CHAETURA. 373 
a. Majores: torques cervicalis albus aut integer aut interruptus. 
1. Chetura zonaris. 
Hirundo zonaris, Shaw in Mill. Cim. Phys. p. 100, t. 55 (1796)'. 
Hemiprocne zonaris, Cab. & Heine, Mus. Hein. iii. p. 83°; Scl. & Salv. Ibis, 1859, p. 125°; Salv. 
Ibis, 1860, p. 37*; Boucard, P. Z. S. 1878, p. 67°; Sumichrast, La Nat. v. p- 250°; 
Zeledon, An. Mus. Nac. Costa Rica, 1887, p. 1207; Scl. & Huds. Arg. Orn. ii. p- 11°. 
Chetura zonaris, Scl. P.Z. 8.1865, p. 609°; Sumichrast, Mem. Bost. Soc. N. H. 1. p. 562"; Salv. 
P. Z. 8. 1870, p. 204"; Hartert, Cat. Birds Brit. Mus. xvi. p. 476™. 
Cypselus collaris, Temm. Pl. Col. 195 ™. 
Fuliginoso-nigra, alis metallice olivaceo vix tinctis, torque cervicali albo, margine alari albo stricte fasciato: 
rostro et pedibus nigris. Long. tota circa 8:0, alw 8-2, caude 2:4, tarsi 0°85. (Descr. femine ex 
Duefias, Guatemala. Mus. nostr.) 
3 femine similis. 
Av. juv. quoque feminz similis, sed torque pectorali indistincto, plumis albo marginatis. 
Hab. Mexico, Tierra Caliente of both coasts, Uvero, Cordova, State of Vera Cruz 
(Sumichrast ° 1), Mirador (Sumichrast °*, Sartorius, in U. 8S. Nat. Mus.), Villa Alta 
(M. Trujillo 1), Santa Efigenia, Cacoprieto (Sumichrast °); Guatemaua (Skinner ®), 
Retalhuleu, Patzicia, Calderas (8300 feet), Duefias4, San José de Guatemala (0. 8. 
& FP. D. G.); Costa Rica (Van Patten, in U. S. Nat. Mus.), Volcan de Irazu 
(Boucard®), La Palma de San José (Zeledon™); Panama, Chitra, Calovevora 
(Arcé 11). —Soura America generally !2 from Colombia to South Brazil and 
Argentina’; GREATER ANTILLES; GRENADA??, 
Chetura zonaris has a very wide range in South America, extending over nearly the 
whole of the tropical portion of that continent from the Sierra de Mendoza in the 
Argentine Republic to Colombia, and thence northwards through Central America to 
Southern Mexico. It is also found in all the larger Antilles and in the island of 
Grenada, where Mr. Wells obtained specimens. The bird of British Guiana was 
separated by Cabanis as Hemiprocne albicincta, and a bird from Bogota by Mr. Lawrence 
as H.minor. ‘These seem only to differ from the ordinary form in being rather smaller. 
Still the Guiana birds at any rate are localized, and the fact of their small size is 
noteworthy. 
In other respects but little difference is to be found in specimens from localities 
widely separated. Central-American birds are, on an average, perhaps rather smaller 
than southern examples, but the difference is not material. Mr. Hartert notices that 
the Antillean birds have the forehead brownish grey, but none of the specimens he 
examined are in freshly moulted plumage, and the difference, if any, seems to us to 
be trivial. 
In Mexico the recorded range of this species does not extend beyond the middle of 
the State of Vera Cruz®. Sumichrast obtained specimens, which are now in the United 
States National Museum, on the Rio Seco near Cordova, and Sartorius others at the 
Hacienda of Mirador near Huatusco. Our collector Mateo Trujillo also found this 
