MAMMALS OF THE MEXTCAI? BOUNDARY. 281 



Subgenus PARASCIUKUS Trouessart ( 1880). 

 FOX saUIRRELS. 



Parat^ciiirKS Trouessart, Le Natnralisto. II, No. :>7, October. ISSO, p. 292; 

 Cat. Main., Rodeutia, p. 77, 1880 (in part). — Mekriam, Proc. Biol. See. 

 Wasliinston, VII. 1892. p. 27. — Nelson, Proc. Washinjiton Acad. Sci.. I, 

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

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

 December 27, 1901, p. 3G (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. JeJ; P. JeJ; M. |Ei=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 SQUIRREL. 



Sciuriis texianus Baciiman, Proc. Zool. Soc. London, 1838, p. 8G (or descr.). 

 Scinrus limitis Baird, Proc. Acad. Nat. Sci. Phila., VII, April, 1855, p. 331 



(original description) ; Mam. N. Am., 1857, p. 2.56, pis. lxiv (animal) 



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



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

 Scim-us iiigcr var. Jndovicianus, Allen, Mon. N. Am. Rodentla, 1877. pp. 



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

 Sciurus nigcr liiiutis. Allen, Bull. Am. Mus. Nat. Hist, VI, 1894, p. 183; 



VIII, 1896, p. r,7. 

 Sciurus ludovicianiis llniitis, Nelson, I'roc. 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). 

 [Sciuriift liitJovicianKs] Jijuitis Elliot, Field Col. Mus.. Zool. Ser.. II, 1901, 



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

 Sciurus ritfiventcr tcvianus, Allen, Bull. Am. Mus. Nat. Hist., XVI, p. 167, 



.July 1, 1902; Miller 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). 

 [Sciurus] rufiventer 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 Sciunis ruf renter (fig. 4G). 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, 



