80 BULLETIN 86, UNITED STATES NATIONAL MUSEUM. 



CHORDEILES VIRGINIANUS VICINUS Riley. 



Chordeiles virginianus vicinus Riley, Auk, vol. 20, October, 1903, p. 432 

 (Long Island, Bahama Islands). 



Chars, subsp. — Hesembling Chordeiles virginianus chapmani, but 

 considerably smaller ; the upper surface lighter, owing to more numer- 

 ous light markings ; and the posterior lower parts more tinged with 

 buff, and thus darker. 



Measurements. — Male:^ Wing, 162.5-183 (average, 170.2) mm.; 

 tail, 92-103 (96.8) ; exposed culmen, 6.1-7.8 (6.7) ; tarsus, 13-14.8 

 (13.4) ; middle toe, 13-15 (13.9). 



Female: 1 Wing, 160.5-184.5 (173.2) mm.; tail, 91-102.5 (97.7) ; ex- 

 posed culmen, 6.1-7.5 (6.7) ; tarsus, 12.5-14.8 (13.4) ; middle toe, 

 13-15 (14.1). 



Type-locality. — Long Island, Bahama Islands. 



Geographical distrihution. — Bahama Islands. Breeds in the Upper 

 Tropical Zone, north to Abaco Island, and Great Bahama Island; 

 west to Andros Island; south to Great Inagua Island; and east to 

 Acklin Island, Watling Island, and Eleuthera Island. Reported 

 from the following islands: Abaco, Abaco Keys, Acklin, Andros, 

 Eleuthera, Fortune, Grassy Cay, Great Bahama, Great Inagua, Long, 

 Moraine Ca}^, New Providence, Southern Andros, Stranger Cay, 

 Sugarloaf Cay, and AVatling Island. Winter home unknown. 



Remarks. — This race is, in color, except for the posterior lower 

 parts, intermediate between Chordeiles virginianus chapmani and 

 Chordeiles virginianus aserriensis, but is smaller than either. From 

 the latter it differs, in addition to smaller size, in its darker upper 

 surface, the dark brown ground color being more blackish (less gray- 

 ish), the light mottlings less numerous; and in its more deeply 

 colored inferior surface, the dark brown areas of the anterior por- 

 tion more blackish, the posterior portion buff instead of nearly or 

 quite white, and with much heavier dark cross-bars. 



The female is very similar to the male, but averages lighter, some- 

 what more brownish (less blackish) above, more brownish (less black- 

 ish) on the jugulum, and a little more ochraceous or buffy on the pos- 

 terior lower parts. 



No Juvenal or first-autumn specimens have been seen, but these 

 plumages probably present the usual differences. 



Individual variation is in character about as in Chordeiles virgi- 

 nianus chapmani. The upper parts of both male and female range 

 from blackish, with light markings, much as in Chordeiles virgi- 

 nianus hesperis, to a much lighter ground color considerably more 

 profusely light-mottled, just like Chordeiles virginianus sennetti 

 The light markings above vary from deep ochraceous buff to pure 



1 Ten specimens, from the Bahama Islands. 



