BIBDS OF NORTH AND MIDDLE AMERICA. 561 



d. Paler, with lighter markings on upper parts finer and paler buffy, slightly 

 larger (wing averaging 170.2 in male, 173.2 in female). (Bahama Islands.) 



Chordeiles virginianus vicinus (p. 575). 



dd. Darker, with lighter markings on upper parts coarser and more deeply buffy 



or ochraceous; slightly smaller (wing averaging 168 in male, 168.7 in 



female. (Greater Antilles.) Chordeiles virginianus minor (p. 576). 



aa. Outermost (tenth) primary "Qot longer than ninth, usually shorter; white patch 

 on primaries occupying only four outer quills and situated more distally, usually 

 opposite tip of fifth quill (sixth from outside), never anterior to tip of fourth 

 (seventh) quill; secondaries, primary coverts, and proximal primaries (usually 

 basal portion of distal primaries also) always spotted with cinnamon-buff; lighter 

 bars on under wing-coverts cinnamon-buff, broader than the dusky bars. ( Chor- 

 deiles acutipennis.) 

 b. Smaller (wing averaging less than 170 rum. in male, less than 165 mm. in female), 

 c. Smaller (wing averaging 163 in male, 160 in female; tail averaging 93.6 in male, 

 92.7 in female); markings on upper parts less strongly contrasted, dusky 

 bars on under parts relatively broader, and white subterminal band on tail 

 in male narrower. (South America.) 



Chordeiles acutipennis acutipennis (extralimital).o 

 cc. Larger (wing averaging 169.4 mm. in male, 162.1 mm. in female; tail aver- 

 aging 99.1 in male, 94.4 in female); markings on upper parts more strongly 

 contrasted, dusky bars on under parts averaging narrower, and white sub- 

 terminal band on tail in male averaging broader. (Panama to southern 



Mexico.) Chordeiles acutipennis micromeris (p. 577). 



66. Larger (wing averaging more than 175 mm. in male, more than 168 mm. in 



female; tail averaging more than 107 mm. in male, more than 102 mm. in 



female). 



c. Larger: Wing averaging 183,4 in male, 175 in female; tail averaging 111.6 in 



male, 106.1 in female. (Panama to southwestern United States, breeding 



from central Mexico north ward.)... Chordeiles acutipennis texensis (p. 581). 



cc. Smaller: "Wing averaging 176.2 in male, 168.1 in female; tail averaging 107.1 



in male, 102.3 in female. (Lower California.) 



Chordeiles acutipennis inferior (p. 580). 



a Caprimulgus acutipennis Boddaert, Tabl. PI. Enl., 1783, 46 (Guiana; based on 

 Crapaud-volant ou Tette-chevre de la Guiane Daubenton, PI. Enl., pi. 732, and L'En- 

 goulevent acutipenne de la Guyane Buffon, Hist. Nat. Ois., ed. Montbeillard, xii, 264). — 

 Chordeiles acutipennis Cassin, Proc. Ac. Nat. Sci. Phiia., v, 1850, 187; Hartert, Cat, 

 Birds Brit. Mus., xvi, 1892, 614. — {Caprimulgus] acutus Gmelin, Syst. Nat., i, pt. ii, 

 1789, 1031 (Guiana; based on L' Engoulevent acutipenne de la Guyane Buffon, etc.). — 

 [Chordeiles] acutus Bonaparte, Consp. Av., i, 1850, 63.— Caprimulgus semitorquatus 

 (not of Gmelin) Maximilian, Beitr. Naturg. Bras., iii, 1830, 330.— [Caprimulgus] bra- 

 silianus Gmelin, Syst. Nat., i, pt. 11, 1789, 1073 (Brazil; based on Le Tctte-chevre 

 tachete du Bresil Brisson, Orn., ii, 4&3) .—[Chordeiles] brasilianus Bonaparte, Consp. 

 Av., i, 1850, 63.— Caprimulgus brasiliensis YieiWot, Enc. M^th., 1823, 542 .—[Chordeiles] 

 brasihensis Gray, Hand-list, i, 1869, 62, no. 703.— Caprimulgus noitibo Vieillot, Nouv. 

 Diet. d'Hist. Nat., x, 1817, 241.— Chordeiles labecula-tus Jardine, Ann. and Mag. N. H., 

 xviil, 1846, 118 (Tobago; type now in coll. Brit, '^ina.).— [Chordeiles] labeculatus 

 Bonaparte, Consp. Av., i, 1850, 63 .—[Chordeiles] sapiti Bonaparte, Consp. Av., i, 1850, 

 63 (South America; ex Caprimulgus sapiti Natterer, manuscript).— CapnmwZ<7tw 

 himndinaceus Spix, Av. Bras., ii, 1825, 2, pi. 3, fig. 1 (sylvis fl. Solimoens).— [CW- 

 deilcs] hirundinaceus Gray, Hand-list, i, 1869, 62, no. 104.— Caprimulgus stcnopterus 

 Pelzeln, Orn. Bras., 1 Abth., 1868, 14, footnote (Bahia, Bi&zil).— [Chordeiles] stenoptenis 

 Gray, Hand-list, i, 1869, 62, no. 708. 



3622°— Bull. 50, pt 6—14 36 



