Osgood — Thirty Aeiv Mice of the Gcviii^ Peromyscns. 75 



spot, sliorter, less hairy tail, and in the followiiiu; cranial characters: 

 Parietals larger and wider, with suggestions of a head at orhital edges; 

 hraincase more inflated ; infraorhital plate much narrower ; audital huUoe 

 smaller; teeth smaller. It resembles p'wa<e??ia/e?isissuperficiall5', but is so 

 dtH'idedly smaller as to require no serious comparison with that species. 



Subgenus Haplomylomys Osgood. 

 Peromyscus goldmani so. nov. 



Ty]>e from Alamos, Sonora, Mexico. Adult female, No. 96,340, U. S. 

 National Museum, Biological Survey Collection, December 19, 1898, E. A. 

 Goldman. 



Characters. — Similar in general to P. eremicus anthonyl ; size larger (h ind 

 foot 24 in type) ; pelage somewhat coarser; color more fulvous and more 

 uniform; heel slightly hairy; tail long and cylindrical, covered with 

 short hairs; skull relatively heavy and rather elongate. 



Color. — Entire upper parts and sides ochraceous butf finely mixed with 

 black, mui-h darker and richer than in anthonyi and without the grayish 

 cast usually so characteristic of the eremicri.s group; under parts creamy 

 white with a small ochraceous buff pectoral spot. 



SkiilL — Larger, longer, and narrower than in eremicus or anthonyi ; bi'ain- 

 case relatively much narrower; nasals longer an'd more compressed pos- 

 teriorly ; interorbital constriction narrow ; bony palate rather short. 



Measurements.— 'TyTpe: Total length, 217 ; tail vertebrte, 117 ; hind foot, 

 24. Skull of type : Greatest length, 27.3 ; basilar length of Hensel, 21.1 ; 

 zygomatic width, 14.2; interorbital constriction, 4 ; interparietal, 8.6 x 

 3.2; nasals, 9.(); bony palate, 4.2; palatine slits, 5 x 2.1; diastema, fi.«i; 

 postpalatal length, 10 ; upper molar series, 4. 



Jlemarks. — The color of this species is more like that of P. splcllegus 

 than F. e. anthonyi, but its skull and teeth show it to be a member of the 

 eremicus group. 



Peromyscus eremicus phseurus subsp. nov. 



Ti/}>e from Hacienda La Parada, San Luis Potosi, Mexico. Adult 

 female. No. 50,438, U. S. National Museum, Biological Survey Collection, 

 August 20, 1892, E. W. Nelson. 



Geographic distribution. — Middle i)ortion of the Mexican tableland in 

 the States of San Luis Potosi, Zacatecas, and Nuevo Leon. 



General characters.— Sim\\a,v to F. eremicus but darker, with tail uniform 

 blackish brown above and below instead of decidedly bicolor as in 

 eremicus or indistinctly bicolor as in some specimens of P. e. antliovyi. 



T'o^o/'.— Similar in general to eremicus, but shades of buff deei)er and 

 entire upper parts much more heavily mixed with black ; under parts 

 except tail white: pectoral spot not present; tail blackish brown above 

 and Itelow, this most evident in winter pelage, when the hairiness of the 

 tail is best developed ; feet white, ankles dusky. 



