BOIUBIDiE— SPEUMOPUILUS. 



825 



S. grammurus is well known to the residents about Camp Bowie, Ariz., "for 

 its depredations on the hen-coops, its aim being the eggs, which it was often 

 successful in carrying off".* . , 



SYNOPSIS OF THE SUBOEMERA, 8PE0IK8, AND VARIETIES OF 8PERH0PHILUS. 



I. Form Sclnrine ; skull broid inter- and snteorbitally ; fint npper premolar imall, leu or not mora 



than one-fonrth the site of ths aecond ; molan relatively email ; edge of enter vail of tba 

 anteorbital foramina not thickened; ooronoid prooeaeea of lower Jaw long and slen- 

 der; eara very large; toil long, full, and bnsby (two-tbirds of the length of head and 

 body) OT08PERMOPHILU8. 



1. Body finely mottled above with yellowish-brown and black ; beneath pale yellowish-brown ; tail 



below yellowish-brown, with three loogitndioal bands of black, lesa distinct above. Runs 

 oooasionally into melanistio phases oiuHHunus. 



a. General color above mixed black and white, rather lighter on the anterior half of the dorsal 



snrface, and more brownish posteriorly ; not d' tinetly whiter on the sides of the shoulders, 

 nor darker medially on thu nape and anterior portion of the back. Habitat, Colorado, 

 southward into Mexico, and westward to the Sierra Nevada Mountains var. grammvniH. 



6. An indistinct broad hoary or grayish-white band on the sides, extending from the bead to 

 beyond the shonldeia, and sometimes reaching the hips, narrowing posteriorly, broad 

 anteriorly, and sometimes nearly meeting above on the nape. Habitat, Sontbem Cali- 

 ibmla var. heeckegi. 



c Similar to the last, bnt with the hoary patches separated on the nape and over the shonlders 

 by a band of dork brown, varying to nearly black. Habitat, Northern California and 

 Western Oregon var. doii^IaMi. 



II. Ska J abruptly narrowed interorbitolly ; lygomatio arches heavy and spreading, transversely flat- 



tened ; mnzile narrow ; first prsniolar large, about one-third to one-half the size of the sec- 

 ond ; tail generally narrow and short, with the hairs one-fonrth to one^third the length of 

 the head aod boily ; form rather thick and stont; ears small, often a mere rim, nearly con- 

 cealed by the pelage C0L0B0TI8. 



2. Size large ; abovemixed black, white, and yellowish-brown, the white chiefly in crowded snbqnad- 



rate spots; npper surface of the head obestnnt ; beneath jnsty-white ; tail rather short, but 



fhll and bnsby ; ears quite small smpbtRa. 



0. Strongly mfons below and on the sides ; back varied with black, brown, and white. Hab- 

 itat, Barren Oronnds of Arctic America var. empelra, 



b. Above grayer ; sides and beneath gray, generally with very little or no fnlvons ; tail shorter 



and more bushy. Habitat, Kodiak Island (and Peninsula of Aliaskaf) var. kodiaceiuii. 



«. Bmaller und darker, the light spots more fulvous, and the tail and ears relatively longer. 

 Habitat, British Colnmbii, southward into Washington Territory var. erflhngltUoHi. 



3. Smaller ; above pale yellowish-brown, varying to pale rufous, mixed mote or less with black, 



with generally an indistinct mottling of yellowish-gray niCHABDSONi. 



a. Above light yellowish-browD, varied with dusky, and generally faintly mottled with very 

 small indistinct light spots ; tail gray above, varied with black, brownish-yellow below, 

 with a partly concealed bar of black near the end, and edged both above and below 

 with- yellowish-white. Habitat, Plains of the Saskatchewan, southward to Northern 

 Dakota var. rickardMai, 



t. Bmaller than the lost, with larger ears, and much darker coloration ; tail mostly black above, 

 edged with white; below with a broad snbterminal bar.of black, and another narrower 

 basal one. Habitat, northern portion of the United States, from Dakota westward to the 

 Plains of the Columbia, southward to the Laramie Plains, northward Into British Co- 

 lumbia vor. tmcnimdU 



4. Sice small ; ears obsolete ; tail very short ; above finely and uniformly variegated pale yellowish- 



brown and dusky, without spots; below gray, faintly washed with creamy-yellow. Hab- 

 itat, Northern Utah and westward molus. 



* Rep. Wheehr's Expl. and Snrv. West of th« lOtHh Merid. vol. v, Zo5l. p. ISN. 



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