province, always related to rivers, fioodlands and banados. Using aquatic enviroments 

 the species enters into Espinal province. 



Hydrodynastes Fitzinger 1843 



Hydrodynastes Fitzinger, 1843. Syst. Rept.: 25 



Lejosophis Jan, 1863. Arch. Zool. Anat. Fis. 2: 320 



Dugandia Dunn, 1944. Caldasia 3: 70. 

 Type species: Elaps schranckii Wagler, 1824 (= Hydrodynastes bicinctus Hermann, 1804) by original 

 designation. 



