Tsio. 2333. MAMMALIA COLLECTED IN PERU BY HELLER— THOMAS. 241 



between the two animals under discussion. The long head, especially 

 the long muzzle, and the small eyes, give the Microxus quite a dif- 

 ferent aspect to that of the Akodon with its blunt snout and normal 

 eyes, and I now feel no hesitation in considering them as belonging 

 to different genera. 



49, DASYPROCTA KALINOWSKII Thomas. 



Adult female, No. 194485, Pumachaca, Urubamba Valley, 5,000 

 feet. Taken by E. C. Erdis. 



The second known example of this striking species. The specimen 

 is in more faded pelage than the type, but agrees with it in all essen- 

 tial respects, though the yellow of the belly is rather less strongly 

 marked. 



[DASYPROCTA VARIEGATA (Tschudi).] 



[Three specimens in the British Museum from Callanga, Cuzco. 

 Nos. 98.11.6.10-12. O. Garlepp.] 



[LAGOSTOMUS CRASSUS Thomas.] 



[A skull, the type, in the British Museum from Santa Ana, Cuzco. 

 No. 97.10.3.16. J. Kalinowski.] 



Like the AbrocoTna described by Mr. Eaton, this Peruvian Viz- 

 cacha is no doubt now extinct. The skull was found buried in the 

 sand. 



50. VISCACCIA SATURATA Thomas. 



Seven specimens as follows : 



Ollantaytambo, 13,500-14,000 feet, 4 (Nos. 194466-9). 



Between Puquiura and Huadquiha, 14,000 feet, 3 (Nos. 194479, 

 194481,194483). 



The Puquiura Pass specimens agree absolutely with the typical 

 series of F. saturata^ while those from Ollantaytambo are a little 

 lighter, and tend to approach the palid form F. arequipae. 



51. VISCACCIA AREQUIPAE Thomas. 



One specimen, female, from La Eaya Pass, 14,000 feet (No. 

 194478). 



52. CAVIA TSCHUDII TSCHUDII Fitzinger. 



Three immature females from La Raya Pass, 14,000 feet (Nos. 

 194490-2). 



[Four specimens in the British Museum from Urubamba, Cuzco, 

 9,000 feet, Nos. 3.2.9.13-16. O. Garlepp.] 



The La Raya Pass specimens have grayish bellies, while those from 

 Urubamba are buffy below, but the former are all immature. 



181404— 21— Proc.N.M. vol.58 16 



