222 Bulletin American Museum of Natural History. [Vol. Ill, 



10. Sciurus aureogaster F. Cuv. Six specimens, as follows : 

 $ and ? ad., Tampico, Mex., June, 1888, Wm. B. Richardson ; 

 ? ad., Tampico, May 21, 1888, J. M. Priour ; $ ad., and ? juv., 



Valles, San Luis Potosi, May, 1888, Wm. B. Richardson ; ? ad., 

 Rio Corono, Tamaulipas, April 7, 1888, J. M. Priour. (These are 

 the specimens previously mentioned in this Bulletin II, p. 166, 

 and III, p. 181.) 



11. Sciurus deppei Peters. Four specimens, as follows : 2 

 6 ad., Victoria, Tamaulipas (alt. 5000 ft.), April 16 and May i, 

 1888, J. M. Priour ; $ ad., Valles, San Luis Potosi, May, 1888, 

 Wm. B. Richardson ; also one specimen without label. 



These specimens vary in the color of the upper surface from 

 olive-gray to rusty brown, and in the color of the lower surface 

 from pale buff to ochraceous buff. 



12. Sciurus arizouensis Coues. One specimen, skin and 

 skull, 9 ad., San Pedro Mines, Nuevo Leon, Mex., May 7, 1889, 

 J. M. Priour. Also one specimen, skin and skull, 6 juv., labeled 

 as from Brazoria Co., Texas, May 22, 1887, J. M. Priour; if this 

 locality is not erroneous, it carries the range of the species far to 

 the eastward of its previous known range, it not having been 

 previously reported in the United States from east of Arizona. 

 Mr. Priour's note-book shows that a squirrel was taken on this 

 date at this locality (about fifteen miles above the mouth of the 

 Brazos River, in Bee County). The skin, in all features of colo- 

 ration, resembles a common phase of the Southern Gray Squirrel 

 (Sciurus carolinensis], the species that would be naturally ex- 

 pected to occur in Bee County, but the skull lacks all trace of the 

 small premolar almost invariably present in this species, 



1 3. Sciurus hy popyrrhus Wagler ? In addition to the spe- 

 cimens of Sciurus above recorded are four skins without skulls, 

 all received, Mr. Sennett informs me, from Mr. Wm. B. Richardson, 

 but only one of them has a label, inscribed, in Mr. Sennett's 

 hand-writing, ** Tampico, Mexico, Richardson, 1888." They are 

 all intense glossy black throughout, of large size, with very long 

 heavy tails, and high pointed ears. They resemble a melanism 

 of .S. hypopyrrhus, but this species has not been reported from 

 north of the southern border of Mexico. In three of the speci- 



