new Neotropical Muridae. 361 



ences between M. Jelski's Peruvian specimens and Gay's 

 description merely in consideration of their similarity in 

 colour. 



The Peruvian species having been fully described, I need 

 only now point out that it differs from Gay's Central Chilian 

 one by its much longer tail, the body-length being less, and by 

 its longer palatine foramina, Gay's figure showing these but 

 little longer than the molar series, while in A. Jelskii they are 

 almost twice as long (see body and skull measurements, I. c). 

 Besides these differences there may be many others, as Gay's 

 description, although not very short, deals chiefly with cha- 

 racters which are of generic or family rather than specific 

 value. 



Hab. Junin, Central Peru. Coll. C. Jelski, 1872. 



Type : the figured skin, B.M. No. 85.4.1.44. 



Acodon Jelskii pyrrhotis, subsp. n. 



Hesperomys (Habrothrix) scales, Thos. I. c. partim (specimens h and *, 

 from Maraynioc). 



While the Junin specimens of A. Jelskii (see above) all 

 precisely agree with the type specimen figured in the original 

 paper in having their ears only partly rufous, the outer 

 surface especially being greyish brown, in having their tails 

 dark brown above (at least terminally) and pale rufous yellow- 

 laterally and below, and in having their digits whitish as 

 compared to the rich rufous metapodials, the Maraynioc ones 

 have the whole of their ears, inside and outside, the whole of 

 their tails, above and below, and the whole of their feet, 

 metatarsals and phalanges, uniform rich chestnut-rufous. 

 These differences appear to be of sufficient importance and 

 constancy to demand recognition by name, at least sub- 

 specifically. 



Dimensions as given for specimen h (1. c.) . 



Hob. Maraynioc, Central Peru. Coll. C. Jelski. 



Type'. Specimen t, which has now been skinned out of 

 spirit. B.M. 94.10.7.4. 



Acodon punctulatuS) sp. n. 



Size about the same as A. Jelskii. Fur much shorter and 

 crisper than is usual in Acodon, that of the back about 7 millim. 

 in length. General colour finely punctulated grey and yellow, 

 the resulting tone on the back when viewed from a distance 

 not far from Kidgway's " raw umber," greyest on the anterior 

 back, and lightening on the cheeks, sides of neck, flanks, 

 and sides of rump to " tawny olive," or perhaps rather more 



