Carriker : List of the Birds of Costa Rica. 501 



Chordeiles virginianus Swainson, in Sw. Rich., Fauna Bor. Am., II, 1831, 496. 



— Hartert, Cat. Birds Brit. Mus., XVI, 1892. 610 (no record from C. R.). 



— Salvin and Godman, Biol Centr.-Am., Aves, II, 1894, 396 (no C. R. 

 record). 



Chordeiles virginianus asseriensis Cherrie, Auk, VIII, 1891, 135 (Asseri, C. R.). 



Carnegie Museum Collection: Rio Sicsola, Sept. 24, 1904; Mira- 

 valles, May 24 and 25, 1906 (Carriker). Five skins. 

 It is rather unusual that there are no records of the occurrence of 

 this species in Costa Rica. The three specimens secured on the 

 Sicsola River were shot from a flock of about a hundred birds which 

 were flying up and down the river at dusk, catching insects over the 

 sand-bars and over the water. I saw them every evening for several 

 days, after which they disappeared. 



I believe that the bird described by Mr. Cherrie was nothing more 

 than a peculiarly marked winter bird of this species, for I am very 

 certain that there is no form of Chordeiles breeding in Costa Rica. 



211. Chordeiles acutipennis texensis (Lawrence). 



Chordeiles texensis Lawrence, Ann. Lye. N. Y., VI, Dec, 1856, 167; IX, 1868, 

 120 (El Rio Tirribi [Zeledon]). — Frantzius. Jour, fur Orn., 1869, 314 (San 

 Jose and Rio Tirribi [Zeledon]). — Zeledon, An. Mus. Nac. de C. R., I, 

 1887, 120. — Cherrie, Auk, IX, 1892, 324 (San Jose, Nov. 6 and 7, 1S88 

 [Alfaro]). — Salvin, Cat. Birds Brit. Mus., XVI, 1892, 616 (no C. R. 

 record). — Salvin and Godman, Biol. Centr.-Am., Aves : II, 1894, 397 (refer- 

 ences cited). — Underwood, Ibis, 1896, 442 (Salitral, a few seen, one shot). 



Chordeiles brasilianus Cabanis, Jour, fiir Orn , 1862, 165 (C. R. [Hoffmann]). 



— Lawrence, Ann. Lye. N. Y., IX, 1868, 120 (Cabanis). 



U. S. Nat. Museum : Pigres, March 3-10, 1905 (Ridgway and 

 Zeledon), San Jose, Oct. 29, 1891 (Underwood). 



Bangs Collection : Limon, Nov. 28, 1896, San Jose, Sept. 10, 1883; 

 Bolson, Dec. 25, 1907 (Underwood). 

 The Texan Nighthawk seems to be a common and regular winter 



visitor, but frequenting the central plateau region and the Pacific 



slope more than the eastern side. There are no records for the 



species from the Caribbean slope. 



212. Nyctidromus albicollis albicollis (Gmelin). 



Caprimulgus albicollis Gmelin, Syst. Nat., ii, 1788, 1030. 



Nyctidromus albicollis Burmeister, Syst. Ueb., ii, 389. — Cabanis, Jour, fiir 



Orn., 1862, 166 (C. R. [Frantzius and Hoffman]). — Lawrence, Ann. Lye. 



N. Y., I X, 1868, 120 (San Jose and Angostura). — Frantzihs, Jour, fiir Orn., 



