282 U. S. P. R. R. EXP. AND SURVEYS ZOOLOGY GENERAL REPORT. 



SCIURUS CALIFORNICUS, Lesson. Hab. California. 



Scturua (Macroxua) californieus, LESSON, Desc. des Mamm. et d'Oiseaux, 1847, 143. 



"Size of the European squirrel. Ears not tufted. Tail flattened. A whitish ring around 

 the eye. Hairs on the head above dotted with brown on a vinaceous ground. Cheeks and 

 throat pale gray. Color above generally vinaceous gray, dotted with pale gray and black ; the 

 ground color more gray on the nape and neck, more rufous on the rump ; vinaceous rose on the 

 anterior and posterior limbs. The dotted gray of the back is cut by a straight white band 

 which extends on each side from the upper part of the shoulder to the chute des reins, before the 

 origin of the tail. Lower parts and flanks whitish. All the hairs of these parts are half black 

 and terminated with white only. Tail above white and black, white on the edge ; beneath, 

 white bordered and terminated with black. Each hair is white at base and tip, black in the 

 middle." 



This description, in many respects, agrees with Spermophilus beecheyi, especially in the whitish 

 stripe on the sides of the shoulders. If from Upper California, there is no other species to 

 which it can be referred. 



SCIURUS AUREOGASTER, F. Cuv. Hab. Mexico. 



Sdurus aureogaster, " F. Cuv. Mammif. Ill, livraison 59." 



WAGNER, Suppl. Schreb. Ill, 1843, 165. 



GEOFF. Voy. de la Venus, Zoo). 1855, 136; pi. x, xi. 

 Sdurus leucogaster, F. Cuv. Suppl. Buffon, I, Mammif. 1831, 300. (Ecureuil de la Californie.) 



Above, mixed white and black, or yellowish ; beneath, golden yellow. Length, 10 inches ; 

 tail, 8 inches. 



According to Geoffroy, this squirrel \\ as collected at Monterey, by the French frigate the 

 Venus; none of our collections from this locality, however, give any indication of such a species. 



SCIURUS PYLADII, Lesson. Hab. Realejo, Mexico. 



Sdurus (Macroxus) pyladii, LESSON, Desc. Mamm. et Oiseaux, 1847, 142. 



SCIURUS VARIEGATUS, Erxleben. Hab. Mex'co. 



Sdurus variegalut, RXLEBEN, Syst. 1777, 421. 



FISCHER, Synopsis, 1829, 352. 

 SCHINZ, Syn. II, 1845, 17. 



Above, varied with black, rufous, and orange; beneath, rufous orange; occiput black. Snout 

 and ears white. Length, one foot. 



SCIURUS HYPOPYRRHUS, Wagler. Hab. Mexico. 



"Seiurttt hypojnjrrhus, WAGLER, Isis, 1831, 510." 



" WAGNER, Miinchn. Gel. Anz. VII, 20." 



Above, mixed black and dirty yellow; beneath, ferruginous ; ears and feet black; tail longer 

 than the body, uniform in color with the back ; the hairs of only two colors. 

 Length, 12 inches; tail vertebrae, 12^; tail with the hairs, 14^. 



