VOL. XIV. PP. 131-132 AUGUST 9, 1901 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF TWO NEW SQUIRRELS 

 FROM MEXICO. 



BY E. W. NELSON. 



Sciurus yucatanensis baliolus* new subspecies. Campeche Squirrel. 



Type No. 107,039, $ ad., U. S. National Museum, Biological Survey 

 Collection, from Apazote, Campeche, Mexico, collected January 8, 1901, 

 by E. A. Goldman. 



Distribution. Southern Campeche and eastern Tabasco (north of the 

 Usumacinta River) Mexico. 



Subspecific characters. Differs from typical Sciurus yucatanensis from 

 northern Yucatan in much darker color above and below. Upperparts 

 dark blackish gray with a dull buffy suffusion; outside of fore feet and 

 legs black, finely grizzled with dull buffy or gray; top of hind feet 

 black; underparts dark iron gray; tail black thinly washed with gray. 



Skull. Practically same as in typical form. 



Dimensions of type. Total length 464; tail vertebrae 238; hind foot 59. 



Remark)!. Typical 8. yucatanensis lives in the arid region of northern 

 Yucatan and Campeche while the present subspecies inhabits the much 

 more humid forests of southern Campeche and adjacent border of Ta 

 basco and will doubtless be found also in southern Yucatan where simi 

 lar climatic conditions prevail. 



Sciurus deppei vivaxf new subspecies. Zapote Squirrel. 



Type No. 107,932, 9 ad., U. S. National Museum, Biological Survey 

 Collection, from Apazote, Campeche, Mexico. Collected January 8, 

 1901, by E. A. Goldman. 



*Baliolus=dark, swarthy. 

 fVivax=lively. 



24 BIOL. soc. WASH. VOL. XIV, 1901. (131) 



