1 8 BIRDS OF THE REPUBLIC OF PANAMA PART 4 



coast in eastern Chiriqui. The bird was with a mixed flock of the 

 species, the others taken included birds assigned to melanogaster and 

 pyrrhonota. 



PETROCHELIDON PYRRHONOTA MELANOGASTER (Swainson) 



Hirundo melanogaster Swainson, Philos. Mag., n.s. vol. 1, 1827, p. 366. (Real del 

 Monte, Hidalgo, Mexico.) 



Characters — Forehead dark chestnut; size small. 



Measurements. — Males (10 from San Luis Potosi, Durango, Tepic, 

 and Arizona), wing 101.4-106.2 (103.0), tail 42.4-46.5 (44.9), culmen 

 from base 7.7-9.5 (8.5), tarsus 10.5-12.7 (11.3) mm. 



Females (10 from San Luis Potosi, Durango, Sonora, Oaxaca, and 

 Arizona) , wing 101 .4-109.2 ( 104.4) , tail 40.6-45.6 (43.3 ) , culmen from 

 base 8.0-9.4 (8.7), tarsus 11.0-12.1 (11.5) mm. 



Migrant from the north. Apparently common. 



Specimens from Panama are as follows : A male and 2 females, col- 

 lected February 26, 1956, on the Savannah Santa Cruz, near the sea, 

 below Las Lajas, Chiriqui, where we encountered a small flight of Cliff 

 Swallows. On March 20, 1961, at La Jagua, 3 small flocks circled over 

 the savannas. When one group came near I collected a female of this 

 race. There is also a male in the Museum of Comparative Zoology, 

 taken by Wedel on October 6, 1930, at Puerto Obaldia, San Bias, (Gris- 

 com, Bull. Mus. Comp. Zool., vol. 72, 1932, p. 358). 



Birds from northwestern Mexico and southwestern United States 

 have been described as another race (Petrochelidon albifrons minima 

 van Rossem and Hachisuka, Trans. San Diego Soc. Nat. Hist., vol. 9, 

 no. 2, 1938, p. 5), which, however, from material seen is not separable 

 from melanogaster. 



[PETROCHELIDON FULVA (Vieillot), Cave Swallow, 

 Golondrina Pueblera 



A specimen of this species, no. 85.3.24.59, in the British Museum 

 (Natural History), is labeled "Panama. McLeannan," with no other 

 data. It is in fair condition, except for the feathers of the throat and 

 side of the head, which are considerably stained, perhaps by accident 

 during preparation. It resembles the nominate population of fulva of 

 the Greater Antilles. 



Salvin and Godman (Biol. Centr. Amer., Aves, vol. 1, 1883, p. 228) 

 listed it as follows: "A single specimen, in bad condition, sent to us 

 by M'Leannan from Panama, must ... be referred to P. fulva ... As 



