35 



Pseudotomodon Koslowsky 1896 

 Pseudotomodon Koslowsky, 1896. Rev. Mus. La Plata VII: 454. 



Pseudotomodon Peracca, 1897. Bol. Mus. Zool. Anat. Comp. Univ. Torino 12 (278): 1. 

 Type species: Pseudotomodon mendozinus (= Pelias trigonatus Leybold, 1873) by monotypy. 



Pseudotomodon trigonatus (Leybold, 1873) 

 Pelias trigonatus Leybold, 1873. Excursion a las Pampas Arjentinas, Hojas de mi diario: 82. 

 Tomodon ocellatus Boulenger, 1896 (partim). Cat. Snakes Brit. Mus. Nat Hist. 3:121. 

 Pseudotomodon mendozinus Koslowsky, 1896. Rev. Mus. La Plata 7: 455. 



Pseudotomodon Crivellii Peracca, 1897. Bol. Mus. Zool. Anat. Comp. R. Univ. Torino 12 (278): 1. 

 Pseudotomodon trigonatus Serie, 1936. Inst. Mus. Univ. La Plata, Obra Cincuentenario: 49. 

 Tomodon ocellatus trigonatus Abalos, Baez & Nader, 1964. Acta Zool. Lilloana 20: 253. 

 Pseudotomodon trigonatus Bailey, 1970. In Peters & Orejas-Miranda, Bull. U. S. Nat. Mus. 

 297 (1): 256. 



Type locality: Estancia Los Aguirre, Departamento San Carlos, Mendoza, Argentina. 

 Distribution: Cordoba, Chubut, La Pampa, La Rioja, Mendoza, Neuquen, 



Rio Negro, San Juan, San Luis and Santiago del Estero (Orrego Aravena, 1971; Avila, 1997; Tiranti & Avila, 

 1997). According to Williams & Francini (1991), the species' presence in Catamarca needs to be confirmed. 

 Mainly in Monte province, but also in Chaquena province (Serrano district), in "Sierras" of Cordoba, and in 

 southern Buenos Aires in border areas of Espinal province. 



Psomophis Myers & Cadle, 1994 



Psomophis Myers & Cadle, 1994. Am. Mus. Nov. 3102: 6 

 Type species: Rhadinaea obtusa Cope, 1863. By original designation. 



Psomophis genimaculatus (Boettger, 1885) 



Dromicus lineatus Dumeril, Bibron & Dumeril 1854. Erp. Gen. 7(1): 



Liophis (Lygophis) genimaculata Boettger, 1885. Z. Naturwiss. 58: 213-248. 



Rhadinaea genimaculata Boulenger, 1894. Cat. Sn. Brit. Mus. (Nat. Hist.) 2: 170-171. 



Liophis joberti Hoge, 1958 {partim). Pap. Avulsos, Dept. Zool. Sec. Agr. S. Paulo 13 (17): 222-223. 



Psomophis genimaculatus Myers & Cadle, 1994. Am. Mus. Nov. 3102: 16. 

 Type locality: Paraguay 



Distribution: Salta, Formosa and Corrientes (Scrocchi & Giraudo 1997; Lions & Alvarez, 1997). Also in 

 Bolivia, Paraguay and Mato Grosso do Sul, Brazil (Myers & Cadle, 1994). Chaqueiia province. 

 Comments: Distributions of both Argentinian species overlap in the vicinity of Resistencia city (Chaco) and 

 Corrientes city (Corrientes) (Scrocchi & Giraudo, 1997). Earlier studies mentioned Chaco, Misiones and 

 Santa Fe (Koslowsky, 1898; Serie, 1921, 1936), but there are no voucher specimens from these locations. 



Psomophis obtusus (Cope, 1863) 



Rhadinaea obtusa Cope, 1863. Proc. Acad. Nat. Sci. Philad. 15: 101. 



Enicognathus sp. MuUer, 1882 [1880]. Verh. Naturf. Ges. Basel 7 (1):144. 



Coronella obtusa Boulenger, 1885. Ann. Mag. Nat. Hist., ser. 5, 15 (87): 194. 



Liophis obtusus Amaral, 1929. Mem. Inst. Butantan4: 89. 



Psomophis obtusus Myers & Cadle, 1994. Am. Mus. Nov. 3102: 23. 

 Type locality: Paysandu, Uruguay 



Distribution: In the provinces of the Parana River basin: Corrientes, Chaco, Santa Fe, Entre Ri'os, reaching 

 Buenos Aires (Scrocchi & Giraudo, 1997; Giraudo & Quaini, 1997). Also in southern Paraguay, southern 

 Brazil (Rio Grande do Sul) and Uruguay (Myers & Cadle, 1994; Achaval & Olmos. 1997). Chaquena. 

 Espinal and Pampeana provinces. 



Rhachidclus Boulenger 1908 



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

 Type species: Rhachidclus brazili Boulenger 1908, by monotypy. 



