618 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
[Selasphorus] floresii Sctatzr and Satvin, Nom. Av. Neotr., 1873, 84.—MuL- 
sant, Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 227Suarre, Hand-list, ii, 
1900, 141. 
S[elasphorus] floresitti Hartert, Das Tierreich, Troch., 1900, 207 (monogr.). 
[Trochilus] floresti (not of Bourcier, 1846) Gray, Hand-list, i, 1869, 144, no. 1865. 
T[rochilus] floresii Ripeway, Man. N. Am. Birds, 1887, 315. 
Trochilus floresii CHapMan, Auk, v, 1888, 396.—AMERICAN ORNITHOLOGISTS’ 
Union, Suppl. Check List, 1889, 10; Abridged Check List, 1889, no. 431.1. 
Calypte floresi Barrp, Brewer, and Ripeway, Hist. N. Am. Birds, ii, 1874, 453. 
Calypte floresit Boucarp, Gen. Hum. Birds, ii, 1892, 5. 
Trochilus (Selasphorus) floresit Rroaway, Man. N. Am., Birds, 1887, 593. 
Trochilus rubromitratus or Selasphorus rubromitratus Ripaway, Auk, viii, Jan., 
1891, 114 (proposed as substitute for specific name floresti, if considered 
preoccupied). 
Selasphorus rubromitratus Ripaway, Rep. U. 8. Nat. Mus. for 1890 (1891), 341 
(monogr.). 
Genus CALYPTE Gould. 
Calypte 4 Goutp, Monogr. Troch., pt. xi, May, 1856, vol. iii, 1861, text to pl. 134; 
Introd. Troch., oct. ed., 1861, 87. Type, Ornismya coste Bourcier.) 
Leucaria Mutsant, Ann. Soc. Linn. Lyon, xxii, 1876, 227 (Cat. des Ois.-Mouch., 
1875, 29). (Type, Ornismya costx Bourcier.) 
Zephyritis Muusant and VERREAUX, Mém. Soc. Imp. Sci. Nat. Cherb., xii (sér. 2, 
ii), 1866, 231 (Classif. Troch., 1866, 87). Type, Ornismya anna Lesson or 
O. costae Bourcier.) 
Small to extremely small® Trochilide (length about 55-95 mm.), 
resembling and closely related to Archilochus, but differing in normal 
inner (proximal) primaries, round-tipped instead of pointed rectrices, 
lateral rectrices more strongly incurved, the adult males with the 
“gorget’’ elongated laterally and the pileum glittering metallic red 
or violet, like the ‘gorget.”’ 
Bill about as long as head or (in C. helenz) slightly shorter, straight, 
rather slender, terete or (in C. helene) broader than, deep basally; 
culmen rounded, except basally, where contracted into a distinct ridge; 
tomia smooth; mandible with the usual lateral median groove. 
Nasal operculum rather broad and convex, but hidden by appressed 
frontal feathering, which anteriorly extends much beyond anterior 
end of nostrils, forming a short obtuse point or antia on each side of 
culmen. Tarsus feathered, except along posterior side; outer toe 
slightly, the inner more decidedly, shorter than middle toe, the hallux 
about as long as inner toe. Wing about three times as long as 
exposed culmen, the outermost primary longest; all the primaries 
normal in shape. Tail of adult males one-half to nearly three-fifths 
as long as wing, emarginate (but three outermost rectrices, on each 
side, subequal in length), the lateral rectrices narrow (less so in C. 
helenz), incurved (C. coste), or the reverse (C. anna) terminally, all 
@ From xaluzth, operta. (Gould.) 
6 One species, C. helenx (Lembeye), the smallest of known birds! 
ree 
