DULUS. 401 



A. Gape of mouth much arched. Metatarsal scutellse in two series. Body 



streaked beneath. 



Dulinae. Legs very stout, though short. Nostrils large, circular, ex- 

 posed, with naked membrane behind though scarcely above them. 

 Frontal feathers directed backwards, soft, and like those of rest 

 of head ; with few bristles. Wings longer than the narrow, nearly 

 even tail. First primary nearly one-half the 2d, which is much 

 longer than secondaries. Under tail coverts reaching over about' 

 the basal two-fifths of tail. Adults streaked longitudinally beneath. 

 Young unknown. 



B. Gape of mouth nearly straight. Metatarsal scutellae in three series. Body 



plain beneath. 



Ampelinae. Legs moderate. Nostrils elongated, linear, with the 

 frontal feathers extending close to the edge and to anterior ex- 

 tremity, concealing them ; these feathers short, velvety, and erect, 

 with few bristles. Wings very long and acute ; outer or 1st pri- 

 mary so much reduced as to be almost inappreciable ; the 2d 

 nearly the longest. Wing nearly twice the length of the short, 

 narrow, even tail. Under coverts of tail reaching almost to its 

 tip. Secondary quills with flat horny appendages at end of shaft 

 like red sealing wax. Young birds streaked beneath as in Dalus^ 

 Adults plain. 



Ptilogonatinae. Legs moderate. Nostrils oval, with wide naked 

 membrane above, and to some extent behind them ; the frontal 

 feathers not reaching to their border, and ratlier soft. Wings 

 graduated, shorter than the somewhat broad, fan-shaped tail ; the 

 1st quill nearly half the 2d. Young birds without spots or streaks ; 

 adults plain. 



Subfamily DULIN^. 



DULUS, VlEILLOT. 



Dnlus, VlEILLOT, Analyse, 1816, 42, no. 131. (Type "Tangara esclave,'^ 

 BuFFON = Tana(jra dominica, Linn.) 



Plumage compact. Wings moderately pointed, a little longer than the 

 nearly even, slightly rounded tail. First quill not quite half the 2d, which 

 about equals 6th ; 3d and 4th longest. Tail feathers rather narrow. 



Bill shaped much like Icteria ; considerably decurved ; cnlrnen decurving 

 from base, upper edge of lower mandible less so ; commissure much arclied ; 

 mouth deeply cleft. Bill broad as well as high at base, compressed about 

 the middle to the strongly notched tip ; lower bill with slight broad notch. 

 Tongue rather narrow, horny towards tip, and simply bifid. Nostrils large, 

 circular, in anterior end of nasal groove ; surrounded, except anteriorly, by 

 membrane ; the frontal feathers not directed forwards, and with few bristles, 

 not reaching to posterior edge of nostrils. Rictal bristles short. 



Legs very stout ; tarsus scarcely as long as middle toe and claw: aboiit seven 

 well-marked scutellae anteriorly; sides of tarsus normally of a single plate 

 26 May, 1866. 



