AVES. 479 



Wings long, with third and fourth quills (sometimes second also) 



subequal, third longest of all. 



Sp. Fluvicola pica GBAY, Musdcapa bicolor GM., BUFF. PL enl. 566, fig. 3, 

 675, fig. i, Cayenne; white, except the neck, wings and tail, which are 

 black. Fluvicola cursoria SWAINS., Musdcapa climacura VIEILL., &c. 



Xenurus BOIE, Alectrurus VIEILL. Bill short, conical, with 

 the culmen rounded. Long bristles at the angle of mouth. Tarsi 

 long. Wings long, with first or first two quills sinuate at the 

 point in males, third longest of all. Tail in some erect, supported 

 by setaceous feathers, in some with two feathers elongate, the stem 

 naked, vaned at the apex. Claw of middle toe and of hallux long, 

 curved, acute. 



Sp. Xenurus alector, Alectrurus tricolor VIEILL., Musdcapa alector MAXIM., 

 TEMM. PL color. 155; Xenurus psalis nob., Musdcapa psalura TEMM., 

 Musdcapa risora (sic) VIEILL., Galer. PL 131, TEMM. PI. col. 286, 296; 

 both species from Brasil. 



Add genera of modern writers allied to the Fluvicolce : Copurus 

 STRICKL., Ochihoeca CABAN., Centrites ejusd, Ptyonwra GOULD, 

 Agriomis GOULD and some others, on which consult GRAY Gener. 

 of Birds and CABANIS Arch. f. Naturgesch. 1847, pp. 254 256 

 and p. 340. 



Calyptura S WAINS., GRAY. Bill short, emarginate, with culmen 

 arched towards the tip. Nostrils basal, lateral, rounded. Wings 

 rounded, with third, fourth and fifth quills longest of all. Tarsi 

 slender, elongate. Outer toes conjoined at the base. Tail very 

 short, almost concealed. 



Sp. Calyptura cristata SWAINS., Pardalotus cristatus VIEILL, GUEB. Iconogr., 

 Ois. PI, 7, fig. i : Brasil. 



Pipra L. Bill short, subtrigonal, broad at the base, curved at 

 the tip, compressed, emarginate. Nostrils basal, lateral, partly 

 covered by the feathers of forehead. Tarsi longer than middle toe; 

 toes short ; two outer concrete at the base, free at the point only. 

 Wings with third and fourth quills longest of all. Tail short. 



Sp. Pipra pareola L., BUFF. PL enl. 687, fig. 2 (adult male), PI. 303, fig. 2 

 (young male), LESSON Omith. PL 51, fig. i; Pipra erythrocephala L., 

 BUFF. PL enl. 34, fig. i ; GUERIN Icon., Ois. PL 16, fig. 2, &c. Small 

 South American birds, of which the males have lively and gaudy colours, 

 mostly the head red, whilst the females have a greyish-green, single coloured 

 plumage. In some species the two middle tail-feathers, especially in adult 

 males, are elongated; they have the first four or five flag-feathers narrow 

 and bent. Of these species CABANIS forms the genus Chiroxiphia. In others 



