TBOCIIILID^— TROCHILIXJE : HUMMING-BIRDS. 



465 



falcate outermost feather instead of straight linear parallel-sided rounded-ended ; and under 

 parts less glossed with green. The 9 costcc lacks green gloss on under parts, which are 

 more white, has much narrower tail-feathers, and is smaller, in comparison with 9 onnce. 

 The 9 costce more closely resembles 9 Stellula calliope, but the latter has traces at least o'' 

 rufinis on tail and under parts. Also resembles 9 Trochilus, but has all the lateral tail 

 feathers whit('-ti])pe(l. Arizona and Southern California, and southward. 

 139. AT'THIS. (Gr. 'At^iV, J.^^/tJS, Attic; also a proper name.) Attic Hummers. Crown of (? 

 not metallic like the gorget, which is prolonged into a ruff; outer primary of (J attenuate; tail 

 gratUiated, the feathers rounded at the end, the lateral black-barred and white-tipped in bf)tl! 

 sexes (peculiar in this respect among N. Am. genera). Bill only about as long as head. Size 

 very diminutive. 

 416. A. heloi'sse. (Fig. 313.) Heloise Humming-bird. ^ : Outer primary attenuate at end, 

 with a needle-like point, as in S. platycercus, but not bowed outward. Tail graduated, the 

 central feathers, however, slightly shorter than the next, all round-ended, none notably nar- 

 rowed. No scales on crown; 



those of throat produced 

 into a ruff. Bill diminutive. 

 Above, including crown and 

 middle tail-feathers, golden- 

 green, the tail-feathers rather 

 more grass-green, sometimes 

 darkening at end or with a 

 Fig. 313. -Heloise Hummmg-bird.cf. ?,nat. size.) From Elliot.) ^^^^^j^ of rufous. Other tail- 

 feathers rufous at base, then black-barred, then white-tipped — the only case of such parti- 

 coloration in the male in Uuited States species. Gorget glancing violet, sapphire, and 

 lilac. Under parts snowy-white, glossed with golden-green, touched with rufous on flanks. 

 Very small : length 2.75 ; wing 1.25 ; tail 0.75 ; bill 0.50, 9 '■ No peculiarity of outer 

 primary. Colors much as in the $, but no gorget, the throat being white, specked with 

 dusky ; the flanks and crissum more rufous. Texas and southward ; probably also New 

 Mexico and Arizona. 



STEL'LULA. (Lat. stellula, dim. of stella, a star.) Starry Hummers. No scales on crown ; 

 those of throat confined to the tips of the lengthened feathers, thus not forming a continuous 

 metallic surface, but set like stars in a fleecy, snowy bed. Tail of $ slightly double-rounded, 

 the lateral feathers graduated, the central also shorter than the next ; middle feathers Mwlike 

 back in color ; all broad, and rather widening to near the suddenly contracted ends ; outer feather 

 slightly incurved, the others ending about as acutely as a silver teaspoon. Outer primary 

 simple. Bill longer than head, ordinary, but not entirely black. 9 like $ in' form of tail and 

 wings. Size very diminutive. 

 S. calli'ope. (Gr. KaXXioTn;, Kalliope, 



Lat. CaUiojje, one of the Muses. Fig. ' — ''^S;;^^i»*0 



'Mi.) Calliope Humming-bird. ^ : 

 Crown and back golden-green. AU 

 tail-feathers dusky, with rufous at base 

 and sliglitly pale tips. Gorget violet 

 or lilac, set in snowy-white; sides of 

 throat, and crissum, white. Below, Fig. 314. - Stellula calliope, cf, nat. size. (From Elliot.) 



white, glossed with green on the sides. Bill yellowish below. Length 2.75; wing 1.60; tail 

 1.00; bill 0.00. 9: Form of the $; color of upper parts the same. No gorget; throat whitish 

 ^^■ith dark specks ; other under parts quite strongly tinged with rufous. A white mark under 

 eye; bill light at base below. Middle tail-feathers green, not so golden as the back, ending 



3Q 



