410 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
The agent of the Lake Nicaragua Steam Navigation Compania for 
many courtesies. 
Any attempt on my part to express my gratitude to Capt. J. M. 
Dow, of the Pacific Mail Steamship Company, would fall pitifully short 
of the mark. Hehas both the ability and the will to render more aid to 
the naturalist in Central America than any one else in that part of the 
world. 
C. C. N. 
ON SOME COSTA RICAN BIRDS, WITH DESCRIPTIONS OF SEVEBAL 
SUPPOSED NEW SPECIES. 
By ROBERT RIDGWAY. 
The following interesting species are included in a small coilection of 
birds lately received by the National Museum from Sr. Don José C. 
Zeledon, of San José, Costa Rica. 
1. Carpodectes antoniz, Zeledon, MS., Ripa. Ibis, Jan. 1884, 27, pl. ii. 
Sp. cH.—Adult ¢ (No. 91832, Pirris, May, 1883; Juan Zeledon, ae 
lector). Similar to C. nitidus, Bae rather smaller, ae bill mostly bright 
yellow, the wings wholly pure white, and the pileum much paler pear!l- 
blue. Plumage, pure white, except the forehead and crown, which are 
pale pearl-blue, or glaucous, and back, scapular, rump, upper tail-cov- 
erts, and tail, which are a more delicate shade of the same. Bill, clear 
lemon-yellow (‘‘wax-yellow” in fresh specimen) with distinctly marked 
black stripe along the culmen; “iris, dark; feet, black.” Wing 5.40, 
tail 2.60, culmen .70, tarsus .90, middle toe .80. 
This lovely species much resembles U. nitidus, except as pointed out 
above, and is clearly distinct. 
Mr. Zeledon’s notes respecting this species are as follows: 
“You will be agreeably surprised to learn that I have made a most 
unexpected discovery in the shape of a new Carpodectes. The bird is 
snowy white, except on the back and top of the head, where a faint 
wash of gray is to be seen, all the back of the neck being pure white, 
like the rest of the body. No traces of the gray tinge are present on 
any other part of the plumage. The bill is somewhat smaller, less 
swollen, and more curved than in C. nitidus, and of a yellow color, with 
a black line along the culmen to the very tip; the feet are black, not 
plumbeous, as in the latter species; the dimensions are pretty much the 
same, excepting that the tail is rather shorter than in C. nitidus. 
‘There is but one specimen in my possession, which was obtained by 
my brother Juan, at Pirris, southwestern side of Costa Rica. It is a 
fine adult male, and was obtained in May last. 
“The OC. nitidus has been obtained only on the eastern side of the 
country. I am inclined, therefore, to believe that the present species is 
the western representative of the genus. 
ee 
