PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM, 109 



dency toward the rufous phase; all the markings, however, are as iu the 

 grayish birds. The measuremeuts of these specimens are as follows : — 



Nicasio, Marin Couuty, Cal 



do 



Sacramento, Cal 



San Pedro River, Arizona . 



Mount Carmel, S. Ill 



Fairfax Couuty, Virginia. . 

 District of Columbia 



Mar. 2,1877 



Mar. 2, 1877 

 June 21, 1867 



Oct. 4, 1873 



Oct. 7, 1876 



Nov. 4, 1876 



Dec. 7, 1874 



6..^0 

 6.60 

 6.70 

 6.60 

 6.40 

 6.50 

 6.35 



3.50 

 3.65 

 3.60 

 3.70 

 3.50 

 3.70 

 3.25 



Three specimens iu the rufous phase, also in my collection, measure 

 as follows : — 



Mount Carmel, 111 . . . 

 do 



District of Columbia 



May 1,1869 5.90 3.20 

 July 30, 1870 6. 00 3 00 

 Nov. 8, 1860 6. 50 I 3. 60 



The first of these specimens inclines very decidedly, both in measure- 

 ments and plumage, to var. Jioridanus ; and, in view of the fact that 

 typical specimens of Ortyx virginiamis Jioridanus, Tinnunculus sparve- 

 rius isahellinufi, and other Southern forms occur in the same locality, 

 may be perhaps best referred to that form. 



/3. maccalli. 



Scojjs McCaUii, Cass., Illustr. B. Cal. Tex. &c. July, 1854, 180 (Texas ; Northern Mexico) ; 



in Baird's B. N. Am. 1858, 52; ib. ed. 1860, pi. xxxix (part). — Baikd, Mex. 



Bound. Survey. II, pt. iv, Birds, 1859, pi. 1; Cat. N.Am. B. Ib58, no. CO.— 



Strickl., Oru. Syn, I, 1855, 200.— Scl. & Salv., Ibis, 1859, 220.— Gray, Hand-1. 



I, 1869, 47. 

 "Scops trkhopsis", Grav, Hand-1. I, 1869, 47 (Sharpe).— Scl. & Salv., Norn. 1873, 117 



(Mexico; Guatemala). 

 Scops asio var. enano, "Lawr.", Ridgw., Bull. Essex Inst. V, Dec. 1873, 200 (E. Mexico; 



Guatemala); in B. B. & R., Hist. N. Am. B. Ill, 1874, 48 (do.). 

 Scops enano, Bouc, Cat. Av. 1876, 91 (Mexico). 

 Scops asio, subsp. y. Scops enano, Sharpe, Cat. Strig. Brit. Mus. 1875, 118 (Mexico; 



TV. Mexico).' 



Habitat. — Eastern and Northern Mexico; Guatemala; Texas (Cctssm). 



Diagnosis.— Wing, 5.60-5.90; .tail, S.lO-S.ot); culmen, .45-.50; tar- 

 sus, 1.00-1.15; middle toe, .70-.75. Gray phase {adult). — Similar to the 

 gray adult of S. cassini, but toes bristled, the occipital collar nearly 

 obsolete, and the nuchal collar less distinct. Red phase (adult).* — 

 Above dull rusty, much broken across the nape by a collar of pale ochra- 

 ceous spots, the whole surface elsewhere being also more or less mortled 

 with paler rusty than the ground-color, and relieved by ragged mesial 

 streaks of black. Lower parts pale rufous, each feather crossed near 

 the end by a wide white bar, and with two to three narrow, somewhat 

 irregular lines of blackish. 



Young. \ — Above brownish-gray, transversely mottled with darker 

 and paler, and tcithout dusky shaft-streaks. Below grayish-white, with 



* DueBas, Guatemala. In Mus. Stlviu & Godman. 

 t Coban, Vera Paz. In Mus. Salvin «fc Godman. 



