MAMMALS OP THE MEXICAN BOXJNDAKY. 281 



Subgenus PAKASCITJRUS Tronessart (1880). 

 FOX SQUIERELS. 



Parasoiurus Tbotjessart, Le Naturaliste, II, No. 37, October, 1880, p. 292 ; 

 Cat. Mam., Rodentia, p. 77, 1880 (in part). — Mebkiam, Proc. Biol. Soc. 

 Wasliington, VII, 1892, p. 27. — Nelson, Proc. Washington Acad. Sci., I, . 

 p. 30, April 14, 1899. (Revision of tlie Squirrels of Mexico and Central 

 America). — Millee and Rehn, Proc. Bost. Soc. Nat. Hist., XXX, No. 1, 

 December 27, 1901, p. 36 (Syst. Results Study N. Am. Mam. to close of 

 1900.)— Elliot, Field Col. Mus., Zool. Ser., II, 1901, p. 51 (Synop. Mam. 

 N. Am..) ; IV, 1904, p. 110 (Mam. Mid. Am.). 



Dentition.— 1. ^-j P. j^Ei; M. ^=20. 



Characters. — Size large; without ear-tufts; skull elongate, with a 

 long, broad rostrum, and broad nasals; brain case long, narrow, not 

 inflated over parietals and narrowed at occiput; interpterygoid fossa 

 long. 



SCIURUS RUFIVENTER TEXIANUS (Bachman). 

 TEXAS FOX SQTTISRFl. 



Sciurus texianus Bachman, Proc. Zool. Soc. London, 1838, p. 86 (or descr.). 

 Soiurus Umitis Baied, Proc. Acad. Nat. Sci. Phila., VII, April, 1855, p. 331 



(original description) ; Mam. N. Am., 1857, p. 256, pis. lxiv (animal) 



and Lxxxi (skull) ; Rep. U. S. Max. Bound. Surv., II, Pt. 2, Mam., 



1859, p. 34, pis., IV (animal) and xxi (sliull, 5 figures). 

 Sciurus niger var. Indomdanus, Allen, Mon. N. Am. Rodentia, 1877, pp. 



724-731 (southwest Texas and Nuevo Leon, Mexico). 

 Soiurus niger Umitis, Allen, Bull. Am. Mus. Nat. Hist, VI, 1894, p. 183 ; 



VIII, 1896, p. 67. 

 , ■ Soiurus ludovicianus Umitis, Nelson, Proc. Washington Acad. Sci., I, p. 97, 



pi. I, fig. 1, May 9, 1899 (Revision of the Squirrels of Mexico and Central 



America) ; Miller and Rehn, Proc. Bost. Soc. Nat. Hist., XXX. No. 1, 



Dec. 27, 1901, p. 36 (Syst. Results Study N. Am. Mam. to close of 1900). 

 [Sciurus ludovicianus] Umitis Elliot, Field Col. Mus., Zool. Ser., II, 1901, 



p. 53 (Synop. Mam. N. Am.). 

 Sciurus ruflventer texianus, Allen, Bull. Am. Mus. Nat. Hist., XVI, p. 167, 



July 1, 1902 ; Milleb and Rehn, Proc. Bost. Soc. Nat. Hist., XXXI, No. 



3, Aug. 27, 1903, p. 73 (Syst. Results Study N. Am. Mam. during the 



years 1901 and 1902). 

 ISdurus] ruflventer texensis, Elliot, Field Col. Mus., Zool. Ser., IV, Pt. 1, 



1904, p. 110 (Mam. Mid. Am.). 



• Type-locality. — Texas. 



Geographical range. — ^Wooded areas — mostly river bottoms — of 

 Southwestern Texas, east of the desert. 



Description. — Similar to typical Sciurus ruflventer (fig. 46), but 

 smaller and paler. Above yellowish gray, darkened by a very even 

 mixture of black bands and black tips to the hairs. Sides of head, 



