Vol. XXI 
roa ] Thirteenth Supplement to the A. O. U. Check-List. 413 
Cryptoglaux RicHMoND, Auk, XVIII, April, 1901, 193. 
Type, Strix tengmalmi GMELIN. 
Nos. 371, 372, and 372@ will thus stand as 
371. Cryptoglaux tengmalmi richardsoni (Bonaparte). 
Q76¢ 
( 
372. Cryptoglaux acadica (GMELIN). 
7 
3720. Cryptoglaux acadica scotzea (Oscoop). 
454a. Myiarchus cinerascens nuttingi (Ripcway). The 
specimens recorded from Arizona, on the basis of which this 
species was introduced into the Check-List, are found to be 
female examples of JZ. cénerascens (of. NELSON, Proc. Biol. 
Soc. Wash., XVII, 1904, 35). No. 454a@ is therefore to be 
eliminated from the list. 
458a. Sayornis nigricans semiatra (Vicors). This proves 
to be indistinguishable from SS. xzgricans (SWAINSON) (¢f. 
BREWSTER, Bull. Mus. Comp. Zool., XLI, 1902, 119), and is 
to be removed from the list. 
469.1. Empidonax griseus Brewster. This is found to be 
equivalent to #. canescens SALvIN & GopMaAN, which has 
priority (cf NELson, Auk, 1904, 80). Hence: 
469.1. Empidonax canescens Salvin & GopMAN. 
E-mpidonax canescens SALVIN & GODMAN, Biol. Centr.-Amer., 
Aves, II, Feb., 1889, 79. 
488. Corvus americanus AupuUBON. An earlier name for the 
American Crow is found in 
488. Corvus brachyrhynchos C. L. Bren, 
Corvus brachyrhynchos C. L. BREHM, Beitr. zur Vogelkunde, 
II, 1822, 56 (¢f RicHMoND, Proc. Biol. Soc. Wash., XVI, 
1903, 125). 
