eee | BANGS — TWO SAN MIGUEL BIRDS 73 
1902 
Vireo insulanus sp. nov. 
Type, from San Miguel Island, Bay of Panama, 9 adult, no. 4947, coll. of 
E. A. and O. Bangs, collected April 29, 1900, by W. W. Brown, Jr. 
Characters.— Similar to V. flavoviridis, but much smaller ; general colora- 
tion paler, the yellow of sides and under tail coverts paler as well as duller — 
slightly greener; back grayer olive green ; wing formula as in V. flavoviridis, 
i. e., outer primary intermediate in length between fourth and fifth (counting 
from outside). In V. olévacews the outer primary equals or exceeds the fourth, 
while in V. chivi agilis the outer primary equals the fifth. 
The male is considerably larger than the female, as appears to be the case 
with all the species of this group— Vireosylva. ~~. In color the sexes are 
alike. Mr. Brown notes that, in freshly killed specimens, the ‘‘iris is red, the 
tarsus plumbeous.”’ 
MEASUREMENTS (in millimeters). 
Vireo insulanus Bangs. 
Sex Exposed 
No. and age Wing Tail Tarsus culmen 
4947 (type) @ ad. File 50.0 175A 13.4 
4949 (topotype) ad. TRO 49.0 17.0 m2 
4948 ae & ad. 7525 Bees 16.8 13.4 
4950 e & ad. 77.0 55-0 17.6 13.8 
Virco flavoviridis (Cassin). 
Sex Exposed 
No. Locality and age Wing Tail Tarsus culmen 
8696  Boquete, Chiriqui OFad: 76.0 53: 17.6 14. 
8699 as ef O8ad: isos 54- 18.2 14. 
8698 ie 7 & ad. 83.0 58. 18.2 se 
8697 Bogaba, Chiriqui & ad. 82.0 56. 17.8 Tiss 
Varcoichiva agilis (Licht.). 
Sex Exposed 
No. Locality. and age Wing Tail Tarsus culmen 
5468 Santa Marta, Colombia @ ad. 66. 47.0 18.0 14.0 
5467 a Pe: 6P Bel, 7736 Gites 17.4 15.0 
BAGO), ee a auad. (5 715s 55-0 18.0 14.4 
WA7On s) “ Gad 74 52.0 18.4 == 
