284 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



cinereiventris. With the considerable series now available it appears 

 that those from Central America through eastern Panama are fairly 

 uniform in the shade of gray on the lower surface. In Colombia, 

 depth of this color is highly variable, ranging from pale gray to 

 black, but in the darker shades seldom duplicating those of Central 

 America. With this better understanding, the northern population 

 south through Panama may be separated under the name similis, 

 proposed by Cherrie, with the type locality Greytown, Nicaragua. A 

 specimen from Unguia, extreme northern Choco, Colombia, is as- 

 signed without question to this race. Others across the lowlands of 

 northern Colombia through the Sinu, lower middle Cauca, and 

 Magdalena drainages east to western Guajira (Carriapia), of average 

 darker gray coloration below, are to be recognized as cinereiventris. 

 Across the northern Andes in Colombia, through Antioquia and 

 south to Cauca and Huila, at elevations above 1200 meters, slightly 

 larger birds, very pale gray on the lower surface, represent another 

 form, dorsalis. 



PACHYRAMPHUS ALBOGRISEUS ORNATUS Cherrie: Black- 

 and-white Becard, Picogrueso Blanquinegro 



Pachyrhamphtis ornatus Cherrie, Proc. U.S. Nat. Mus., vol. 14, September 4, 

 1891, p. 338. (Barranca, Costa Rica.) 



Small ; male, generally similar to Pachyramphus ruftis, but larger, 

 with more white in the wings, and distal third of tail black, with 

 white tips. Female, yellow underneath ; crown brown, with a broad 

 black border at sides and rear. 



Description. — Length, 140-150 mm. Adult male, crown and nape 

 black basally, tipped with dark steel-blue ; back, scapulars, and rump 

 gray ; upper tail coverts slightly paler ; bases of rectrices gray, with 

 narrow shaft lines and distal third black; the individual feathers 

 tipped broadly with white on outer pair, the white decreasing in 

 sequence until on the central pair it becomes a narrow tip; wings 

 black ; the terminal row of the lesser coverts tipped narrowly with 

 white ; middle coverts tipped broadly, and greater coverts edged and 

 tipped with white ; inner wing feathers and the outer primary edged 

 with white ; forehead, a line across upper lores extending back above 

 eye, and a narrow line on the lower eyelid, white ; loral area immedi- 

 ately in front of eye black; a narrow, indistinct band on hindneck, 

 f oreneck, breast, and sides light gray ; abdomen and under tail coverts 

 white ; axillars, under wing coverts, and inner margins of wing 

 feathers white. 



