27 



Lystrophis pulcher (Jan, 1863) 



Heterodon pulcher Jan 1863. Arch. Zool. Anat. Fisiol. 2:222. 



Lystrophis semicinctus Boulenger 1894. Cat. Snakes Brit. Mus. 2:153 (partim). 



Lystrophis pulcher Scrocchi & Cruz, 1993. Papeis Avulsos Zool. 38 (10): 178. 

 Type locality: Bolivia. 



Distribution: Catamarca, Chaco, Cordoba, Corrientes, Entre Rios, Formosa, Jujuy, Salta, San Luis, Santiago 

 del Estero, Santa Fe and Tucuman. Also in eastern Bolivia and southern Paraguay (Scrocchi & Cruz, 1993; 

 Tiranti & Avila, 1997). Mainly in Chaquena province, with records in Espinal. 



Comments: Recently revalidated (Scrocchi & Cruz, 1993), formerly confused with Lystrophis semicinctus. 



Lystrophis semicinctus (Dumeril, Bibron & Dumeril, 1854) 



Heterodon semi-cinctus Dumeril, Bibron & Dumeril 1854 Erp. Gen. 1:11A. 



Heterodon pulcher San, 1863 (partim). Arch. Zool. Anat. Phys. II: 224. 



Lystrophis semicinctus Boulenger, Cat. Snakes Brit. Mus. Nat. Hist. 2:153. 



Lystrophis semicinctus weiseri Miiller, 1928. Zool. Anz. 77: 72. 

 Type locality: Buenos- Ayres et a Santa-Cruz. 



Distribution: Buenos Aires, Catamarca, Cordoba, Chubut, Entre Ri'os, La Pampa, La Rioja, Mendoza, 

 Neuquen, Rio Negro, San Luis and Tucuman. Also in western Bolivia (Scrocchi & Cruz, 1993). Monte, 

 Espinal, Pampeana and Patagonica provinces. 



Comments: Formerly, authors considered a greater distribution because of the confusion with L. pulcher. 



Mastigodryas Amaral 1934 



Eudryas Fitzinger, 1843. Syst. Rept.: 26. Preoccupied by Eudryas Boisduval 1836. 



Mastigodryas Amaral, 1934. Mem. Inst. Butantan 8 (1933-34): 157. 



Dryadophis Stuart, 1939 (substitutive name to Eudryas Fitzinger), Copeia 1939: 55. 

 Type species: Mastigodryas danieli Amaral. 



Mastigodryas bifossatus bifossatus (Raddi, 1820) 

 Coluber bifossatus Raddi, 1820. Mem. Soc. Italiana Sci. Modena 18: 333. 



Coluber capistratus Lichtenstein, 1823. Verzeichniss der Doubletten des Zoologischen Museums 



der Konigl. Universitat zu Berlin: 104. 

 Coluber Lichtensteinii Wied, 1825. Nova Acta Acad. Leop. Carol., 12 (2): 493. 

 Coluber pantherinus (no Daudin) Schlegel, 1837. Essai Physion. Serpens, 2: 143, pi. 5, figs. 13-14. 

 Dryadophis bifossatus bifossatus Stuart, 1941 Misc. Publ. Mus. Zool. Univ. Mich., 49: 39, pi. 2, fig. 5. 

 Mastigodryas bifossatus bifossatus Peters & Orejas Miranda, 1970. Bull. U. S. Nat. Mus. 297 I: 192. 

 Type locality: Rio de Janeiro, Brazil. 



Distribution: Eastern Chaco, Corrientes and Misiones (Giraudo, 1997). Also in Brazil from Rio Grande do 

 Sul to Rio de Janeiro (Stuart, 1941). Associated to Paranaense province. 



Comments: Mentioned in Uruguay by Stuart (1941), Achaval & Olmos (1997) do not include the species in 

 their list. 



Mastigodryas bifossatus triseriatus (Amaral, 1931) 



Dzymobius bifossatus triseriatus Amaral, 1931. Bull. Antiven. Amer. 4: 86. 



Dryadophis bifossatus triseriatus Stuart, 1941. Misc. Publ. Mus. Zool. Univ. Michigan 49: 43. 



Mastigodryas bifossatus triseriatus Peters & Orejas Miranda, 1970. Bull. U. S. Nat. Mus. 297 I: 192. 

 Type locality: Taunay, Mato Grosso (now Mato Grosso do Sul). Brazil. 



Distribution: Corrientes, Chaco, Entre Ri'os, Jujuy, Formosa, Salta and Santa Fe (Giraudo, 1997). Center, 

 northeastern and south of Brazil, Bolivia and Paraguay (Talbot, 1979; Lema, 1994). Chaquefia (Chaqueiio 

 Oriental district) and Yungas provinces. 



Comments: M. b. bifossatus and M. b. triseriatus overlap broadly in the transitional areas between Chaquena 

 (Oriental district) and Paranaense provinces in western and southern Misiones, north Corrientes and eastern 

 Formosa and Chaco. In this area, specimens exist with intermediate characters as well specimens easily 

 assignable to the two subspecies. 



