Od a collection of Batradiiaos made by Prof. CllARLKS SPEGAZZINI at Colonia Rcsis- 

 tencia, Sontli Chaco, Argentine Republic. By g. a. boulenger- 



{Plate II) 



The following is a list of the species of frogs represented in 

 a small collection formed by Prof C. Spegazzini at Colonia 

 Resistencia and sent by him to the ^Marquis Doria who has 

 kindly entrusted me with its examination. The characters of 

 the Batrachian fauna of tliat North-Eastern part of the Argen- 

 tine Republic is, as could be expected, essentially that of Para- 

 guay and Matto-Grosso, with which Steindachner (S. B. Zool. 

 bot. Ges. Wien, 1864, p. 239), Boettger (Zeitschr. f Naturw. 

 LVIII. 1885, pp. 213, 436), and Cope (Proc. Amer. Philos. Soc. 

 XXIV. 1887, p. 44) have made us acquainted. Yet, three species, 

 belonging to the genus Ilula, appear to be undescribed. 



Engystomatidae. 



1. Phryniscus nigricans, Wiegm. 



Gystignathiclae. 



2. Pseudis limellum, Cope. 



3. Paludicola fuscomaculata, Stdr. 



4. Paludicola biligonigera, Cope. 



5. Paludicola falcipes. Hens. 



