BIRDS OP NORTH AND MIDDLE AMERICA. 205 



(Manzanillo), Guererro (Acapulco), and Pacific slope of Oaxaca (Ta- 

 pana, province of Tehuantepec). 



Molothrus xneus (not Psarocolius aeneus Wagler) Cassin, Proc. Ac. Nat. Sci. Phila., 

 1866, 18, part (Manzanillo Bay, Colima).— Lawrence, Mem. Boat. See' 

 N. H., ii, 1874, 281, part (Manzanillo Bay; mountains of Colima); Bull. U. S. 

 Nat. Mus., no. 4, 1876, 24 (Tapana, prov. Tehuantepec, Oaxaca ).-Sclatbr, 

 Cat. Birds Brit. Mus., xi, 1886, 334, part.— Salvin and Godman, Biol. Centr.- 

 Am., Aves, i, 1886, 451, part (Manzanillo Bay, etc., Colima; Tapana, Oaxaca). 



^Molothrus] senem Sclatek and Salvin, Nom. A v. Neotr., 1873, 37, part. 



Mlolothrm'] ameus Ridgway, Man. N. Am. Birds, 1887, 367, part. 



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

 600, part. ' 



Callothrus smeus asdmilis Nelson, Auk, xvii, July, 1900, 266 (Acapulco, Guerrero, 

 8. w. Mexico; coll. U. S. Nat. Mus.). 



Genus MOLOTHRUS Swainson. 



Molothrus Swainson, Fauna Bor.-Am., ii, 1831, 277; App., 1, 494. (Type, Frin- 



gillapecoris Gmelin, = Onofcs ater Boddaert.) 

 Molobrus (emendation) Sternberg, Journ. fiir Orn., xvii, 1869, 125. 

 Hypobletis Gloger, Hand-u. Hilfsb. d. Nat, 1842, 260. (Type, Fringilla pecoris 



Gmelin, = Oriolus ater Boddaert. ) 

 Oyanothrus Oassin, Proc. Ac. Nat. Sci. Phila., xviii, Mar., 1866, 19. (Type, 



Tanagra bonariensis GmeHn. ) 

 Oyrtotes Reicheneach, Av. Syst. Nat., 1850, pi. 73. (Type, Icterm maxiUaris 



Lafresnaye and D'Orbigny, = Tanagra bonariensis Gmelin. ) 

 (?) Agelawides Cassin, Proc. Ac. Nat. Sci. Phila., xviii, 1866, 15. (Type, Agelaius 



badius Vieillot. ) 



Small, semiterrestrial, parasitic Icteridee with short conical bill, 

 rather long and pointed wings, and plain or uniform coloration. 



Bill much shorter than head, conical, compressed, with straight or 

 nearly straight outlines, its depth at base about equal to distance from 

 nostril to tip of maxilla, or a little less, its basal width decidedly less; 

 culmen straight or very slightly convex, sometimes elevated and 

 slightly arched posteriorly, more or less flattened, especially between 

 the nostrils; gonys straight or faintly convex,. slightly shorter than 

 distance from nostril to tip of maxilla; commissure nearly straight to 

 near base, where deflexed to the rictus, the maxillary tomium some- 

 times more or less convex in middle portion. Nostril small, roundish, 

 or oblong, with membrane above and behind, its posterior end touch- 

 ing feathering of frontal antise. Wing moderate or rather long (less 

 than five to nearly seven times as long as culmen, three and a half to 

 more than four times as long as tarsus), pointed; wing-tip variable in 

 length, from less than length of culmen (in M. hadiAis) to more than 

 twice as long (in M. rufo-axillaris) ; tertials not produced; ^ ninth (outer- 

 most) primary longer than fifth, usually longer than sixth, sometimes 



The drawing of generic details is incorrect in showing a projection of the longest 

 tertial. 



