NO. 9 BIRDS OF ISLA COIBA, PANAMA—WETMORE 83 
In the original description, written 55 years ago, when relatively 
few specimens were available, Hartert compared the Coiba bird with 
the race of Cozumel Island, off the coast of Quintano Roo, México, 
which was suggested by the duller colors of coibae. Actually, the 
subspecies of Coiba Island is more closely similar to the forms of 
the Panamanian mainland from which it differs in very decidedly 
darker, duller colors, the breast and sides being distinctly greenish 
instead of bright yellow, the dorsal surface duller green, and the 
crown browner. 
A male taken February 3 had the soft parts colored as follows: 
Iris wax yellow; maxilla mouse brown; mandible neutral gray; 
tarsus and toes avellaneous. Following is a summary of measure- 
ments based on males, including the two in the type series, now in 
the American Museum of Natural History. No females have been 
collected. 
Males (5 specimens), wing 70.4-73.0 (71.8), tail 51.7-53.4 (52.5), 
culmen from base 17.5-18.6 (18.1), tarsus 20.7-23.1 (21.8) mm. 
The type specimen, taken by Batty April 20, 1901, an immature 
bird as is shown by the dark, almost black, bill, is browner on the 
crown than adult specimens. The Batty collection contains another 
skin (Amer. Mus. Nat. Hist. No. 505408) labeled “Hicaron Island, 
3, Jan. 14, 1902.” As this is an unmistakable specimen of Cyclarhis 
gujanensis subflavescens, found in the lower mountains of Chiriqui, 
the locality given certainly is erroneous. Isla Jicaron lies immediately 
to the south of Coiba, distant about 4 miles, with Coiba between it 
and the mainland, so that if Cyclarhis occurs there it would be ex- 
pected to find it the same as, or at least closely allied to, C. g. coibae. 
Family ViIrREONIDAE: Vireos 
VIREO FLAVOVIRIDIS (Cassin): Yellow-green Vireo, Julian Chivi 
The yellow-green vireo reached Coiba on its return from “winter” 
quarters in northern South America on January 19, when a small 
flight arrived, so that singing males were scattered at sunrise through 
the woods along the Punta Damas trail. Two days later several were 
found in the low forest back of the beach near the mouth of the 
Rio Catival, and from that time they were recorded almost daily 
throughout the forest, ranging in the high tree-crown area of the 
taller trees as well as in the lower woodland near the river mouths. 
They were common on Isla Rancheria February 4. Two races are 
represented in the eight specimens taken. 
