36 



Rhachidelus brazili Boulenger 1908 



Rhachidelus brazili Boulenger, 1908. Ann. Mag. Nat. Hist. (8)2: 31 

 Type locality: Near Sao Paulo, Brazil. 



Distribution: Southwestern Misiones. Also southern Brazil, from Sao Paulo to Rio Grande do Sul (Lema 

 1994). Paranaense (Campos district) 



Comments: The reference to Cordoba (Scrocchi & Monguillot, 1992) may represent an accidental 

 introduction. We prefer not to include this locality in this species' distribution until a voucher is available. 



Sibynomorphiis Fitzinger 1843 



Sibynomorphiis Fitzinger, 1843, Syst. Rept.: 27 



Anholodon Dumeril, Bibron & Dumeril, 1854, Erp. Gen., 7: 1165 



Cochliophagus Dumeril, Bibron & Dumeril, 1854, Erp. Gen., 7: 478 



Pseudopareas Boulenger, 1896, Cat. Sn. Brit. Mus. 3:462 

 Type species: Dipsas mikanii Schlegel, 1837, by original designation. 



Sibynomorphus lavillai Scrocchi, Porto & Rey, 1993 



Sibynomorphiis lavillai Scrocchi, Porto & Rey 1993, Rev. Brazil. Biol. 53 (2): 200-202. 



Type locality: 10 kilometers north of Joaquin V. Gonzalez and 14.7 kilometers east of the intersection 



between National Route 16 and Provincial Route 30. Anta Department. Salta. Argentina. 



Distribution: Chaco, Formosa, Jujuy, Salta and Santiago del Estero (Scrocchi et al, 1993; Lions & Alvarez, 



1996a). Chaquena province. 



Sibynomorphus mikani (Schlegel, 1837) 

 Dipsas mikanii Schlegel, 1837. Essai Phys. Serp. 2: 277. 

 Sibynomorphus mikanii Fitzinger, 1843. Syst. Rept.: 27. 

 Anholodon mikanii Dumeril & Bibron, 1854. Erp. gen. 7: 1 165. 

 Leptognathus mikanii Giinther, 1858. Cat. Snak. Brit. Mus.: 178. 

 Leptognatluis garmani Cope, 1887. Proc. Amer. Phil. Soc. 24: 60. 

 Leptognathus mikanii Boulenger, 1896. Cat. Snak. Brit. Mus. (nat. Hist.) 3: 453. 

 Sibynomorphus mikanii Amara\, 1929. Mems Inst. Butantdn 4: 198. 



Sibynomorphus mikani mikani Peters, 1960. Misc. Publ. Mus. Zool. Univ. Michigan 114: 148. 

 Type locality: Brazil 



Distribution: Misiones (Scrocchi et. al, 1993; Giraudo, 1997). From Tocantins to Santa Catarina in Brazil 

 (Franco 1994). 



Sibynomorphus turgidus (Cope, 1868) 

 Leptognathus tiirgida Cope, 1868, Proc. Acad. Nat. Sci. Philadelfia 1868: 136. 

 Tropidodipsas spilogaster Gr'iffm, 1915, Mem. Carnegie Mus. 7: 197. 



Sibynomorphus turgidus Amaral, 1926, Comm. Linh. Telegr. Estrat. M. Grosso ao Amazonas, 

 Sao Paulo, 84 anex 5, Hist. Nat. Zool.:5. 

 Type locality: Northern part of Paraguay River. 



Distribution: Northeastern Cordoba, Corrientes, Chaco, Entre Ri'os, Formosa, Jujuy, Misiones, Salta, 

 Santiago del Estero, Santa Fe and Tucuman (Abalos et al., 1964; Cabrera & Merlini, 1989; Scrocchi et al, 

 1993). Also in Bolivia, Paraguay, south of Mato Grosso in Brazil and Uruguay (Franco, 1994; Achaval & 

 Olmos, 1997; Giraudo & Quaini, 1997). Mainly Chaquena province, it enters the Paranaense province 

 through the Parana River; it also occurs in bordering areas of Espinal and Yungas provinces. 



Sibynomorphus ventrimaculatus (Boulenger 1885) 



Leptognathus ventrimaculatus Boulenger, 1885. Ann. Mag. Nat. Hist. (5) 16:87. 



Leptognathus intermedia Steindachner, 1903. Sitz. Math.-Naturwiss. Kl. Akad. Wiss. Wien 112: 16. 



Heterorhachis poecilolepis Amaral, 1923. Proc. New England Zool. Club 8: 85-105. 



Sibynomorphus ventrimaculatus Amaral, 1929. Mem. Inst. Butantan 4: 200. 

 Type locality: Sao Lorenzo, south embroider of Lagoa dos Patos, Rio Grande do Sul, Brazil. 



