448 NOIiTII AMKKICAN lUUDS. 



imich smaller, iimn' linear, iind nearly eijnal in width faltont tliat of inner 

 web of the t'nurth i, sn tliat the interval hetween tiie tilth Jind tnmth is from 

 two to live times as {^reat us that between the tilth and sixth. The inner 

 weh of these reduced primarit's is also emar^inated at the end. This char- 

 ueter is even sometimes seen in the females, hut to a less extent, and may 

 serve to distiii^'uish both tolnhrU uud (dinimlii from other allied species 

 where other marks are obscured. 



The following <liagnosis will .serve to distinguish the species found in the 

 Tnited States : — 



Common Cii,\i{.\rTKKS. Al^ovt' and on the sides motallio green. A inflT of 

 nietallie fi-afheis fiitin the l)ill to the breast, behind whieh is a whitish collar, 

 eonlluent with a narrow abdominal stripe; a white spot l)ehind the eye. Tail- 

 feathers withont hjfht inar^'ins. 



Tail deei)ly lorke<l (..'iO o\' an inch). Throat brii,dit eoppery-red from the 

 chin. Tail of I'cniale n>inid«'d, eniari^inated ..... T. rohihris. 



Larger. Tail slii^htly lurked (.10 of an inch). Throat gorget with violet, 

 steel, green, or bine rellections behind; anteri<»rly opaijue velvety-black. 

 Tail of female graduated ; scarcely eniarginated .... T. aJexundri. 



Trochilus colubris, Linn/Eus. 



BUBT-THBOATED HUMMIKO-BIBD. 



Troi'hiht.HenhihrLs Linn. .Syst. Nat. 1, 17»i»), 1!»1. — Wils».n, Am. Orn. II, 1810, 26, pi. 

 .\. — Ari». ()n>. I'.iog. I, 1832, 24S, j.j. xlvii. — In. Uinls Am. IV, 1842, 1«J0, \A. 

 ccliii. - Baii!I», IWrds X. Am. 18r»8, 131. — .Max. (.'ab. J. VI, l,'i4. — Samuels, 111. 

 — Ai-i.KN, W. Klii. 3(»1. Onusifiiin coltihris, Dkvii.i.k, llcv, ot Mag. Zool. May, 1852 

 (habits). Trtn-hilu.s annlijnstrr, L.vwuknck (alroholic specimens). 



Sp. Ciiau. Tail in the male deeply forked ; the feathers all narrow lanceolato-aonto. 

 In the female slightly rounded and emarginate; the feathers l)roader, though pointed, 

 l^fale, uniform metallic green al>ove; a ruby-red gorget (Idackish near the bill), with no 

 conspicuous ruff; a white collar on the jugulum ; sides of bodv i:re«'nish : tail-feathers 

 uniformly brownish-violet. Female, without the red on the throat; the tail rotmded 

 and emarginate, the inner feathers shorter than the outer: the tail-feathers banded with 

 black, and the outer tipped with wliite ; no rufous or cinnamon on the tail in either sex. 

 Length, 3.2.") ; wing, 1.00; tail, 1.2.'>; bill. .(m. Yoiirnj males are like the females; the 

 throat usually spotted, sometimes with red; the tail is, in shape, more like that of the old 

 male. 



Hab. Eastern Xorth America to the high Central Plains : soutli to Brazil. Localities: 

 Cordova {^r\.. V. Z. S, 18.">f;. 288) : Cruatemala (Set.. Ibis. T. 120) ; Cuba (Cab. J. IV, 

 98; (lundl. Rep. I, 18(^0, 21)1); S. E. Texas (Dkksseh, Ibis, 18(55, 470, breeds); Veragna 

 (Salv. p. Z. S. 1870, 208). 



The Trorhilus aurn'r/rfsfrr (runrif/Kh/ ?) (A' T^awrence, descril>ed from an 

 alcoholic specimen in the Smithsonian C(dlecti(»n, differs in havinj]; a 

 green throat, becoming golden towards the chin. It is quite probable, how- 

 ever, that the difference is the residt of immersion in spirits. 



The red of the throat appears i)aler in some Mexican and Guatemalan 



