436 Annals of the Carnegie Museum. 



Five specimens: San Miguel, Paramo de Mamarongo, and Rio 

 Hacha. 



A fairly common bird about San Miguel and on the surrounding 

 mountains up to 10,000 feet, circling tirelessly about over the cliffs 

 and grass-covered slopes, and over the mesa around the camp. It 

 breeds in crevices among the rocks of the cliffs, into which a pair 

 were repeatedly seen to enter, at a point which was quite inacessible 

 by ordinary means. It was never seen to perch anywhere else, and 

 all the individuals secured were shot on the wing. A single young 

 bird was shot at Rio Hacha on May i, from the immense flock of 

 Barn Swallows found there at the time. This was probably a bird 

 which had strayed down from a higher altitude after the breeding 

 season. Mr. Brown met with the species at La Concepcion, at an alti- 

 tude of 3,000 feet, securing seven specimens. It is of course a Sub- 

 tropical Zone form. 



403. Orochelidon murina cyanophaea (Cabanis) . 



Three specimens : San Lorenzo. 



As shown by their soft skulls, all of these examples are immature. 

 They correspond very well to the description of Atticora cyanophtsa 

 Cabanis {Journal fiir Ornithologie, IX, 1861, 92), which Baird {Re- 

 view of American Birds, 1865, 312) identified as the young of Petro- 

 chelidon murina Cassin. Cabanis admitted that his specimens were 

 immature, but considered that the adult bird would be readily distin- 

 guishable from " Attic era" {Pygochelidon') cyanoleuca, which is 

 quite true. In the above specimens the under parts down to the cris- 

 sum are almost uniform, the throat not being appreciably browner 

 than the rest of the under surface, there being, however, a very faint 

 suggestion of a brownish pectoral band. In this respect these speci- 

 mens, therefore, would thus seem to differ very decidedly from the 

 description and figure of the young bird given by Sharpe and Wyatt 

 in their Monograph of the Hirundinida, II, 1894, 499, pi. 96. It is 

 true that in this work, as well as in Volume X of the Catalogue of the 

 Birds in the British Museum, two perfectly distinct species have been 

 confounded under the head of Atticora cinerea {cf. Ridgway, Bulletin 

 U. S. National .Museum, No. 50, III, 1904, 27, footnote). Fortunately 

 there are available (in the collection of the American Museum of Nat- 

 ural History) a small series of adults of this swallow from the Bogota 



