502 Bulletin American Museum of Natural History. [Vol. XXXVI, 



in the wings than in Magdalena, Trinidad, east Venezuela and Demerara 

 specimens, tlie tertials being not only margined, but broadly tipped with 

 white. In this respect they agree, however, with specimens from Maripa, 

 Venezuela and the Potaro River, British Guiana, and possibly the differ- 

 ence noted may be individual or due to age. Should it be racial, the name 

 wquatorialis ^ (Lawr.) would be available for the form with white-tipped 

 tertials, Lawrence's type (A. M. N. H. No. 40227) showing this character. 

 La Playa, 7; La Morelia, 12. 



(3331) Hirundo erythrogaster Bodd. 

 Hirundo erythrogaster Bodd., Tabl. PI. Enl., 1783, p. 45 (Cayenne). 



Represented by two specimens in winter plumage, one a female taken 

 August 20, 1912, at Quibdo by Mrs. Kerr, the other, unsexed, taken at 

 Juntas de Tamana, Dec. 19, 1911, by Allen and Miller. A third specimen, 

 a female in nuptial plumage, was taken by Manuel Gonzales, a native whom 

 we employed, at La Olanda on the Bogota Savanna, May 13, 1914, a month 

 after the species reaches the latitude of New York City. 



Quibdo, 1; Juntas de Tamana, 1; La Olanda, 1. 



(3335) Progne chalybea chalybea (Gmel). 



Hirundo chalybea Gmel., Syst. Nat., I, 1789, p. 1026 (Cayenne). 



? Progne chalybea Cass., Proc. Acad. N. S. Phila., 1860, p. 133 (Carthagena). 



Progne leucogastra Wyatt, Ibis, 1871, p. 323 (Catamucho). 



Progne chalyheia Scl. & Salv., P. Z. S., 1879, p. 495 (Remedies). 



Progne chalybea chalybea Hbllm., P. Z. S., 1911, p. 1093 (N6vita). 



Of general distribution in the Tropical Zone though we have no speci- 

 mens from the Pacific coast region. In the amount of steel-blue on the 

 breast and sides, a male from Florencia evidently approaches a specimen 

 from Napo, Ecuador, described by Ridgway (Bull. U. S. N. M., 50, III, p. 

 50). A similarly marked specimen from British Guiana, where typical 

 chalybea is found, indicates, as Ridgway {I. c.) suggests, that this type of 

 coloration is individual, and suggests the common origin of P. chalybea 

 and P. dominicensis. 



Cali, 2; Malena, 3; Algodonal, Magdalena River, 1; Florencia, 2. 



(3336a) Phaeoprogne tapera immaculata Chapm. 



Phceoprogne tapera immaculata Chapm., Bull. A. M. N. H., XXXI, 1912, p. 156 

 (Chicoral, Col.). 



» Hirundo sequalorialis Lawr., Ann. Lye. N. H. N. Y., 1867, p. 400, "Quito" [ = Napo region?]. 



