CH^TUEA. 373 



a, Majores: torques ceriicalis albus aut integer aut interruptus. 

 1. Chsetnra zonaris. 



Himndo 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'; SaR 



Ibis, 1860, p. 37'; Boucard, P. Z. S. 1878, p. 67'; Sumichrast, La Xat. v. p. 250"; 



Zeledon, An. Mus. Nac. Costa Eica, 1887, p. 120''; Scl. & Huds. Arg. Orn. ii. p. 11'. 

 Chtptura zonaris, Scl. P. Z. S. 1865, p. 609'; Sumicbrast, Mem. Bost. Soc. N. H. i. p. 562"; Salr. 



P. Z. S. 1870, p. 204 " ; Hartert, Cat. Birds Brit. Mus. x^'i. p. 476 '^ 

 Cypselus collaris, Temm. PI. Col. 195 ". 



Fuliginoso-nigra, alis metallice olivaeeo vix tinctis, torque cervicali albo, margine alari albo stricte fasciato : 

 rostro et pedibus nigris. Long, tota circa 8-0, alae 8-2, caudae 2-4, tarsi 0-85. (Deser. feminse ex 

 Duenas, Guatemala. Mus. nostr.) 

 cJ feminae similis. 

 Av.juv. quoque feminae similis, sed torque pectorali indistincto, plumis albo marginatis. 



Eab. Mexico, Tierra Caliente of both coasts, Uvero, Cordova, State of Vera Cruz 

 {Sumichrast^ lo), Mirador (Sumichrast^, Sartorius, in U. S. Nat. J/ms.), Villa Alta 

 {M. Trujillo^^), Santa Efigenia, Cacoprieto (Sumichrast'^); Guatemala (Skinner^), 

 Eetalhuleu, Patzicia, Calderas (8300 feet), Dueiias*, San Jose de Guatemala (0. S. 

 & F. D. G.); Costa Eica (Van Patten, in U. S. Nat. Mus.), Volcan de Irazu 

 (Boucard^), La Palma de San Jose (Zeledon''); Panama, Chitra, Calovevora 

 (Arce'^^). — South America generally 12 from Colombia to South Brazil and 

 Argentina 8; Greater Antilles ; Grenada i^. 



Chcetura 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 alhidncta, 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-xlmerican 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 Eio Seco near Cordova, and Sartorius others at the 

 Hacienda of Mirador near Huatusco. Our collector Mateo Trujillo also found this 



