464 SYSTEM A TIC SYNOPSIS. — PICARI^ — CYPSELIFOMMES. 
entirely green, these having dark ends in rufus 9 ; rufous on lateral tail-feathers confined to 
their bases 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 j^^atl/cercus 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 south- 
ward. N. to Wyoming, Idaho, Utah, Nevada Sierras Nevadas of California. 
138. CALYP'TE. (Gr. KaXvTTTr], 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 ^ forked, the outer feather abruptly narrow and linear, of 9 slightly double- 
rounded. No peculiarity of primaries. Bill ordinary, as in Selaspliorus or Trochilus; black. 
No rufous color anywhere. Tail of ^ unvaried ; of 9 white-tipped. (Our only genus with bill 
ordinary and scales on crown of 
414. 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. Tail deeply 
forked ; middle feathers 
very broad and rounded, ^ig. 311. - Anna Humming-bird, cf , 
the lateral all succes- nat. size. (From Elliot.) 
sively more narrowed 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, wdthout any rufous or 
white; under parts M^hitish, nearly everywhere glossed 
over with green. Length about 3.50; wing 1.90; tail 
1.35 ; bill 0.75. 9 like the ^ excepting on head and tail. No metallic scales on head ; crown 
like back, golden-green ; throat whitish with dusky specks. Tail gently rounded, with slight- 
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. 
415. C. cos'tae. (To — Costa. Fig. 312.) Costa Humming-bird. ^ 
sides of head as well as throat, latter prolonged into a flaring ruff ; 
phire, steel-blue or purplish, not red. Tail lightly forked; middle 
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 
on head. Tail simply rounded, or with least possible central bird, cf, 9 , nat. size. (Elliot.) 
emargination ; lateral tail-feathers narrowing, but outermost not noticeably different from the 
next. Crown like back ; throat like belly, with dark specks. Middle tail-feathers like back, 
others green or gray, then black, then white-tipped. Entire under parts whitish. Compared 
with mmcB, the only other with scales on croMm in costcB is smaller: throat ruff much 
more ffaring ; glitter entirely different (not red at all) ; tail less forked, with almost acicular 
Fig. 310. — Anna Humming-bird, ^, 
nat. size. (From Elliot.) 
: Metallic scales on top and 
the iridescence violet, sap- 
FiG. 312. — Costa Humming- 
