368 Bulletin American Museum of Natural History. [Vol. XXXIV, 
sionally a slight buffy tint at the base of the bill; the hazel lining of the wings some-— 
what deeper in color and more restricted than in the following forms. 
Range.— Guianas southward to the lower Amazon. 
Remarks.— My series of thirteen Guianan specimens of this race vary 
widely in the color of the upperparts. In some the prevailing color above 
is dark olive, in others it is shining natal-brown or natal-brown with purplish 
reflections. ‘The underparts are more constant in color, and the light 
vinaceous-fawn (with sometimes a grayish cast) of the breast cannot be 
matched by any specimen in our series of the remaining races. 
Specumens examined.— Dutch Guiana: Vicinity Paramaribo (Coll. T. E. 
Penard), 5; British Guiana: Demarara, 1; Rockstone, 1; Potaro River, 6. 
Brazil: Santarem, 1. (This specimen is paler above than the average 
Guianan specimen with which below it agrees exactly. The head is miss- 
ing.) : 
Leptotila rufaxilla hellmayri subsp. nov. 
Char. subsp.— Most nearly resembling L. 7. dubusi (Bonap.) but upperparts 
averaging more cinnamomeus, sides and posterior margin of the throat with more 
pinkish cinnamon, whitish throat-patch much more extended posteriorly, forehead 
whiter, blue-gray of the crown wider, reaching back to the occiput; wings and tail 
longer. Readily distinguished from L. r. rufazilla by its always more cinnamomeus 
upperparts, richer vinaceous underparts, paler crown and whiter forehead. 
T'ype.— No. 59494, Am. Mus. Nat. Hist. & ad., near Princestown, Trinidad, 
March 10, 18938; F. M. Chapman. 
Range.— Island of Trinidad and northeastern Venezuela. 
Remarks.— This form is so strongly differentiated from true rufaxilla 
that not one of our fourteen specimens of it could for a moment be mistaken 
for any one of our fourteen specimens of that form. The range of variation 
in the color of the upperparts is about as extensive as in rufaxila, some 
specimens being largely olive above, while others are almost pure light cin- 
namon-brown, but the olive is always paler than in rufaxila and the 
cinnamon-brown specimens bear small resemblance to the purple tinted 
examples of rufazilla. | 
In general coloration specimens of hellmayri can sometimes be matched 
by specimens of dubusi, but the former always has the white of the throat and 
gray-blue of the crown more extended posteriorly, and is larger. 
I take pleasure in dedicating this race to that distinguished student of 
the Trinidad avifauna, Dr. Carl E. Hellmayr. 
Specimens examined.— Trinidad, 12; Venezuela: Cristobal Colon, 
Paria Peninsula, 2. (These two birds are paler both below and above and 
