Cavies of the Genus Caviella. 447 
Burmeister’s Cavia leucoblephara, with locality “ Mendoza 
to ‘Tucuman,” might have been thought to be this animal, 
instead of a Galea, as hitherto supposed, as the Caviella has 
an even better-marked supraorbital line than the Galea. But 
he has fortunately made the matter clear by recording that the 
lacrymal bone “ perce complétement l’apophyse zygomatique 
de la machoire supérieure ’’—a formation characteristic of 
Galea, as Mr. Osgood has shown, and not found in Caviella. 
Some of the specimens he saw in Mendoza may have been 
Caviella, but the described example was undoubtedly a 
Galea. 
Caviella australis menas, Thos. 
Cavia menas, Thos. 1898. 
Size slightly larger than the previous forms. Colour 
tending towards buffy. 
Muzzle not tapering forwards, the nasals parallel-sided. 
Incisors not or scarcely visible from above in front of nasals. 
Palatal foramina as in joannia, or even longer. Hinder edge 
of palate forming an angle in the centre which is less than a 
right angle—75° in the type. Bulle fairly large. 
A skull from Tinogasta measures: occipito-nasal length 
50°5 mm.; occipito-incisive length 50°5 ; nasals, length 17-4, 
breadth anteriorly 7, posteriorly 6°7; interorbital breadth 12°5; 
leneth of bulla 14:5. 
Range. N. Rioja and Southern Catamarea. Type from 
Chilecito, Rioja, and series seen from Tinogasta and Chum- 
bicha, Catamarca. 
Caviella australis salinia, sp. n. 
_ Rather more robust than the last. Colour pure drab, 
without tendency to buffy. 
Skull stout and strong. Muzzle long, not tapering, the 
nasals broad, parallel-sided. Premaxillee not pushed forwards, 
the incisors rarely visible from above. Incisive angle about 
88°. Interorbital region broad. Palatal foramina long and 
narrow. Posterior edge of palate forming in the centre a 
very wide open angle, equalling or even exceeding a right 
angle—92° in the type. Bulle large. 
Type-skull: occipito-nasal length 53:7 mm. 3 occipito- 
incisive length 55°5 ; nasals, length 18:3 ; breadth at middle 
of anterior half 8°2, posteriorly 8°5 ; interorbital breadth 13:1; 
length of bulla 16°5. 
Hab. Salina country, at the extreme south-east of Cata- 
marca, ‘Typical series from Recreo. 
