BIBDS OF NOBTH AND MIDDLE AMEBICA. 633 



Strix passerina (not of Linnseue) Wilson, Am. Om., iv, 1811, 66, pi. 34, fig. 1. 



(?) Stria: passerina Audubon, Orn. Biog., v, 1839, 269, pi. 432. 



S[tnx] passerina Bonaparte, Journ. Ac. Nat. Sci. Phila., iii, pt. ii, 1824, 355; 

 Obs. Wilson's Am. Om., 1826, [15]. 



(?) Noctua passerina Audubon, Synopsis, 1839, 22; Birds Am., oct. ed., i, 1840, 

 116, pi. 29. 



Noctua passerina Wrtus, An. Eep. Smithson. Inst, for 1858 (1859), 281 (Nova 

 Scotia). 



Ulula passerina Jameson, ed. Wilson's Am. Om., i, 1831, 109. 



St[rix] vnlsonii Boib, Isis, 1828, 315 (new name for iStrix passerina Wilson, pi. 34, 

 fig. 1). 



Strix dalhousd "Hall, Ms." Macgillivkay, ed. Cuvier's Efegne Anim., 1829, pi. 8. 



Strix frontalis Lichtenstein, Abh. Ak. Berlin, 1838 (1839), 430 (Monterey, Cali- 

 fornia; =young; coU. Berlin Mus.). — Baibd, in Rep. Stansbury's Surv. Great 

 Salt Lake, 1852, 372(Califomia). 



[A.ihene\frontalis Lichtenstein, Nom. Av. Mus. Berol., 1854, 8. 



Nyctale kirtlandii Hot, Proc. Ac. Nat. Sci. Phila., ti, 1852, 210, 211 (Racine, 

 Wisconsin; =young); vi, 1853, 307. — Cassin, Elustr. Birds Calif., Texas, 

 etc.. 1854, 63, pi. 11. 



Nyctala acadica scotssa Osgood, N. Am. Fauna, no. 21, Sept., 1901, 43 (Massett, 

 Queen Charlotte Islands, Brit. Columbia; coll. U. S. Nat. Mus.). — ^Ambeioan 

 Ornithologists' Union Committee, Auk, xix, 1902, 319. 



Cr^ptojZatM;aca(ficascoia5aGEiNNBLL(J.), Auk, xix, Jan.,1902, 93, intext(crit.). — 

 American Ornithologists' Union Committee, Auk, xxi, 1904, 413; Check 

 List, 3rd ed., 1910, 172 (Queen Charlotte Islands to Puget Sound).— Keb- 

 mode, Provincial Mus. Victoria, 1909, 46 (Queen Charlotte Islands). — 

 Jbwbtt, Auk, xxvii, 1910, 340 (Douglas Co., Oregon, 3 specs., summer). — 

 SwABTH, Univ. Calif. Pub. Zool., vii, 1911, 65 (Mitkof I., a. Alaska; crit.). 



Cryptoglaux acadica scotse Bowles, Auk, xxiii, 1906, 143 (Tacoma, Washington, 

 Oct. 19, 1904). 



Glavx acadicus scotssus American Ornithologists' Union Committee, Auk, 

 XXV, July, 1908, 372.— Dawson, Auk, xxv, 1908, 484 (Nisqually, Washing- 

 ton, Dec, 1906). 



CRYPTOGLAnX RIDGWAYI Alfero. 



COSTA RICAN SAW-WHET OWL. 



Young male. — Similar to the corresponduig stage of C. acadica but 

 latero-frontal region and general color of under wing-coverts wood 

 brown instead of white, and without any white on outer surface of 

 wings or on tail, and toes unfeathered (except basal half of the outer). 



Above plain warm sepia brown, or between sepia and seal brown, 

 inclining on hindneck to Vandyke or mummy brown, the tail darker 

 (between clove brown and seal brown), the remiges grayer brown 

 (between sepia and hair brown), narrowly edged with paler; no 

 trace of white markings on outer surface of wings, except a narrow 

 edging to outermost feather of alula, nor on tail; but inner webs of 

 innermost secondaries with irregular spots of dull whitish near the 

 margins; latero-frontal region wood brown; anterior portion of sub- 

 orbital region similar but rather paler, deepening on auricular region 

 into dark brown (rather darker than color of pileum); bristly 



