286 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



and Festa (Bol. Mus. Zool. Anat. Comp. Torino, vol. 14, 1899, p. 6) 

 is a female listed as "Pachyraniphus albogriseus" taken by Festa in 

 July 1895, at Punta de Sabana on the lower Rio Tuira, Darien. 

 While the specimen, presumed to be in the museum at the University 

 of Turin, is said to have been identified by Sclater, it should be 

 examined again, as determination of females in this genus is often 

 diflficult. Its locality is far distant from that known for any race of 

 P. albogriseus. 



PLATYPSARIS HOMOCHROUS HOMOCHROUS (Sclater): 

 One-colored Becard, Picogrueso Gris 



Pachyrhamplius homochrous P. L. Sclater, Proc. Zool. Soc. London, pt. 27, 

 August 1859, p. 142. (Pallatanga, Ecuador.) 



Small ; male, blackish slate above, gray below ; female, chestnut- 

 brown above, paler below (in general, similar to female of Pachy- 

 ramphiis cinnamomens but larger). 



Description. — Length 160-175 mm. Adult male, ninth primary 

 sharply pointed, half as long as tenth; crown and nape black; hind- 

 neck, back, and scapulars, blackish slate, changing over the rump 

 and upper tail coverts to slate color ; center of back with bases of 

 feathers white, forming a concealed patch ; tail blackish slate ; wings 

 dull blackish slate, edged with slate-gray ; wing coverts mainly slate 

 color ; under surface slate-gray, somewhat paler on chin and upper 

 throat ; rarely, the lower throat and upper f oreneck with a faint wash 

 of pink; carpal edge of wing in some mixed with white; axillars and 

 under wing coverts slate-gray ; inner margins of wing feathers 

 white. 



Adult female, ninth primary of normal length ; entire upper sur- 

 face, including tail and innermost secondaries, cinnamon to tawny- 

 rufous ; center of upper back with feather bases partly white, forming 

 an indefinite concealed patch ; primaries and outer secondaries dusky- 

 black, with the outer webs cinnamon ; imder surface buff to och- 

 raceous, usually paler on throat and abdomen ; axillars, under wing 

 coverts, and inner webs of wing feathers ochraceous-buff to tawny- 

 ochraceous. 



Immature male, wing with ninth primary normal, like tenth ; 

 crown black ; back, rump, and upper tail coverts grayish black ; wings 

 and tail as in female ; under surface grayish white, washed irregularly 

 with buff and gray. (Pattern of coloration varies with change in age.) 



A male, taken at the Candelaria Hydrographic Station, on the 

 Rio Pequeni, eastern Province of Panama, March 4, 1961, had the 



