254 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Tail not plicate (?), nearly as long as wing, rounded, the rectrices broad. 

 Tarsus much longer than culmen, rather stout, the anterior scutella 

 very distinct; middle toe, with claw, much shorter than tarsus but 

 decidedly longer than culmen; lateral toes about equal, rather short, 

 their claws not reaching to base of middle claw; hallux nearly as long 

 as lateral toes, much stouter, its claw much shorter than the digit. 



Coloration. — Uniform black, in both sexes. 



Range. — Southern Mexico to western Peru. (Three species, two of 

 them South American.) 



DIVES DIVES (Lichtenstein). 

 SUUICHRAST'S BLACKBmi). 



Adult mafo.— Entirely uniform deep black, with a slight greenish 

 blue gloss, especially on head, neck, and anterior under parts; bill, 

 legs, and feet black; length (skins), 264.2-281.9 (271.8); wing, 123.2- 

 132.8 (127.3); tail, 114.3-127 (119.1); culmen, from base, 28.5-32 

 (30.5); depth of bill at base, 13-14.2 (13.5); tarsus, 38.1^0.4(39.4); 

 middle toe, 25.4-27.9 (26.2).^ 



Admit /OTiafe.— Similar to the male in plumage but smaller and 

 usually with the black slightly less intense or glossy; length (skins), 

 235-255.3 (243.1); wing, 112.3-116.8 (113); tail, 102.1-114.3 (109); cul- 

 men, from base, 27.4r-29.2 (27.9); depth of bill at base, 12.4-13.2 

 (12.7); tarsus, 36.8-38.6 (37.6); middle toe, 22.9-24.9 (23.9).' 



A series of ten adults from Yucatan, embracing both sexes, but unfortunately none 

 of them with sex determined, measure as follows: Length (skins), 233.7-287 (255); 

 wing, .111.3-128.3 (120.4); tail, 97.8-121.9 (111.3); culmen, from base, 27.2-30.5 

 (28.5); depth of bill at base, 13.2-15.5 (14); tarsus, 35.6-39.1 (37.3); middle toe, 

 23.4-27.4 (25.1). 



Young. — Uniform dull sooty black or very dark sooty brown, rather 

 lighter on under pai;ts of body; remiges and rectrices as in adults. 



Southeastern Mexico, in States of Vera Cruz (Chichicaxtli, Mirador, 

 Orizaba, Coatzocoalcos, Plan del Eio, etc.), Puebla (Metlaltoyuca), 

 Mexico (Valley of Mexico), Oaxaca (Tuxtepec, Chiltepec, Playa 

 Vicente, Tehuantepec, Oaxaca, etc.), Chiapas (Guichicovi), and Yuca- 

 tan, and southward through eastern and central Guatemala to British 

 Honduras (Belize) and Honduras (Guaruma). 



Icterus dives Lichtenstein, Preis-Verz. Mex. Vog., 1830, 1 (Mexico; see Journ. 



fiirOrn., 1863, 56). 

 ILampropsar] dives Bonaparte, Consp. Av., i, 1850, 425. — ScLATERand Salvin, 



Nom. Av. Neotr., 1873, 38. 

 L[am.propsar} dives Cabanis, Mus. Hein., i, 1851, 194, footnote (Chiltepec; Cos- 



amaluapan; Real del Monte). 

 Lampropsar dives Cabanis, Journ. fiir Orn., 1861, 83 (crit. nomencl.). — Boucakd, 



Proc. Zool. Soc. Lond., 1883, 446 (Merida, n. Yucatan). 



^ Seven specimens. '■'Six specimens. 



