CATALOGUE—MAMMALIA. 531 
ground, which is so much undermined by them that it gives way 
at almost every step. It is a timid little fellow, feeds upon grass, 
and is eaten by the Patagonian Indians.—See Bennet in the Pro- 
ceedings of the Zool. Soc. Dec. 22, 1835. A specimen is preserved 
in the Museum. 
10. Kerropa Kinait. n.s. 
See Bennet ut supra, in Museum of Zool. Soc. 
1]. Cavia Curuent, n.s. nob.—See Bennet ut supra. 
This specimen is in the collection of the Society. It was known 
in the voyage by the name of the Peruvian cavy: it was pre- 
sented to one of the officers of the Beagle by an American sailing 
master, Mr. Cutler, of Stonington, U.S.,a very intelligent person, 
to whom we are much indebted for information. The name which 
I have proposed for it is in recollection of the benefit we derived 
from his experience and knowledge of the intricate navigation of 
the south-western coast of Patagonia, which was freely imparted 
to us on several occasions.—See Bennet in Proceedings of Zool. 
Soc. ut supra. 
12. Dasyprocta Paracnonica.—Desm. E. M. 358. 
I regret very much that the only specimen obtained was 
not preserved. Desmaret seems to suspect that it differs suffi- 
ciently in its dentition from the agouti to constitute a new genus, 
for which he has proposed the name Dolichotis.—See E. M. 359. 
13. Dasyrus minutus.—Desm. 
Procured at Port S* Elena, and corresponds exactly with the 
description of the above species, It is the Tatou pichiy, or 
Tatou septiéme of D’Azara. 
14. AucHEnra Guama.—Desm. E. M. 655. 
A living female guanaco was brought home in the Adven- 
ture, and placed in the garden of the Zoological Society. The 
guanaco inhabits Patagonia from Buenos Ayres to the Strait of 
Magalhaens: we also found it on King Charles Foreland, the 
eastern island of Tierra del Fuego, and on Navarin Island, at the 
north side of Nassau Bay, in the vicinity of Cape Horn. 
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