464 



SYSTEMATIC SYNOPSIS. —PICAmM^ CYPSELIFOBMES. 



138. 



414. 



entirely green, these having dark ends in rufiis <? ; rufous on lateral tail-feathers confined to, 

 their hases and of less extent than the black, while in rufus 9 the rufous equals or exceeds the 

 black area. The next to the middle tail-feather in platyoercus 9 is green, with only rufous 

 edging of outer web near base, short black end, and white tip ; in rufus 9 the same feather is 

 rufous on both webs to an extent equal to the green, black, and white spaces all together: 

 Though such details are not absolutely constant, they suffice to distinguish all the many speci- 

 mens I have examined. (See also S. rufus 9 •) Southern Kocky Mt. region, U. S. and souths 

 ward. N. to Wyoming, Idaho, Utah, Nevada ; Sierras Nevadas of California. 

 CALiYP'TE. (Grr. ka>ujrT^, Kalupte, a proper name.) Helmet Hummers. Crown of ^ 

 with metallic scales like the gorget, which is prolonged into a ruff; outer primary not attenu- 

 ate ; tail of (J forked, the outer feather abruptly narrow and linear, of 9 slightly double- 

 rounded. No pecnharity of primaries. Bill ordinary, as in Selasphorus or Trochilus; black. 

 No rufous color anywhere. Tail of ^ unvaried ; of 9 white-tipped. (Our only genus with Mil 

 ordinary and scales on crown of ,J.) 



C. an'nse. (To the Duchess of Rivoli. Figs. 310, 311.) Anna Humming-bird. $: Top of 

 head with metallic scales like those of throat, the latter prolonged into a ruff; the iridescence 



lilac-crimson, covering 

 whole head and throat, 

 except a separating line 

 through eye. TaE deeply 

 forked ; middle feathers 

 very broad and rounded, 

 the lateral all succes 



sively more nan-owed and linear, especially the outermost, 

 but all still with obtuse ends. Outer primary narrower 

 than the next, but of no special peculiarity. Back and 

 middle tail-feathers golden-green ; other tail-feathers, like 

 the wing-quills', purplish-dusky, without any rufous or 

 white ; under parts whitish, nearly everywhere glossed 

 over with green. Length about 3.50; wing 1.90; tail 

 9 like the $ excepting on head and tail. No metallic scales on head ; crown 



Tail gently rounded, vdth slight- 



415. 



Pig. 311. — Anna Humming-bird, jf , 

 nat. size. (Front Elliot.) 



-Anna Humming-bird, ^, 

 (From Elliot.) 



Pig. 310. 

 $ , nat. Bize. 



1.35; bill 0.75. 



like back, golden-green ; throat whitish vidtb dusky specks. 



est central emargination, all but the middle feathers (which are like back) green (or gray) at 

 base, then black for a space, then white-tipped (no rufous). Under parts gray, with much 

 green gloss. California, common, resident. 



C. cos'tae. (To — Costa. Fig. 312.) Costa Humming-bird. (J: Metallic scales on top and 

 sides of head as well as throat, latter prolonged into a flaring ruff; the iridescence violet, sap- 

 phire, steel-blue or purplish, not re<i. Tail lightly forked ; middle S 

 feathers broad and obtuse, lateral narrowing successively, but the 

 outermost abruptly narrowest, falcate — very noticeable. Outer 

 primary simple. Back and middle tail-feathers golden-green; 

 other tail-feathers like the wing-quills, purplish-dusky. Below 

 whitish, the belly gray, glossed with golden-green. Small: length 



3.00-3.25; wing 1.75-1.80; tail 1.00; bill 0.67. 9= No scales p,,}. 312. -Costa Humming- 

 on head. Tail simply rounded, or vrith least possible central bird; j, ? • nat. size. (Elliot.) 

 emargination ; lateral tail-feathers narrowing, but outerlnost not noticeably different from the 

 next. Crown like back ; throat like beUy, with dark specks. Middle tail-feathers like backj 

 others green or gray, then black, then white-tipped. Entire under parts whitish. Compared 

 with omncB, the only other with scales on crown in ^, costce is smaller: throat ruff much 

 more flaring ; glittel- entirely different (not red at all) ; tail less forked, with almost acicular 



