MAMMALS OF THE MEXICAN BOUNDARY. 



327 



CITELLUS TRIDECEMLINEATUS TEXENSIS Merriam. 

 TEXAS THIRTEEN-LINED GROUND-SaUIRREL, 



Spermophilus trideceiiilineutustexensis Merriam, Prt^o. JBiol. >Suc. Washington, XII, 



p. 71, Mar. 2-4, 1898 (original dest-ription). — Miller and Rehn, Proc. Bost. 



Nat. Hist., XXX, No. 1, Dec. 27, 1901, p. 56 (Syst. Resultg Study N. Am. 



Mam. to close of 1900). 

 ^Spermophilus tridecemlinentus'] texettsis, Elliot, Field Col. ^Ins., Zoul. Ser., II, 



1901, p. 101. (Synop. Mam. N. Am.) 



Type-h)vaVity. — Gainesville, Cooke County, Texas. (Type, skin and 

 skull, No. Wxk^ collection of Dr. C. Hart Merriam.) 



GcographJeal range. — Lower Austral zone in southern Texas. 



The original description of CiteJJux tridecemJineatw< fea'enftlH reads 

 as follows: 



Characters.— 'tixmWAV to S. terelicaudas, but smaller; ground color of upper parts, 

 including base of tail, redder; middle stripe of underside of tail uniform dee}) 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. 



< olor. — Winter petage: Ground 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 light 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. J. M. Priour. observes: " In coloration they 

 are not distinguishable from Minnesota examples.'" 



Fig. 50. — Citellus tridecemlineatus. Fort SneTI-ling, Minnesot.4. (Cat. No. 87212, T'.S.N.M.) 

 a. Dorsal view: h. Ventral view. 



The following description of 8. trideceinlhieatusii^ based on specimens 

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



«Bull. Am. Mus. Nat. Hist., Ill, No. 2, April 29, 1891, ]>. 22:5. 



