636 Bulletin American Museum of Natural History. (Vol. XXXIV, 
Remarks.— There unfortunately appears to be no name applicable to 
the bird inhabiting Amazonian Colombia, and doubtless eastern Ecuador. 
This race, however, is so well-marked that it cannot well be placed under 
any described form known to me. The characters, as usual, in this group, 
are best shown by the female of which we have two. Both these birds agree 
in their intensity of color and in having the lower throat-band rich chestnut, 
a character which, so far as I am aware, is shown by only one other race of 
this species— C. s. mustelinus. Of the latter form I have four topotypical 
females, not one of which approaches the Florencia females in the deep color 
of the upperparts and slaty blackness of the crown. 
A male of caquete from La Muralla differs above from a male of muste- 
linus much as do the females of these races from one another, ands is darker 
than the male of any form of sou known to me. 
‘The faunal diversity of Colombia is indicated by the fact that it appears 
to be necessary to refer our specimens of Crypturus sour from that country 
to no less than 5 forms, all of which are practically restricted to the Tropical 
Zone. Of these C. s. cauce@ is the least satisfactory since it appears to have 
no characters of its own and still cannot well be referred to any other form. 
The male is very near that of modestus and the female equally near that of 
sout. Since, however, neither of these names could properly be applied to 
it, it may for the present, at least, stand under the name I have suggested. 
With this far from acceptable compromise the races of sowt in Colombia 
appear to be distributed as follows: 
1. Crypturus souwi soui.— From the eastern base of the Eastern Andes, 
north of the Guaviare River, eastward. : 
2. (C.s. caquete.— Eastern base of the Eastern Andes from the Guaviare 
River southward and eastward. | 
3. C.s. mustelinus.— Santa Marta region (and also other portions of 
the arid coastal zone?). 
4. OC. s. cauce.— Cauca and Magdalena Valleys. 
5. C. s. modestus.— Pacific coast region south into western Ecuador, 
north to Nicaragua. 
Crypturus kKerriz sp. nov. 
Char. sp.— Most nearly related to Crypturus boucardi, but upperparts more 
barred and anteriorly browner; throat grayer, neck and breast blackish rather than 
gray, rest of underparts deeper, the breast slightly, the flanks conspicuously barred; 
size smaller. 
T'ype.— No. 123204, Am. Mus. Nat. Hist., 9, Baudo, Chocé, Colombia, July 3, 
1912;. Mrs. Ei. L. Kerr. 
Desenpiinn of Type.— Crown, nape, and sides of the head ay black; adie 
