146 Townsend — A New Eagle and a New Squirrel. 



ern States are larj^er tluiu tliose from Florida and Louisiana. In addi- 

 tion to the other differences in size, the bill of the Alaskan bird is wider, 

 while the edging to the feathers, especially on the wing coverts, is both 

 lighter and broader. The egg of the northern bird is distinctly larger, 

 the average of sixteen specimens being 7;!. 5 x 57.5 mm., while that of 

 forty-five Florida specimens is 69 x 53.5 mm. 



Sciurus hudsonius mearnsi new subspecies. 



Sclurus hudsonius califomicus Allen. Bull. Am. Mus. Nat. Hist., III., 1890, 

 pp. 165-167. 



This form is characterized by extreme pallor of coloration and by hav- 

 ing middle dorsal region tinged pale j'ellowish instead of reddish, as in 

 specimens from central and northern California. A general hoariness 

 pervades the entire upper surface ; under surface pure white, without 

 traces of annulation ; under fur light plumbeous throughout. These speci- 

 mens have a broad black lateral stripe. The ears are conspicuously tufted 

 with long black hairs, while the top of the head is pale grayish instead 

 of blackish, as in specimens from more northerly localities. Tail with 

 lateral hairs very broadly tipped with white ; median area of under side 

 whitish gray, of upper side yellowish gray; terminal third black, fringed 

 with white. Fore and hind feet yellowish white. One specimen (No. 

 18267, U. S. Nat. Mus.) has acquired the post-breeding pelage on the fore 

 but not on the hind feet, the new hair being buff-yellow instead of soiled 

 white. Specimens from the interior region of northern California are 

 much darker, with distinctly more reddish upper tinge and less hoari- 

 ness, while the under fur is decidedly darker plumbeous. Specimens of 

 S. hudsonius mogoUonensis and S. hridsonius fremond have a more general 

 reddish suffusion of the upper parts, and in winter much dusky vermicu- 

 lation of the under surfaces, while the feet are nearly black and the ear 

 tufts less pronounced. 



i8. hudsonitis mogoUonensis is considerably larger, the hind foot measuring 

 54 mm. in mogoUonaisis against 51 mm. in mearnsi; the skull 51 x 28.7 

 against 48.8 x 27.6. 



Ti/pe No. yff!i, U. S. Nat. Mus., from San Pedro Martir Mountains, 

 Lower California (altitude about 7,000 feet). Collected in May, 1889, by 

 C. H. Townsend. 



Named for Dr. Edgar A. Mearns, U. S. A., Naturalist of the Mexican 

 Boundary Commission of 1892-'94. 



