MAMMALS OF THE MEXICAN BOUNDARY. 281 



Subgenus PARASCIURUS Trouessart (1880). 

 FOX SQUIRRELS. 



Parasciurus Tbouessaet, Le Naturaliste, II. No. '■'<!. October, 1880, p. 292; 

 Cat. Main., Rodentia. p. 77. 1SXO (in part). — Merriam, Proc. Biol. Soc. 

 Washington, VII, 1892, p. 27. -Nelson, Proc. Washington Acad. S<i.. I. 

 l>. .".»». April II. 1899. (Revision <>c the Squirrels of Mexico and Central 

 America ». — Milleb and Rehn, Proc. Bost. See. Nat. Hist., XXX. No. l. 

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

 L900.) — Elliot, Field Col. Mus., Zool. Ser., 11. L901, p. 51 (Synop. Mam. 

 X. Am.. I : IV. 1904, p. 110 (Mam. Mid. Am. i. 



Dtnflfn.n. -I. J-Ej; P. l ~\; 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 SOAHRREL. 



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

 Sciurus limitis Baird, Proc. Acad. Xat. Sei. Phila., VII. April. 1855, p. ."..".1 



(original description); Mam. X. Am., 1857, p. 256, pis. i.xiv (animal) 



and lxxxi (skull): Rep. I'. S. Mex. Bound. Surv., II. Pt. 2. Mam.. 



1859, p. 34, pis. iv (animal) and xxi (skull, 5 figures). 

 Sciurus niger var. ludovicianus, Allen, Men. X. Am. Rodentia, 1S77, pp. 



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

 Sciurus niger limitis, Allen, Bull. Am. Mus. Xat. Hist., VI, 1894, p. 183; 



VIII. 1896, p. '17. 

 Sciurus ludovicianus limitis. Nelson, Proc. Washington Acad. Sci., I. p. '-'7. 



pi. i. fix. 1. May P. 1899 ( Revision of the Squirrels <>f Mexico and Central 



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



Dec. 27, 1901, p. :'.<'. (Syst. Results Study X. Am. Mam. to close of 1900). 

 [Sciurus ludovicianus] limitis Elliot. Field Col. Mus.. Zool. Ser.. II. L901, 



p. 53 l Synop. Mam. X. Am.). 

 Sciurus rufiventer texianus, Allen, Bull. Am. Mus. Xat. Hist.. XVI, p. 167, 



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



.".. Aug. 27. 1903, p. 7. - '. (Syst. Results Study X. Am. Mam. during the 



years 1901 and 1902). 

 [Sciurus] rufiventer texensis, Elliot, Field Col. Mas.. Zool. Ser., IV. Pt. 1. 



1904, p. 11<> (Mam. Mid. Am. i. 



Type-locality. — Texas. 



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

 Southwestern Texas, east of the desert. 



Description. — Similar to typical Sciurus rufiventer (fig. t6), bul 

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

 mixture of black hands and black tips to the hairs. Sides of head. 



