P.N.E.Z.C. 
28 BANGS — CHIRIQUI BIRDS [ Vol. II 
Campylopterus hemileucurus mellitus subsp. nov. 
Thirty-two specimens, both sexes, Boquete and Volcan de 
Chiriqui, 4000 to 7500 feet, February, March and April. 
Type, from Boquete, southern slope of Volcan de Chiriqui, 4800 feet alti- 
tude, g adult, no. 8425, coll. of E. A. and O. Bangs, collected April 10, rgor, 
by W. W. Brown, Jr. 
Characters.— Similar to true C. hemileucurus of Mexico, but larger; bill 
longer; tail more deeply tipped with white; adult male with breast and belly 
uniform violet (in true hemz/eucurus the belly gradually becomes much bluer 
than the breast) ; upper parts with more green, less violet, (in true C. hemzleu- 
curus the green is restricted to the upper tail coverts, wing coverts, and a few 
of the scapulars — in the new bird the rump is mostly, sometimes wholly, green 
as well) ; adult female with back and rump wholly green (in true C. hemileu- 
curus the adult female has a strong coppery tinge to the upper parts, not seen 
in the new bird) and throat more violet, less blue. 
MEASUREMENTS 7® (in millimeters). 
No. Sex and age Wing Tail Culmen 
$425 g ad. 80.0 58.0 28.5 
8427 o ad. 78.5 56.0 28.5 
8429 & ad. 78.0 57:5 29.0 
8432 & ad. 79.5 59-0 28.5 
8434 & ad. 79-5 58.0 29.0 
8438 ? ad. 72.3 55-0 30.5 
8439 ? ad. 70.--* 54-0 31-5 
8440 2 ad. 73.0 55-0 31.5 
8441 Q ad. 74.0 57-0 32.0 
Remarks.— Vhrough the kindness of Mr. E. W. Nelson of the 
U.S. Biological Survey I was able, while lately in Washington, to 
compare our skins with the fine series of true C. hemileucurus that 
he and Mr. Goldman collected in southern Mexico. The southern 
bird proved to be a very well-marked race, at once distinguished 
by its larger size, longer bill and the color differences pointed out 
above. 
1 Mellitus — lovely. 
? Adult males of true C. Aemileucurus from southern Mexico measure (about): wing, 78.; tail, 
55-5; culmen, 26.5 mm. 
8 Tips of primaries somewhat worn off. 
