232 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.58. 



Five specimens, as follows: 

 La Eaya Pass, 14,000 feet, 2 (Nos. 194691-2). 

 [Lauramarca, Cuzco, 2 (Nos. 3.2.9. 8-9, B. M.), O. Garlepp.] 

 [Sucre, Cuzco, 1 (No. 3.2.9.11, B. M.), O. Garlepp.] 

 The specimens in the Heller collection, like most of those from 

 La Eaya Pass, are without skulls, but are clearly the same as the 

 Cuzco examples collected by Garlepp, which I have long thought 

 might be distinguishable from Hesperomys carillus. Undoubtedly 

 the two forms are very similar, but the uniformly greater hairiness 

 of the soles of the Cuzco series would seem to justify subspecific 

 distinction. 



36. EUNEOMYS (AULISCOMYS) PICTUS Thomas. 



Forty-two specimens, as follows: 



Huaracondo, 11,000 feet, 7 (Nos. 194515-6, 194518, 194520, 194526, 

 194717, 194777). 



Ollantaytambo, Ocobamba Pass, 13,000 feet, 18 (Nos. 194527-9, 

 194538, 194706-9, 194774, 194977-9, 194980-6). 



La Eaya Pass, 14,000 feet, 16 (Nos. 194533-4, 194539, 194543, 

 194546, 194966-76 . 



This is a common and widely spread species in the highlands of 

 Peru. In size and in the developmjent of the ochraceous or tawny 

 tints of the posterior body there is a very great difference between 

 young adults and old adults; and on this account I confess to being 

 somewhat doubtful of the difference from E. pictus of Osgood's 

 '■'' Phyllotis {Auliscomys) decoloratus^''^ from Puno, which is said to 

 be distinguished by its smaller size and less strongly colored rump. 

 The British Museum contains examples from two of the three locali- 

 ties mentioned by Osgood for decoloratus^ and these are quite similar 

 to normal E. pictus in every respect. 



37. RHIPIDOMYS LEUCODACTYLUS Tschudi. 



Ten specimens, as follows: 



Machu Picchu, 6,000 feet, 1 (No. 194493). 



Eio San Miguel, 4,500 feet, 4 (Nos. 194498-500, 195097). 



Santa Ana, 3,000 feet, 1 (No. 194501). 



[Ocobamba, Cuzco, 2, Nos. 98.11.6.19-20, B. M., O. Garlepp.] 



[Marcapata, Cuzco, 2, Nos. 3.2.9.6-7, B. M., O. Garlepp.] 



Quite agreeing with Garlepp's specimens from Ocobamba and 

 Marcapata, Cuzco, which after seeing the type in Neuchatel, I have 

 taken for B. leucodactylus, and equally distinct from the larger B 

 lucullus of Vitoc. 



1 Field Mus. Nat. Hist. Publ., vol. 10, p. 191, 1915. 



