Carriker : List of the Birds of Costa Rica. 393 



Type, No. 27,884, Carnegie Museum Collection of Birds, adult 3% 

 Ciruelas, Costa Rica, M. A. Carriker, Jr., Collector. 



Same as C. flavirostris flavirostris of Mexico and Texas, except for 

 its smaller size. Differs from C. flavirostris madrensis Nelson, in the 

 same manner as that form differs from true flavirostris, viz., in the 

 absence of white edgings on the wing-coverts. Birds from Sinaloa, 

 Mexico, approach madrensis. 



A series of twenty-seven skins in the Collection of the American 

 Museum of Natural History, from Montemorales, Nuevo Leon, 

 Boquillo, and Tampico, Mexico, and Lomita, Texas, measure as fol- 

 lows : Female — wing, 193-203 (195.5); tail, 125-138 (130.5). 

 Male — wing, 196-210 (200.5) ■> ta ^> [ 3 I-I 45 ( z 35)- Seven speci- 

 mens in the Collection of the Carnegie Museum from Brownsville, 

 Texas, measure as follows: Male — wing, 195-200 (198) ; tail, 128- 

 139 (133.5); bi\\, 14; tarsus, 25-27 (26). Female — wing, 191- 

 x 95 ( T 9 2 ); tail > 128-134 (131); bill, 13-14-5 (14.5); tarsus, 25-27 

 (26). Average measurements for C. flavirostris flavirostris : Male — 

 wing, 199.2; tail, 134.2 ; bill, 14; tarsus, 26. Female — wing, 193.7; 

 tail, 130.7; bill, 14.5; tarsus, 26. 



Of the new form, nine specimens were examined, three in the Col- 

 lection of the Carnegie Museum from Bagaces and Ciruelas, and six 

 in the Collection of E. A. and O. Bangs, of which five were from 

 Bolson and one from Juan Viiias. 



Measurements : Male — wing, 1 71-183 (178); tail, n 2-1 2 2 (114); 

 tarsus, 22-24 (22.8); bill, 14. 5-16 (15). 



Female — wing, 175-180 (178); tail, 111-120 (116); tarsus, 21- 

 23 (22) ; bill, 13-15 (14). 



Thus it will be seen that while the wing, tail, and tarsus of the 

 Costa Rican bird are decidedly smaller than those of the northern, the 

 bill is actually larger. 



The bird ranges over the plateau district, descending on the Carib- 

 bean slope to about 2,000 feet, while on the Pacific it goes down 

 practically to sea-level over a large part of Guanacaste and the shores 

 of the Gulf of Nicoya. 



21. Columba rufina Temminck and Knip. 



Columba rufina Salvin, Ibis, 1870, 1 15 (Costa Rica). — Zeledon, An. Mus. 

 Nac. de C. R., I, 1887, 127 (Talamanca). — Cherrie, Expl. Zool. en 

 Costa Rica, 1891-2, 1893, 53 (Lagarto and Buenos Aires). — Salvadori, 



