378 CTPSELIDiE. 



Skins of this Swift sent us by our collector Arce from Chiriqui were the first that 

 reached us and were described by Salvin in 1870 i. Soon afterwards Mr. C. W. Wyatt 

 shot a specimen in a clearing in the forest near Naranjo in Colombia at an elevation of 

 2500 feet above the sea ^. Mr. Wickham obtained a specimen at Santarem on the 

 Amazons river, and Mr. Layard others at Para, where he says the bird is common 

 throughout the year *. 



We have recently acquired a specimen of the Swift found in Nicaragua and Costa Eica 

 by Mr. C. W. Eichmond and referred by Mr. Eidgway ^ and by him ^ to Mr. Hartert's 

 C. cinereiventris guianensis. This we have compared with our types of C. fumosa, and 

 can find no tangible diff'erences ; in fact the only point that we notice is that the 

 longest upper tail-coverts are slightly darker in C. fumosa, and in Mr. Eichmond's 

 specimen grayer, but the latter are somewhat abraided and the difference at most but 

 very slight. As the Costa Eica and Nicaragua bird occurs on the outskirts of the 

 northern range of C. fumosa, we have no hesitation in placing it under that name. 



Mr. Eichmond shot two specimens on the Eio Frio from a large company of Swifts, 

 and collected others on the estate of the International Plantation Company on the Eio 

 Escondido, where it appeared to be common, associating with C. gavmeri ^. 



c. Minor: mas torque cermcali ferrugineo. 

 7. Chsetura brunneitorques. 



Chtstura brunneitorques.loih:. Eev. Zool. 1844, p. 81 ' j Salv. & Godm. Ibis, 1883, p. 83%- Zeledon, 

 An. Mus. Nac. Costa Rica, 1887, p. 120 " ; Cherrie, Auk, 1892, p. 324*. 



Cypseloides brunneitorques, Hartert, Cat. Birds Brit. Mus. xri. p. 493 ®- 



Chmtura rutila, Scl. & Salv. (uec Vieill.), Ibis, 1860, p. 37, t. 3°; P. Z. S. 1869, p. 363^; Sumi- 

 chrast, Mem. Best. Soc. N. H. i. p. 562 ' ; La Nat. v. p. 250 \ 



PuligittOBO-nigra, gula et abdomine vix dilutioribus, torque cervical! undique nifo, antice latiore, et plumarum 



omnium rhachidibus uigris : rostro et pedibus nigris. Long, tota circa 5-0, alse 5-0, caudse 1*2, tarsi 0*45. 



5 mari similis, sed torque cervicali rufo nuUo. (Descr. maris et feminse ex Duerias, Guatemala. Mus. nostr.) 



Mob. Mexico {le Strange ^), Tuxpango near Orizaba (Sumichrast ^ ^), Orizaba (Sumi- 

 chrast, in U. 8. Nat. Mus.), San Miguel Molino {F. Ferrari-Perez) ; Guatemala, 

 Plains near Duenas {0. 8. & F. D. G.^); Costa Eica (Van Patten, in U. 8. Nat. 

 Mus.), San Jose {Zeledon^, Cherrie^); Panama, Chiriqui, Calovevora {Arc6). — 

 Colombia ^ ; Ecuadob2 7. 



This species was described in 1844 by Lafresnaye from specimens from Colombia ^, 

 from which country there are several examples in the British Museum. These agree 

 with a series from various parts of Central America and Southern Mexico, including 

 the birds obtained by us on various occasions at Duenas and its neighbourhood. 



In the last-named locality C. hrwimeitorgues is not unfrequently to be seen in. flocks 

 flying over the open country, especially in the wet season from July to October. On 

 cloudy rainy afternoons the birds would fly near the ground and within gun-shot, at 

 other times they would circle round like ordinary Swifts high in the air. 



