and lieplihsfrom Argentina. 337 



less distinct black lateral sireak; fins uniform yellowish 

 white; female with a large, V-shaped, purplish-black marking, 

 edged with orange, on tlie belly, the point on the vent. 



Total length, S -iO inillim., ? 60. 



Numerous specimens from the liio Cruz del Eje, Prov. 

 Cordova, 600 m. 



4:. Percichthys triicha, C. & V.— Rio Mendoza, Palmira, 

 900 m. 



Batrachians. 



1. Bii/o arenariim, Hensel. — Palmira, 900 m., and Cruz del 



Eje, 600 m. 



2. Leptodactylus ocellatusy L. — Cruz del Eje. 



3. Paludicola Borelh'i, Peracca. — Mendoza, 900 m. 



Reptiles. 



1. Testudo argentina, Sclater. — Cruz del Eje. 



" Tortugas del Pampa." Live in the dry " Monte/' eating 

 cactus " Pinka." 



2. Ilomonota W/iitii\ Blgr. — Cruz del Eje. 



3. Urostrophus Vautieri, D. & B. — Cruz del Eje. 



4. Sciccodiia ornatissima, Gir. — Cruz del Eje. 



5. Saccodira pectinata^ D. & B. — Cruz del Eje. 



6. Tropiduriis hispidus, Spix. — Cruz del Eje. 



7. Tupinamhis rufescens, Gthr. — Cruz del Eje. 



8. Tehis tcyoii, Daud. — Cruz del Eje. 



9. Gymnophthalmus rubn'cauda, sp. n. 



Differs widely from the known species of the genus in 

 liaving the nasal shield divided and the scales in even 

 numbers. Frontonasal in contact with the frontal, separating 

 the pra?frontals ; frontal hexagonal, as long as the fronto- 

 nasal, much shorter than the interparietal, which is the 

 largest head-shield; two supraoculars, first largest; three 

 narrow supraciliaries; 7 upper labials, fourth longest and 

 bordering the eye ; an anterior azygous chin-shield, followed 

 by four pairs in contact on the median line. Scales smooth, 



Ann. & Mag. N. Hist. Ser. 7. Vol. is. 24 



