l6o BROOKLYN IXSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 
Progne chalybea chalvbea (Gmelin). 
Hinindo chalybea Gm., Syst. Nat. I. 1788. p. 1026. 
Prague chalybea Berlepsch & Hartert, p. 14. 
Native name Golondrina. Common at Altagracia, Caicara and 
Ouiribana de Caicara from December to April. Immature birds 
were collected at Las Guacas on the San Feliz River (near the Cuchi- 
vero River) in May. 
Klages collected specimens on the Caura (Am. Mus. Coll.) in 
Jnly and August. 
Phaeoprogne' tapera im MACULA ta Chapman 
Hinindo tapera L., Syst. Nat. ed. 12. I. 1766. p. 345. 
Progne tapera Berlepsch & Hartert. p. 14. 
Phacoprogne tapera iiiunaciilata Chapman. Bull. Am. Mus Nat. Hist. 
XXXI. 1912. p. 156 (Type 3 Chicoral, Tolima. Colombia, in Ameri- 
can Museum of Natural History). 
A single specimen of this species was collected at Caicara, July 
4th, 1898. None were observed on my more recent expeditions. 
In the American Museum is a series of ten specimens collected by 
Klages sent from Suapure and Maripa on the Caura River, and two 
examples of Proi^nc chalybea chalybea, one from La L'nion and the 
other from Maripa, indicating that this is the commun form on the 
Caura, while my own experience showed P. chalybea to l>e the cuninmn 
form along the middle stretches of the Orinoco. 
The American Museum specimens of P. tapera inimacnlata from 
llie Caura river were collected during April, May and December. 
Stelgidoptervx ruficollis aequalis Bangs. 
Stelgidopteryx ruficollis aequalis Bangs, Proc. New Engl. Zool. Club. 
II. 1901. p. 58 (Type. Santa Marta, Colombia). 
Stelgidopteryx ruficollis uropygialis Berlepsch-& Hartert, p. 13. 
Common all along the middle and lower Orinoco throughout the 
year. Specimens were collected in Feliruary, March, ]\Iay, June and 
August, 
Two specimens in juvenal plumage were taken at Caicara during 
June. These young birds are interesting in that one does not show 
'Phacoprogne. Baird Review .Am, Birds 1805. pp. 2T2. 283. 
