- BIRDS OF NORTH AND MIDDLE AMERICA. 799 
Adult female——Length (skins), 91-97 (95); wing, 117.5-125.5 
(121.1); tail, 26-32 (29.4); exposed culmen, 4.5-5 (4.6); tarsus, 
10-10.5 (10.2); middle toe, 7.5-8 (7.7). 
Islands of St. Vincent and Grenada, Lesser Antilles; also Tobago 
and Trinidad, and continental portion of South America, from 
British Guiana to eastern Ecuadér and Peru and southern Brazil. 
[Acanthylis] poliourus (not Cypselus poliourus Temminck) Bonaparte, Consp. 
Av., i, 1850, 64.—Li&otaup, Ois. Trinidad, 1866, 86, part. 
Chetura polioura CuapMaNn, Bull. Am. Mus. N. H., vi, 1894, 58 (Trinid4d). 
Chetura poliura SctateR, Cat. Am. Birds, 1862, 283; Proc. Zool. Soc. Lond., 
1863, 101 (monogr.); 1865, 611 (monogr.); 1870, 329 (diagn.); Journ. fir 
Orn., 1867, 133.—PxizeLn, Orn. Bras., i, Abth., 1868, 16.—Finscu, Proc. 
Zool. Soc. Lond., 1870, 558 (Trinidéd; crit.)—Layarp, Ibis, 1873, 389 
(Paré, lower Amazon; habits)—Scuatzer and Satvin, Proc. Zool. Soc. 
Lond., 1873, 289 (Xeberos and Chamicuros, e. Peru).—TaczaNnowsk1, Orn. 
du Pérou, i, 1884, 229.—Cory, Ibis, 1886, 473 (St. Vincent, W. I.); Cat. 
West Ind. Birds, 1892, 106, 143 (St. Vincent; Grenada).—Harrert, Cat. 
Birds Brit. Mus., xvi, 1892, 484 (St. Vincent; Tobago; Cayenne; Aunai, 
Brit. Guiana; Para; Xeberos and Chamicuros, e. Peru; Ecuadér).—Kornias- 
wap, Journ. fiir Orn., 1896, 872 (Sao Paulo, s. Brazil) —Cuarx, Proc. 
Bost. Soc. N. H., xxxii, 1905, 273 (St. Vincent; Grenada). 
[Chetura] poliura Gray, Hand-list, i, 1869, 66, no. 762.—PrtzEin, Orn. Bras., 
iv Abth., 1870, 401.—Sciater and Satvin, Nom. Av. Neotr., 1873, 95.— 
SHarre, Hand-list, ii, 1900, 92 (n. Brazil; e. Peru; e. Ecuadér; Guiana; 
Trinidad; ‘‘Lesser Antilles’). 
Chi{ztura] poliura Hartert, Das Tierreich, Podarg., Caprim., Macropt., 
1897, 76. 
[Chetura pelagica] var. poliura Batrp, Brewer, and Ripeway, Hist. N. Am. 
Birds, ii, 1874, 431. 
Acanthylis brachyura JarpINE, Ann. and Mag. N. H., ser. 1, xviii, 1846, 120 
(Tobago; coll. Sir W. Jardine). 
Chetura brachyura Cory, Auk, v,_1888, 158 (St. Vincent); Birds West Ind., 1889, 
294 (St. Vincent; Grenada).—Hrtimayr, Novit. Zool., xiii, 1906, 37 (Trini- 
dad; crit. nomencl.); Verh. Orn. Gesellsch. Bayern, viii, 1908, 148 (range; 
synonymy; descr.).—Brrizpscu, Novit. Zool., xv, 1908, 268 (Roche 
Maria, Cayenne).—Lowe, Ibis, 1909, 310 (St. Vincent; crit.). 
Chetura brachycerca ScuaTER and Satvin, Proc. Zool., Soc. Lond., 1867, 758, 
pl. 34 (Xeberos, e. Peru; coll. Sir W. Jardine >).—SciatER, Proc. Zool. 
_ Soc. Lond., 1870, 329 (crit.). 
[Chetura] brachycerca Gray, Hand-list, i, 1869, 66, no. 765. 
Suborder HETERODACTYLA. 
HETERODACTYLE CORACIIFORMES. 
= Heterodactyles BLAINVILLE, Bull. Soc. Philomat., 1816, 110. 
=Coccyges heterodactyle Sctater and Satvin, Nom. Av. Neotr., 1873, pp. vis 
103.—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1895, 480. 
= Heterodactyli SsEBoum, Ibis, Jan., 1890, 37. 
@ Four specimens from St. Vincent. 
An adult of undetermined sex from Tobago measures as follows: Wing, 121.5; tail, 
35.5; exposed culmen, 4.5; tarsus, 11.5; middle toe, 8. 
6 Now in coll. Brit. Mus.; see Sclater, Cat. Birds Brit. Mus., xvi, 1892, 485. 
