59.82 
Article XXITI.— DIAGNOSES OF APPARENTLY NEW COLOM- 
BIAN BIRDS. IV. 
By Frank M. CHAPMAN. 
This is the sixth! preliminary paper based chiefly on the results of our 
explorations in Colombia. Since the publication of the fourth paper of 
this series, Miller and Boyle have completed a very successful reconnais- 
sance in Antioquia visiting parts of that region which had not before been 
reached by naturalists. Their collection contains a number of new and 
interesting forms, and, in connection with Miller’s photographs and care- 
ful field notes, it is particularly valuable for the light it throws on distri- 
butional problems. 
Meanwhile the study of our Colombian collections as a whole has been 
continued unremittingly, and it is hoped that the final report upon them will 
be concluded during the coming year. 
Cordial acknowledgments of my indebtedness for the loan of material 
used in the preparation of this paper are due Dr. C. W. Richmond, of the 
U.S. National Museum; Mr. Outram Bangs of the Museum of Comparative 
Zoology; Mr. W. E. Clyde Todd, of the Carnegie Museum, and Mr. Thomas 
E. Penard of Arlington, Mass. 
As in the preceding papers of this series, the nomenclature of Ridgway’s ' 
‘Color Standards and Nomenclature’ (Washington, 1912) has been employed. 
Crypturus soui caquete subsp. nov. 
Char. subsp.— Most nearly resembling C. s. mustelinus Bangs, the underparts, in 
the female, largely rich ochraceous-orange, the chest chestnut, the throat usually 
tinged with, and sometimes wholly ochraceous; the upperparts much darker, deep 
chestnut-brown rather than Prout’s-brown; the crown slaty black without brownish 
tinge; male resembling female above, but not unlike male of C. s. sout below. 
Type.— No. 115608, Am. Mus. Nat. Hist., @ ad., Florencia (alt. 675 ft.), 
Caqueté, Col.; L. E. Miller. 
1 References to the five preceding papers follow: (1) Diagnoses of Apparently New 
Colombian Birds, Bull. A. M. N. H., XX XT, 1912, pp. 139-166; (2) Diagnoses of Apparently 
New Colombian Birds, Il, XX XIII, 1914, pp. 167-192; (8) Diagnoses of Apparently New 
Colombian Birds, III, XX XIII, 1914, pp. 603-637; (4) Descriptions of Proposed New Birds 
from Central and South America, XX XIV, 1915, pp. 363-388; (5) The More Northern Spe- 
cies of the Genus Scytalopus Gould, The Auk, XX XITT, 1915, pp. 406—423. 
635 
