460 SYSTEMATIC SYNOPSIS. — PICARLA — CYPSELIFORMES. 
If a female or young, he must refer to the er descriptions. He will be much assisted by 
the figures of generic details, drawn from nati 
monograph, and kindly loaned to me by Prof. Baird. 
Analysis of Genera and Species of N. A. Trochilida (adult males). 
Frontal feathers not fully covering nasal scale. Tarsi feathered. Tail emarginate. Bill broad, in part 
flesh-colored. 
Nasal scale entirely naked. 
White stripe on head. Crown, face, and chin, black. Tailrufous . . . . Basilinna xantusi 
Nasal scale partly naked. 
Crown green; throat blue; tailblackish, . . ..... 2... ... . - Lache latirostris 
Throat green; tailrufous; sidesrufous. . ........ =. . . Amazilia cerviniventris 
Throat green; tailrufous; sidesgreen . ....... +... . . Amazilia fuscocaudata 
Frontal feathers covering nasal scale. 
Bill not perfectly straight. 
Bill curved throughout. ‘Tail forked, with almost filiform lateral feather . . Calothorax lucifer 
Bill nearly straight. Length over 4inches. Throat and breast green . . . . Eugenes fulgens 
Bill perfectly straight. Length under 4 inches. 
Crown as well as throat with metallic scales. 
Scales lilac-crimson. Lateral tail-feather parallel-edged . + + . « Calypte anne 
Scales violet. Lateral tail-feather acutely faleate . . . . . ... =. =. . Calypte coste 
Crown simply glossy, like back; throat with metallic scales. 
Middle tail-feathers unlike back in color. 
Scales confined to ends of throat-feathers, their bases snow-white . . . Stellula calliope 
Middle tail-feathers like back in color; throat-scales forming a continuous surface. 
Lateral tail-feathers white-tipped ; none acuminate, Outer primary abruptly emarginate 
and acute. . .. so is tye | Abts Vheloise, 
Lateral tail-feathers mae iktestipped: some or at Beraueata. 
Throat-scales coppery-red; back and tail greenish; outer two primaries acute, falcate; 
all the tail-feathers acuminate, the two outer acicular . . . . . Selasphorus alleni 
Throat-scales coppery-red; back and tail mostly chestnut; primaries as in S. rufus; 
next to middle tail-feather abruptly notched . .. .. . . . Selasphorus rufus 
Throat-scales lilac-red; back golden-green; 1st primary emarginate, turned outward, 
next obliquely ieee UigeNG re i) ja, - . + . Selasphorus pieeieanene 
Throat-scales opaque black, becoming violes + posteriorly; back golden-green ; primaries 
not peculiar . . . .. . Trochilus alexandri 
Throat-scales cubyeree puck paideres green. Primerica not peculiar (Eastern) 
Trochilus colubris 
oy Mr. R. Ridgway for Mr. D. G. Elliot’s 
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134. BASILINNA. (Gr. Baciduwva, basilinna, a queen.) QuEEN Hummers. Head appearing 
more globose than in any other N. Am. genus, in consequence of the non-extension of the 
feathers on base of upper mandible, where they do not reach 
opposite those on chin, leaving the turgid nasal seale entirely 
exposed. Bill broad at base, tapering regularly to tip, with dis- 
tinct supra-nasal grooves; scarcely longer than head, straight. 
Tarsi feathered. Tail ample, all the feathers broad and 
rounded; nearly even, in g a little double-rounded by short- 
ness of both lateral and central pair of feathers, in Q simply a 
little rounded. No peculiarity of primaries. Sexes nearly alike 
in form; @ lacking the green gorget of @ ; bill in both sexes 
Fic. 300.—Xantus Humming- largely flesh-colored; @ with white stripe on head; no white 
bird, nat. size. (From Elliot.) 
ranged next after Iache.) 
on tail of either sex. (N.B. This genus would be better 
407. B.xan'tusi. (To L.J. Xantus de Vesey. Fig. 300.) XMAntTus HumMING-Birp. Adult ¢: 
Above, and the throat, metallic grass-green ; below, cinnamon-rufous; face blue-black; a 
white stripe through the eye ; wings purplish-dusky ; tail purplish-chestnut, the central feathers 
glossed with golden-green; bill flesh-colored, black-tipped. 9: Shining green above, including 
central tail-feathers ; below, and the face, pale rufous, whitening about the vent, and the sides 
greenish ; head-stripe rufous, whitening on the auriculars; tail-feathers, except the centrai, 
