BIRDS OF NORTH AND MIDDLE AMERICA. 637 
pair of rectrices 6.3 shorter, the lateral one only 3.8 wide in middle 
portion.” 
Trochilus violajugulum Jerrrizs, Auk, v, no. 2, April, 1888, 168 (Santa Barbara, 
California; coll. J. Amory Jeffries); vi, 1889, 223.—Cuapman, Auk, v, 1888, 
396.—AMERICAN ORNITHOLOGISTS’ Union, Suppl. Check List, 1888, 10, no. 
429.1; Auk, v, 1888, 396; Abridged Check List, 1889, no. 429.1; Check List, 
2d ed., 1895, no. 429.1.—Ripeway, Rep. U.S. Nat. Mus. for 1890 (1891), 329, 
pl. 38, fig. 2 (monogr.); Man. N. Am. Birds, 2d ed., 1896, 598.—Bovucarp, 
Gen. Hum. Birds, ii, 1892, 3—Brnprre, Life Hist. N. Am. Birds, ii, 1895, 
201. 
T[rochilus] violajugulum Hartert, Das Tierreich, Troch., 1900, 202. 
[Trochilus] violijugulum SHarre, Hand-list, ii, 1900, 140. 
Genus TILMATURA Reichenbach. 
Tryphxna 6 (not of Ochsenheimer, 1816) Goutp, Mon. Troch., pt. i, June, 1849; 
Introd. Troch., oct. ed., 1861, 96. (Type, Ornismya dupontit Lesson.) 
Tilmatura RetcHensBacnH, Autfz. der Colibr.,¢ 1854, 8; Troch. Enum., 1855, 5. 
(Type, T. lepida Reichenbach=Ornismya dupontii Lesson.) 
Small Trochilide (ength, including long tail of adult male, about 
58-100 mm.), resembling Nesophlox, but with bill shorter than head, a 
conspicuous white or buffy patch on each side of rump, the adult male 
with lateral pair of rectrices abruptly contracted near tip, and three 
outer rectrices tipped and banded with white. 
Bill (unfeathered portion) shorter than head, straight, slender, 
terete; culmen rounded, scarcely contracted basally; tomia smooth; 
mandible with the usual lateral median groove. Nasal operculum 
broad and convex, nude, but covered by decumbent frontal feather- 
ing, which extends anteriorly to about anterior end of nostril, forming 
a very short obtuse point or antia on each side of culmen. Tarsus 
naked on inner and posterior sides, feathered on anterior and outer 
sides; outer toe apparently about as long as middle toe, the inner 
slightly shorter; hallux about as long as inner toe or slightly shorter. 
Wing about three times as long as exposed culmen, the outermost 
primary longest. Tail of adult male nearly one and a half times as 
long as wing, forked for about three-fourths its length, the outer pair 
of rectrices abruptly contracted terminally, but with rounded, slightly 
expanded tip; in adult female about half as long as wing, deeply 
emarginate, but with outermost rectrix shorter than the next. 
Coloration.—Above rather dark metallic bronze-green, including 
middle rectrices; a conspicuous spot of white or buff on each side of 
rump. Adult male with chin and throat black, the feathers tipped 
with dark violet-blue, chest white, the longer rectrices tipped and at 
a The tip of the bill having been shot away, the length of the culmen can not be 
given; the length of the bill from the base of the culmen to the tip of the mandible, 
however, is 17.2 mm. 
b Tebdacva, nom. prop. (Gould.) 
¢ A nomen nudum in ‘“‘Aufz. der Colibr.”’ 
