Merriam. — N'eio Pocket Mice ^rom Mexico. 45 



Color. — Upperparts gray, rather finely grizzled with a mixture of dark 

 hairs, pale fulvous, and the white of the basal part of the hairs which 

 shows through; lateral line absent or indistinct and confined to flanks; 

 underparts and feet white; tail sharply bicolor; above blackish, below 

 white except at tip which is dark all round; ears conspicuously edged 

 and broadly tipped with whitish. 



Cranial characters. — Skull large and massive, the frontal region broad 

 and flat; parietal broadly oval; nasals truncate posteriorly. Similar in 

 general to alleni but larger and heavier and very much broader between 

 orbits. 



Measurements. — Type: total length 276; tail vertebras 138; hind foot 

 34. 



Liomys torridus sp. nov. 



Type from Cuicatlan, Oaxaca, Mexico. No. 69,645 9 ad., U. S. Na- 

 tional Museum, Biological Survey Collection. Collected October 14, 

 1894 by E. W. Nelson and E. A. Goldman. Original No. 6904. 



Characters. — Size small; color gray; ears medium and only indistinctly 

 edged with white; tail longer than head and body, bicolor, well haired; 

 hind feet small (28 mm.). Hind foot with 5 pads. Contrasted with Li- 

 omys albolimbatus and alleni it is decidedly smaller, with much smaller 

 hind feet, much less distinct ear edgings, and whitish forelegs [in both 

 the others the forelegs are gray or dusky on outer side] . 



Color. — Upperparts gray, grizzled with black on top of head and back, 

 forming a dark saddle on the gray; lateral line usually indistinct; un- 

 derparts, forelegs, and fore and hind feet whitish; tail dark above, whit- 

 ish below except at tip which is dark all round. 



Cranial characters. — Skull small but rather heavy; zygomata rather 

 broadly and squarely spreading; interparietal narrowly elongate-oval; 

 nasals truncate or slightly emarginate. Easily distinguished from albo- 

 limbatus, which inhabits the same region, by its much smaller size, 

 smaller teeth, and truncate nasals. 



Measurements. — Type specimen: total length 242; tail vertebrae 134; 

 hind foot 28. 



Liomys torridus minor subsp. nov. 



Type from Huajuapam, Oaxaca, Mexico. No. 70,301 9 ad., U. S. 

 National Museum, Biological Survey Collection. Collected November 

 18, 1894 by E. W. Nelson and E. A. Goldman. Original No. 7061. 



Characters.— SimU&r to torridus but even smaller, with smaller ears, 

 and shorter feet and tail; color more uniform grizzled gray, the back 

 lacking the dark saddle; skull smaller; braincase more arched; inter- 

 parietal more broadly oval; base of rostrum broader; bullae smaller and 

 more smoothly rounded. 



Measurements.— Type specimen: total length 222; tail vertebrae 125; 

 hind foot 27. 



