MAMMALS OF THE MEXICAN BOUNDARY 



32' 



ClTELLUS TRIDECEMLINEATUS TEXENSIS Merriam. 

 TEXAS THIRTEEN-LINED GROUND-SaUIRREL. 



SpermopkUus tridecemlineatus texensis Merriam, Proc. Biol. Soc. Washington, XII, 



]>. 71, Mar. 24, 1898 (original description). M n i.ki; and Rehn, Proc. Bost. 



Nat. Hist., XXX. No. 1, Dec. 27, L901, p. 56 (Syst. \U -suits Study X. Am. 



Mam. to close of 1900). 

 {SpermophUus tridecemlineaVus] texensis, Elliot, Field Col. Mas.. Zool. Ser., II. 



11)01, p. 101. (Synop. Mam. X. Am. ) 



Type-locality. Gainesville, Cooke County, Texas. (Type, skin and 

 skull. No. l\\], collection of Dr. ( !. Hart Merriam.) 



Geographical range. Lower Austral /one in southern Texas. 



The original description of Citellus tridecemlineatus texensis reads 

 as follows: 



Characters. — Similar to S. tereticaudus, Out smaller; ground color of upper parts, 

 including base of tail, redder; middle stripe of underside of tail uniform deep reddish, 

 not grizzled with black; no yellowish-olive tinge in any pelage and less seasonal 

 difference in color than in any of the other forms. 



( blor. — Winter pelage: < rround color of upper parts, including base of tail, rich deep 

 ferruginous or rusty, slightly grizzled with black hairs; nose grayish, slightly griz- 

 zled with rusty; sides of neck, feet, and underparts buffy; head marblings, dorsal 

 stripes and spots, chin and lips buffy-white; rusty underside of tail sometimes partly 

 hidden by buffy tips. Summer pelage: Similar to winter- pelage, but ground color 

 duller and lijjht stripes and spots more buffy. (Proc. Biol. Soc. Washington, XII, 

 p. 71.) 



Remarks. — Dr. J. A. Allen," referring to specimens collected in Bee 

 County, Texas, by Mr. .1. M. Priour, observes: " In coloration they 

 are not distinguishable from Minnesota examples.** 



Fig. 50. — Citellus tridecemlineatus. Fort Snelling, Minnesota. (Cat. No. 37212, U.S.N.M.) 

 a, Dorsal view; /». Ventral view. 



The following description of S. tridt <■< mlin< atus is based on specimens 

 collected by the writer at Fort Snelling, Minnesota: bize rather large. 



"Hull. Am. Mus. Xat. Ili-t.. III. No. 2, April 29, 1891, p. I'l':!. 



