272 FOKMICAKIID^. 



1. Gymnocichla nudiceps. 



Myiothera nudiceps, Cassin, Proc. Ac. Sc. Phil. v. p. 106, pi. vi. 

 Pyriglena nudiceps, Sd. P. Z. S. 18.54, p. 113, et 1857, p. 47. 

 Gv'uuocicbla nudiceps, Scl. P. Z. S. 18.58, p. 274 ; Lawr. Ann. Lye. 

 'N. Y. vii. p. 294 (Panama); Scl. et Sale. P. Z. S. 1864, p. 356 



(Panama) ; iid. Noinencl. p. 73 ; Salv. P. Z. S. 1870, p. 195 



(Veragua). 

 Mynuelastes corvinus, Laivr. Ibi<>, 1803, p. 182 (cf. Salv. Ibis, 1874, 



p. 317). 



Uniform black above and beneatb ; head naked, in life blue ; 

 concealed dorsal spot, narrow edgings of wing-coverts, and very 

 slight tips of tail-feathers white ; undersides of wings cinereous ; 

 bill and feet black : whole length 6-2 inches, wing 3"1, tail 2-4. 



Hab, Veragua, Panama, and N. Colombia. 



a. cf ad. sk. Mina de Chorcha, Chiriqui Salviu-Godman Coll. 



{Arce). 



b. (S ad.; c, d. $ Bugaba, Chiriqui (ArcS). Salvin-Godman Coll. 

 ad. sk. 



e. cS ad. sk. Chiriqui (Arcf). Sclater Coll. 



f. tS ad. sk. Chitra, Veragua (Arcf). Sclater Coll. 



g^h. cJ 2 ad. sk. Lion Hill Station, Panama Salvin-Godman Coll. 



{McLeannnn). 



i, c? ad. sk. Panama (McLemman). Sclater Coll. 



j. 2 ^^- sk. Panama {McLcannan). Salvin-Godman Coll. 



k. S ad. sk. Panama. O. Salvin, Esq. [P.]. 



/. S ad. sk. Santa Marta, U. S. C. Purchased. 



2, Gymnocichla chiroleuca. 



Gvmnocichla nudiceps, Moore, P. Z. S. 18-59, p. 55 (Honduras) ; 



'Scl. et Salv. Ibis, 1859, p. 119 (Honduras) ; Laivr. Ann. L. N. Y. 



ix. p. 109 (Costa Eica) ; Frantz. J.f. O. 1869, p. 305 (Costa 



Rica). 

 Gymnocichla chiroleuca, Scl. et Salv. P. Z. S. 1869, p. 417 ; iid. 



Nomencl. p. 73 ; Salv. Ibis, 1869, pp. 314, 318. 



Like G. nudiceps, but bend of wing white ; bill stronger and 

 dorsal spot smaller. 



Hah. Honduras and Costa Rica. 



a. 6 ad. sk, Tucurriqui, Costa Rica (ArcS). Salvin-Godman Coll. 



(Type of the species.) 



20. PERCNOSTOLA. 



Type. 

 Percnostola, Cab. et Hein. Mus. Hein. ii. p. 10 (1859). ... P. funebris. 



This little section is of general sombre plumage, like Pyriglena ; 

 but has a stronger bill, which is wider at the base, and a subcrested 

 head. There is no dorsal spot. 



The three species are found in Guiana and Amazonia. 



