94 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



C[rotophaga] maior Cabanis and Heine, Mus. Hein., iv, Heft 1, 1863, 99 (Guiana; 



Brazil). 

 [Crotophaga] maior Heine and Reichenow, Nom. Mus. Hein. Orn., 1890, 204 



(Guiana; Brazil). 

 Crotophaga ani (not of Linnaeus) Viehjxjt, Gal. Ois., i, 1825, -35, pi. 43. 



CROTOPHAGA SULCIROSTRIS Swainson. 



GROOVE-BILLED ANI. 



Adults (sexes alike). — Maxilla with several distinct curved grooves 

 and ridges, parallel with curve of culmen; general color dull black, 

 faintly glossed with violet or violet-blue on wing-coverts, remiges, 

 and middle rec trices, still more faintly glossed with greenish on pri- 

 maries and under parts; feathers of head and neck rather broadly 

 edged with dull purplish bronze, the scapulars, interscapulars, and 

 smaller wing-coverts with a broad lunulate or U-shaped submar- 

 ginal mark of dull greenish bronze or bronze-green, the terminal 

 margin of each feather and a narrow anterior border to the bronzy 

 submarginal mark black; feathers of chest with similar but narrower 

 and less distinct markings; under surface of remiges and rectrices 

 glossy greenish or bluish black; bill black or brownish black, often 

 partly grayish brown or horn color, especially on upper half (more or 

 less) of maxilla; naked skin of loral and orbital regions dull black; 

 iris dark brown; legs and feet black. 



Young. — Uniform brownish black, the secondaries and tail faintly 

 glossed with violet, the primaries with greenish or greenish blue. 



Adult male.— Length (skins), 280-342 (303); wing, 128-157 (142.5); 

 tail, 160-197 (180.2); culmen, 25-30 (28.1); tarsus, 31-36 (34.1); 

 outer anterior toe, 22-25.5 (24.2).° 



Adult female.— Length (skins), 280-320 (301); wing, 128-142 

 (133.9); tail, 160-182 (167.7); culmen, 25-29 (26.1); tarsus, 31-35.5 

 (33.6); outer anterior toe, 21-25.5 (23.3). 6 



a Twenty-five specimens. 



Fifteen specimens. 



Locality. 



Wing. 



Tail. 



Cul- 

 men. 



Tarsus. 



Outer 



anterior 



toe. 



MALES. 



One adult male from Lower California 



Five adult males from western Mexico (Sinaloa, Tepic, and 



Colima) 



One adult male from Oaxaca 



Four adult males from Tamaulipas (1), Vera Cruz (1), and 



Tabasco (2) 



One adult male from Yucatan 



One adult male from British Honduras 



Two adult males from Honduras 



Five adult males from Nicaragua 



Four adult males from Costa Kica 



156.5 



144.7 

 143 



157 



138.6 



154 



144 



132.5 



140 



197 



187.5 

 178 



179 



173.7 



184 



187 



166.5 



175.8 



27 



28.1 

 26.5 



27 



29 



30 



28.5 



27.7 



28.7 



35 



34.3 

 34.5 



33 



34.2 



35 



34 



32.5 



34 



24.5 



24.6 

 22 



25 



23.6 



25 



23 



24.7 



24.3 



