110 Mcrriam — Neir lunu/iirno Rrds. 



facial crescents heavier; nose blacker. Cranial characters nni- 

 (jue. 



Color. — Upper parts clay-color, lined with dark-tipped hairs on head and 

 back, becoming pale ochraceous buft"on tlanks; thigh patches large ; facial 

 crescents broad and indistinctl}' continuous to end of nose which is broadly 

 blackish ; inner side of legs dusky ; dorsal and ventral tail stripes barely 

 meeting in front of white pencil, the white lateral stripes being almost con- 

 tinuous to the white tip ; ventral dark stripe pale ; dorsal dark stripe pale 

 for proximal f, becoming blackish on crested part; white pencil rather 

 short, measuring about 23 mm. beyond the tips of the black hairs in the 

 two specimens at hand. 



Crfinial cJk traders. — Skull small for the size of the animal; rather 

 highly arched on top as in D. phill'qm ; supraoccipital between mas- 

 toid bulla; broader than in any other known species; interparietal 

 nearly as broad as long ; ascending branches of jiremaxiUic broad and 

 slightly expanded posteriorly ; nasals somewhat narrowed posteriorly; 

 top of skull broad but not broad enough to hi<le zygomatic arches, whicrli 

 are far apart ; sides of frontals sloping strongly inward from point slightly 

 anterior to plane of fronto- parietal suture ; nasals decidely longer than 

 frontal breadth immediately behind lachrymals. Mandible small for size 

 of skull; angle large and pointed. Upper premolar an incomplete!}' double 

 prism, its crown with a well developed antero-internal lobe. 



Dipodomys ornatus sp. nov. 



Tij\n from Berriozabal, Zacatec.\-!, Mexico. No. 57,990 9 ^^- U. S. 

 Nat. Mas. Department of Agricultural Collection. Collected December 

 29, 1893 by E. A. Goldman. (Original number 5,613.) 



Measurement.'; (taken in flesh). — Tf/pe : Total length 274 ; tail vertebra? 167 ; 

 hind foot 39. Ear irom anterior base 15 (in dry skin). 



General character.'^. — Similar to DipcxJomy-s pltlUipxi in size and 

 pattern of markings hut brighter and more golden in color; 

 dark markings more extensive and blacker, ears somewhat larger ; 

 hind foot shorter ; tail crested penicillate, its tip white. 



Color. — Upper parts bright golden clay-color, darkest on head and 

 median back, brightest on sides ; thigh patches large; facial crescents large, 

 broad, and very black, meeting broadly over bridge of nose which is solid 

 black for A the distance from nostrils to eye except a small white spot over 

 extreme end of nose ; narrow ring round eye, inner sides of hind legs, and 

 dorsal and ventral tail stripes black ; tip of tail pure white. The white side 

 stripes of the tail disappear near the junction of the distal and miildle thirds, 

 the black .stripes uniting in a broad belt anterior to the white pencil. The 

 face is mainly white between the eye and facial crescent, though the white 

 is somewhat oUscured, particularly near the eye, by dark-tipped hairs. 



Cranial characters. — .Skull similar to that of D. phUUpsl in general size and 

 form, but propcntions difierent. Mandible larger and heavier with much 

 longer and broader angular processes. The basal length and mastoip 



