THOCIIIMD.K — TIIK lIUM.MLXG-IJIIinS. 459 



Winjj, 1.05; tail, l.^'O; l.ill, .41. Gorget dull vclvcty-iMiinsnii, tlio 

 fi'alhcivs oulinvwoiis Ijuncalli the surlacc. Outer |iriiiiai-y apijaiviilly 

 with its atti'iniaU'd tip (Mirvi'il iiiwaiil. Hab. Costa itiea . \m\ Jlam m ulii } 

 B. Foathcfs of the iiictailic; Kor;,'ct nuicli cloujiatoil lalofally. 



S. rufua. Aljovu diidly fiiroiis, ovcdaid l)y y:iveii (except in S. srintir/,,, 

 wiiieii is ainiost wiiolly u-reen above); tail-lbatliei's nifoiis witli a sliall- 

 sti-oaiv of (luslvy. (joiMjel fieiy fuil. Altt'iiiiatcd tii) of <jiitLT piiinaiT curved 

 inwards. 



Wing, 1.00; tail, 1.;J0; hill, M. Riifoiis provailin.L' ahove ; frorpet 

 very hrilliaiit, Jlab. Western I'roviiiee of Xorlli America, from East 

 Ilimiholdt Mountains to the racilie. North to Sitka, south to .Miia- 



"'*'' var. r 11 fn.i. 



Winjr, 1.35; tail, 1.00 to 1.10; bill, .42. Continuous frreen above; 

 gorj,'et not brilliant, Imt with a dusty appearance. Tail less irradualed. 

 Mab. Costa Kica and Chiriqui vnr. .ic i 1, t i I la .' 



Selasphorus rufus, Sw-vinson. 



BTJPOUS-BACKED HUHMINO-BIBD. 



Trochihis rufus, Gmij.ix, Syst. Nat. I, 17SS, 407. — Aud. Oni. 15iog. IV, 183S, 555, pi. 

 coukr.ii. Schisphoriis nifiis, JSw.vixson, F.-l!or. Am. 11, 1S31, ;i:ij. — .\i-n. Birds 

 Am. IV, 1842, 200, jd. mViv. — lUiiii), I'.irds \. .\m. IS.'.S, 134. — C'oon-i: & .Sl-cki.hy, 

 164. — Dalt, & HA.NNrsrKit, Tr. I'hic. Ao. I, ISO!), 275 (Alaska). — Ki.nscii, Abli. Nat. 

 Ill, 1872, 2<J (.Vlaska). — Coo[>i:ii, Orii. Cal. 1, 1870, 355. Truchihts colhtrh, Latii. 

 (Uonapartc). 'J'nichi/us nil kens is, Kathkk (lioiiapartc). Onii/fimiu susiii, Li;sson 

 (Bonaparte). 



Sp. Cuau. Tail stronarly cnnoato and wedcie-.ehnppd. Upper parts, lower tail-covorts, 

 and breast ciiniamon. A trace of mutallic i;iecii on the crown, which sometimes extends 

 over the back, never on the belly. Throat coppery red. with a well-developed rnff of 

 the .same; below this a white collar. Tail-feathers cinnamon, edged or streaked at the 

 end with purplish-brown. Female with the rufous of the back covered or replaced with 

 green; less ciimamon on the breast. Traces oidy of metallic feathers on the throat. Tail 

 rufou.s, banded with black and tipped with white; middle feathers glossed with green at 

 the end. Tail still cuncate. Length of luale, 3.50 ; wing, 1.55; tail. 1..".0. 



IlAfi. West coast of Xorth America, anil across from Gulf of California to the Upper 

 Uio Grande Valley, and along the table-lands of Mexico, south ; in Middle Province east 

 to Ea.st Humboldt Mountains. 



' Seldsithoriix {p/cili/nTcii.i, var. Dflammuln (Sai.v.K Sdrisphnni.i flunuivi/n, Sai.vin, 1'. Z. S. 

 1804 (Costa liiou). (ncserilicd almvi' from spcciincn in Mr. Lawroiioe's coUpctioii.) 



^ Sela.y)li(inis (ni/iis var. ?) scinlilhi (C.ot'i.li). Selasphorus seinliUa, Gori.n, 1'. Z. S. 1850, 

 162, Monog. Troeli. Ill, pi. c;xxxviii. The foregoing s]HHdes are so similar in all essential 

 respects to the northern .?. p/nfi/rnviis and S. rufus, that it is exceedingly pi'obab'e that they 

 are merely the soutlK'ni forms of those sjiecies. Both dill'er in exactly the same respects fioiu 

 their northern reiu'e.sentatives, namely, in smaller size and less burnished throat, and to a very 



.slight degree only in form. The only sjieei n of the S. flammuin that we have examined is a 



badly shot male in Mr. Lawrence's collection ; what apjiears to he the outer j.iinary in this 

 speeinien is not atteminted at the tip, which is curved inward, instead of acutely atteiiuafed and 

 turned ontward as in platycercus ; the wings are badly cut with shot, however, and the iirst 

 jirimary may be wanting. 



