204 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



22.4-23.6 (23.1); depth of ])ill at ))ase, 13-14 (13.2); tarsus, 27.9-30.2 

 (29.5); middle toe, 22.1-23.4 (22.9)-' 



Adult fe in ale. — Above dark mouse gray, the feathers with darker 

 centers, especially on back and scapulars, where slightly glossed with 

 greenish blue; wings and tail graA^sh dusky, faintly glossed with 

 greenish, the feathers with narrow paler gra34sh margins, most dis- 

 tinct on smaller wing-coverts; under parts paler mouse gray, some- 

 times indistinctly streaked with darker, the chin and throat paler; bill, 

 legs, and feet black; length (skins), 193-210.8 (194.8); wing, lol. 3-107.4 

 (104.6); tail, 69.1-76.2 (73.4); culmen, from base, 19.3-20.3 (19.8); 

 depth of bill at base, 11.7-12.4 (11.9); tarsus, 25.4-27.9 (27.4); middle 

 toe, 20.1-21.1(20.6):' 



Young male. — Similar to the young female of (J. rohuMus l)ut decid- 

 edly paler, especiall}' ))elow; upper parts deep sooty grayish (similar 

 to under parts of j^oung female of C. rohastas), the wing-coverts with 

 terminal margins of paler gray; under parts similar but rather paler, 

 indistinctly streaked with dull olive-^^ellowish, the abdomen inclining 

 to the latter color. (Young female not seen.) 



Northwestern Mexico, in States of Sonora (Hermosilla) and Sinaloa 

 (Culiacau, Mazatlan, etc.) and Territor^^ of Tepic (San Bias, Acapo- 

 ueta, etc.). 



Fsarocol'iKS aeneus Wagler, Isis, 1829, 758 ("Mexico"; ex Icier as aenetis Lichteii- 



stem, manuscript; coll. Berlin Mus. ). — Bonaparte, Consp. Av., i, 1850, 426. 

 Algelaiusi leneus Gray, Gen. Birds, ii, 1849, 346. 

 M[olothr%s] ssneus Cabanis, Mus. Hein., i, Sept., 1851, 192, footnote (Mexico). — 



RiDGWAY, Man. N. Am. Birds, 1887, 367, part. 

 Molothrus xneus Cassin, Proc. Ac. Nat. Sci. Phila., 1866, 18, part (Mazatlan). — 



Lawrence, Mem. Bost. Soc. N. H., ii, 1874, 281, part (Mazatlan; habits).— 



Sclater, Cat. Birds Brit. Mus., xi, 1886, 334, part (Presidio, near Mazatlan; 



Mazatlan). — Salvin and Godman, Biol. Centr.-Ani., Aves, i, 1886, 451, part 



(Mazatlan; Presidio). 

 [Molothrus'] leneus Sclater and Salvin, Nom. Av. Neotr., 1873, 37, part. 

 Clullothrus'] leneus Ridgway, Man. N. Am. Birds, 1887, 589, part; 2d ed., 1896, 



600, part. 



CALLOTHRUS iENEUS ASSIMILIS Nelson. 

 LESSER BRONZED OOWBIRD. 



Similar to O. ce. (eneics, but smaller. 



Adult male.— l^ength (skins), 190.5-200.7 (196.1); wing, 105.2-111.8 

 (108.7); tail, 74.4-81.5 (77.5); culmen, from base, 20.8-22.6 (21.3); 

 depth of bill at base, 12.4-13 (12.7); tarsus, 27.9-29.5 (28.5); middle 

 toe, 20.3-22.1 (21.3).' 



(Adult female and young not seen.) 



Southwestern Mexico, in States of Jalisco (Barranca Ibarra), Colima 



I 



' Six specimens. '^ Four specimens. 



