HETERORHINA. 



115 



A specimen, apparently of this species, in Mr. Lawrence's collec- 

 tion, from Panama, differs from a type specimen and Mr. Salvin's 

 description in being entirely without the fuliginous shade of the 

 under parts ; these are grayish along the median region, obso- 

 letely varied with dusky, the sides much like the back, the same 

 color tinging all the under parts of body. The blackish margins 

 of the dorsal feathers are scarcely or not at all appreciable ; the 

 spots on the coverts are very obsoletely indicated. It is probably 

 a more adult bird than as described by Mr. Salvin. 



M. philomela is said by Mr. Salvin to differ from M. hambla in 

 having the wing coverts spotted, instead of being banded with white. 

 M. albigularis, of Sclater, is said to differ from both in the white 

 throat, and from philomela in the white bands of the wing. 



Total length, 4.00 ; wing, 2.05 ; tail, 1.15 ; graduation, .33 ; exposed portion 

 of 1st primary, .80, of 2d, 1.30, of longest, 4th (measured from exposed base 

 of 1st primary), 1.60; length of bill from forehead, .76, from nostril, .48, 

 along gape, .82; tarsus, .80,; middle toe and claw, .74; hind toe and claw, 

 .65 ; claw alone, .30. 



HETERORHINA, Baird. 

 Heterorhina, Baihd. (Type Scytalopus prostheleucas, Sclater.) 



In the introductory synopsis, and in the preceding remarks rela- 

 tive to Microcer cuius, I have sufficiently indicated the characters 

 of this genus. The following synopsis may serve to distinguish the 

 allied species : — 



A. Back brownish-red ; head darker ; sides of head black, 

 spotted with white. 



a. Throat pure white, continuous with pure white on 

 the breast and belly; wing coverts spotted with 

 white. 



1. Top of head reddish-brown, or like the back. 



Breast and belly soiled white; tarsus .84 . prosthdeuca. 

 Breast and belly pure white ; tarsus .90 . leucosticta. 



2. Top of head black. (Specimen from the Napo.) 

 6. Feathers of throat white, edged with black ; breast 



plumbeous ; coverts unspotted. 



1. Topofheadreddishorolive brownish; tarsus, 90 gnseicollis. 



2. Top of head black ; tarsus 1.00 . . . hucophrys. 



