BIRDS OF NORTH AND MIDDLE AMERICA. 627 



[Calypte] helenae Mulsant, Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 227. 



Althis helenae Lawrence, Ann. Lye. N. Y., vii, 1860, 263 (crit.). 



[Trochilus] helenx Gray, Hand-list, i, 1869, 145, no. 1869. — Sharpe, Hand-list, 



ii, 1900, 140. 

 T[rochilus] helensc Ridgway, Man. N. Am. Birds, 1887, 313. 

 T[rochilus] helenae Hartert, Das TieiTeich, Troch., 1900, 203. 

 Trochilus helenx Menegaux, Rev. Frang. d'Om., no. 2, 1909, 26 (Figuabas, 



e. Cuba). 

 Orthorhynchus booihi Gundlach, Joiuti. fiir Orn., 1856, 99; 1859, 347 (Santiago, 



e. Cuba). 

 Zephyrites (Calypte) elvirae Mulsant and Verreaux, Classif. Troch., 1866, 88. 



Genus ARCHILOCHUS Reichenbach. 



Trochilus (not of Linnaeus, 1758?") of Authors. 



Cynanthus (not of Swainson, 1827) Boie, Isis, 1831, 547. (Type, Trochilus colubris 



Linnaeus .7 

 Colubris (not of Hiibner, 1793) Wood (T. C), Om. Guide, Jan., 1837, 137. (Type, 



C. rubens Wood= Trochilus colubris Linnaeus.) — Reichenbach, Syst. Av. 



Nat., 1849, pL 40. (Type, Trochilus colubris Linneeus.) 

 [Selasphorus] /?. Archilochus Reichenbach, Journ. fur Orn., 1853, Extra heft, 



1854 ("Aufz. der Colibr."), 13. (Type, Trochilus alexandri Boxircier and 



Mulsant.) 

 Ornismia (not Ornismya Lesson, 1829) Mulsant and Verreaux, M^m. Soc. Imp. 



Sci. Nat. Cherb., xii (ser. 2, ii), 1866, 235 (Classif. Troch., 1865, 91). (Type, 



Trochilus alexandri Bourcier and Mulsant.) 

 Mellisuga (not of Brisson) Sundevall, Av. Met. Nat. Disp. Tent., pt. ii, 1873, 91. 



(Type, Trochilus colubris Linnaeus.) 



Small Trocliilidse (length about 75-100 mm.) with bill as long as or 

 longer than head, rather slender, straight; six innermost primaries 

 abruptly narrower than the rest, with the edge of inner web forming 

 a more or less prominent angle subterminally; adult males with the 

 "gorget" not elongated laterall}^, pileum concolor with the back or 

 more dusky, the tail deeply emarginate, but with outer pair of rectrices 

 shorter than the next, all the rectrices except middle pair pointed 

 terminally. 



Bill as long as or longer than head, rather slender, straight, terete; 

 culmen rounded except at base where contracted into a narrow ridge; 

 tomia smooth; mandible with the usual lateral median groove. 

 Nasal operculum moderately broad and convex, mostly (sometimes 

 wholly) covered by the appressed frontal feathering, which anteriorly 

 extends to beyond anterior end of nostrils, forming a short angle or 

 antia on each side of culmen. Wing a little more than twice to nearly 

 two and a half times as long as exposed culmen; outermost primary 

 longest, strongly incurved terminally, in adult male of A. coJuhris 

 much narrower than the next and obtusely pointed terminally; six 

 innermost (proximal) primaries abruptly, and in adult males con- 



« The type of Trochilus Linnaeus, according to recent authorities, is Trochilus polyt- 

 mus Linnaeus (type of Aithurus Cabanis and Heine), as designated by Gray in 1840; 

 Bee Allen, Bull. Am. Mus. Nat. Hist., xxiv, 1908, 12. 



