BIRDS FROM COSTA RICA—WETMORE 63 
forested mountain back of the house at Hacienda Santa Maria, in the 
region called Papal. The bird was moving through the lower branches 
of the trees. 
ONCOSTOMA CINEREIGULARE (P. L. Sclater) 
Todirostrum cinereigulare P. L. ScuatTER, Proc. Zool. Soc. London, 1856 (Jan. 26, 
1857), p. 295 (Cérdoba, Veracruz). 
On November 2 near Liberia I shot one of these flycatchers in heavy 
woodland where it was in company with other little forest birds. 
LOPHOTRICCUS PILEATUS LUTEIVENTRIS Taczanowski 
Lophotriccus squamicristatus luteiventris TAcZANOWSKI, Ornithologie de Pérou, 
vol. 2, 1884, p. 231 (Chiriqui, Panamé). 
At the Hacienda Santa Maria I shot one of these flycatchers in 
uadergrowth near the border of dense forest as it moved slowly about 
perching quietly. On November 9 I secured another from a moving 
flock of little forest birds. 
Family HIRUNDINIDAE 
HIRUNDO RUSTICA ERYTHROGASTER Boddaert: Barn Swallow 
Hirundo erythrogaster BoppAERT, Table des planches enluminéez, 1783, p. 45 
(Cayenne). 
The barn swallow was seen commonly around Liberia from October 
18 to November 3 and on November 18, flying over open pastures, 
especially at the airport. Their numbers fluctuated somewhat, and 
they were evidently in southward migration. As they were scattered 
widely it was difficult to obtain a true picture of their numbers, par- 
ticularly in view of their habit of coursing over extended areas while 
feeding. On October 23, after a heavy rain, I found about a hundred 
gathered on telephone wires near the Rio Colorado, and near Liberia 
on the same day I recorded two additional groups of 20 to 25 each. 
Toward the end of October they decreased in abundance briefly but 
were common again on November 3, and on my return from the 
mountains J saw many on November 18. Seven skins obtained on 
October 23 include adult and immature birds of both sexes. 
Elsewhere in Costa Rica I recorded several near San Ramén on 
October 16, a flock of several hundred at the airport in Puntarenas 
on November 19, many at the airport in San José on November 20, 
and several near Cartago on November 23. 
Family CORVIDAE 
CALOCITTA FORMOSA POMPATA Bangs 
Calocitta formosa pompata Banas, Proc. New England Zod6l. Club, vol. 4, Mar. 13, 
1914, p. 102 (Bolsén, Guanacaste, Costa Rica). 
The magpie-jay is one of the most attractive birds that I found in 
