10 



consequently we consider valid the presence of Apostolepis assimilis in Argentina, although supported by 

 only one specimen. 



Apostolepis dimidiata (Jan, 1862) 



Elapomorphiis (Elapomojus) dimidiatiis Jan, 1862. Arch. Zool. Anat. Fisiol. Torino 2 (I): 47. 



Elapomorphus erythronotus Peters, 1880. Monats. Akad. Wiss. Berlin. 1880: 222. 



Apostolepis erythronotus lineatus Cope, 1887. Proc. Amer. Philos. Soc. 24: 56. 



Etapomoius dimidiatus Boulenger, 1896. Cat. Snakes Brit. Mus. Nat. Hist. 3: 238. 



Apostolepis nigriceps Werner, 1897. Sitz. Akad. Wiss. Munchen 1897: 207. 



Elapomojus dimidiatus Peters & Orejas-Miranda, 1970. Bull. U.S. Nat. Mus. 297 (I): 103. 



Apostolepis barrioi Lema, 1978. Com. Mus. Ci. PUCRGS 18/19: 30. 



Apostolepis villaricae Lema, 1978. Com. Mus. Ci. PUCRGS 18/19: 32. 



Apostolepis ventrimaculatus Lema, 1978. Com. Mus. Ci. PUCRGS 18/19: 34. 



Apostolepis dimidiata Lcmdi, 1983-84. Mem. Inst. Butantan 47/48: 78. 

 Type locality: "Brazil" 



Distribution: Corrientes and Misiones (see Comments). Southern and eastern Paraguay and Brazil reaching 

 Mato Grosso do Sul and northern San Pablo (Ferrarezzi, 1993a). Paranaense province and transitional areas 

 with Chaquena province (Campos district). 



Comments: This species has been previously mentioned in Corrientes, Chaco, Formosa and Misiones; 

 however its presence needs confirmation (Williams & Francini, 1991). All the individuals in Argentinian 

 collections are from southern Misiones and northeastern Corrientes (Giraudo & Scrocchi, 1998). 



Apostolepis quirogai Giraudo & Scrocchi, 1998. 



Apostolepis quirogai Giraudo & Scrocchi, 1998. Herpetologica 54 (4): 470. 

 Type locality: Posadas, Misiones, Argentina. 



Distribution: Known only from the type locality, in the Campos district (transition between Chaquefia and 

 Paranaense provinces). 



Atractus Wagler, 1828 



Atractus Wagler, 1828. Isis Von Oken 21: 741-742 



Urobrachys Fitzinger, 1843. Syst. Rept. 24. 



Isoscelis Gunther 1858. Cat. Sn. Brit. Mus.: 204 



Atractopsis Despax, 1910. Bull. Mus. Hist. Nat. Paris, 16:372 

 Type species: Atractus trilineatus Wagler, 1828, by monotypy. 



Atractus canedii Scrocchi & Cei 1991 



Atractus canedii Scrocchi & Cei, 1991. Boll. Mus. reg. Sci. nat. Torino 9 (1): 205 - 208. 

 Type locality: Departamento Anta, between Anta and J. V. Gonzalez, Salta, and San Salvador de Jujuy, 

 Jujuy, Argentina. 



Distribution: Salta and Jujuy, Argentina (Scrocchi & Cei, 1991; Couturier, 1998). Chaquefia and Yungas 

 provinces. 



Atractus paraguayensis Werner 1924 



Atractus paraguayensis Werner, 1924. Sitz. Akad. Wiss. Wien. 133 (1): 40. 



Atractus reticulatus paraguayensis Amaral, 1930. Mem. Inst. Butantan 4 (1929): 27. 



Atractus paraguayensis Femandes, 1995. Com. Mus. Cienc. PUCRS, ser. zool. 8: 38. 

 Type locality: Paraguay 



Distribution: Northwestern Corrientes, Argentina and southern Paraguay (see comments). Chaquena 

 province (Chaco Oriental district). 



Comments: Until a few years ago, only the holotype (which did not have a precise locality) was known. 

 Recently, two individuals from Pilar, Departamento Neembucu, Paraguay, were collected, and another was 

 found in a collection from Palmar Grande, Corrientes (Giraudo & Scrocchi, 2000). 



