534 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult //«aZe.— Length (skins), 94.49-113.03 (104.39); wing, 50.80- 

 54.86 (52.83); tail, 40.39-43.67 (41.15); exposed culmen, 8.61-9.14 

 (8.89); tarsus, 17.27-18.03 (17.78); middle toe, 11.68-12.70 (12.19).' 



xifMt />;H.«^d.— Length (skin), 106.68; wing, 51.05; tail, 43.69; 

 exposed culmen, 8.64; tarsus, 17.78; middle toe, 11.68.^ 



Island of Cozumel and Holtaox Island, Yucatan.^ 



Phonipnra puHlla (not Tiariii puslUn Swainson) Salvin, Ibis, 1885, 190 (Cozumel). 

 [I'lioiiijjara lepida.l Subsp. a. Phonipanc pusilla Sharpe, Cat. Birds Brit. Mus., 



xii, 1888, 147, part. 

 Euetheia olivacea intermedia Eidgway, DesiT. New Sp. Birds from Cozumel, Feb. 



26, 1885, 2 (Cozumel I., Yucatan; U. S. Nat. Mus.); Proc. TJ. S. Nat. Mus., 



viii, 1885, 568. 

 E. luetheia] olivacea inhrmedia Eidgway, Man. N. Am. Birds, 1887, 451, footnote. 

 Phonipara intermedia Salvin and Godman, Biol. Centr.-Am. Aves, i, 1885, 360. 

 P.[1ionipara'\ intermedia Ssarfe, Cat. Birds Brit. Mus., xii, 1888, 148, in list of 



specimens (Cozumel and Holbox islands, Yucatan). 

 Phonipara lepida (not Fringilla lepida Linnaeus) Sharpe, Cat. Birds Brit. Mus., 



xii, 1888, 145, part (in synonymy). 



EUETHEIA OLIVACEA PUSILLA (Swainson). 

 MEXICAN GRASSaUIT. 



Similar to E. o. Intermedia but with the black markings in adult 

 males istill more extended, that beneath extending over breast, and in 

 fully adult males the auricular region and crown black or mostly black.* 



Young male. — Similar in coloration to adult female, but duller and 

 without trace of yellow on head, the chin dull graj-ish white, and the 

 loral or supraloral region dusky. 



Young female. — Similar to j'oung male, but without dull whitish on 

 chin or dusky on lores. 



Adalt mafe.— Length (skins), 93.98-108.97 (97.79); wing, 48.26- 

 54.36 (51.82); tail, 35.81-43.43 (39.62); exposed culmen, 8.89-10.16 

 (9.40); depth of bill at base, 6.35-7.37 (6.86); tarsus, 16.26-18.03 

 (17.27); middle toe, 11.18-12.95 (12.19).' 



AdAdt female.— \^%xig\h (skins), 92.46-100.84 (96.27); wing, 48.36- 

 51.56 (50.04); tail, 35.56-40.13 (37.59); exposed culmen, 8.38-9.40 



^ Six specimens. 



''■ One specimen. 



' I have not seen specimens from Holbox Island. 



*Some specimens have the crown and auricular region olive-green, as in E. o. inter- 

 media and the Antillean forms, and are scarcely to be distinguished from the former. 

 Since, however, specimens with black crowns and auriculars occur, usually pre- 

 dominantly, in the same localities, it is reasonable to suppose that these specimens 

 with olive-green crown, etc., are younger individuals. 



^Thirty-one specimens. 



