334 



NmUTII AMEKirAN I Jin OS. 



OiNLs PETROCHELIDON, Cabams. 



Pdrochclidnu, Cm;. Mus. H.in. Ib.'^d, li>:>l, 47. (Tyiu', lliruiult inelunogastcr, Swains. 

 = 7'. atraiusuiii, Sci..) 



Okx. ('iiai:. Uill stout ami deep, soiiu'wlmt as in Pnxjne. Nostrils cntirelv superior, 



OJX.MI, without overliaMjriii<f 

 iiR'iul)rane on the imior (or 

 ii]>|H'r) side, but somewhat 

 overhung by short l)ristles, 

 seen also aloM;_' base of inner 

 mandible and in chin. Legs 

 stout; the tarsi short, not ex- 

 eeedinir the middle toe exelu- 

 sivc of its elaw ; feathered all 

 round for basal third or Iburth, 

 though no feathers are insert- 

 ed on the posterior faee. Tail 



falling short of the <-hised wings, nearly square or slightly eniarginate ; the lateral feathers 



broad to near the ends, and not attenuated. 



Of this L^emis as restricted we have hut one species in Xorth America, 

 althoii^li several others occur in the West Indies and the southern parts of 

 the continent. All have the hack steel-hlue, with concealed streaks of white ; 

 the runii>, crissuni, and a narrow nuchal band, and usually the forehead, 

 chestnut. 



Pi trorlii 'iilon lunifnitis. 



Petrochelidon lunifrons, BviiiD. 



CLIFF SWALLOW; EAVE SWALLOW. 



Hlruit'Io hinifrnn.% Say, bong's Kxji. II, 182:3, 47 ^IJocky Mts.). — Cassix ; Ri:i:wF.n, N". A, 

 Ool. I, ]8.".7, 04, pi. V, no. <;8-7:'> (eggs). - IUn:u, Bird.s N, Am. 1858, 309. — Law- 

 RENTE, Ann. X. Y. Lye. ISO , ;}17 (Panama K. 1{. ; wiiiterK — Veimmll, Pr. Host. N. II.. 

 Soc. 18«)4, '270 (migration and history). — Loirn, Pr. K. A. Inst. Woohvidi, IV, 18(34, 

 16 (P.r. Tol. : nesting). -r.M.i«Eii& SniuKY, P. W. \{. XII, ii, 184 (Wash. Terr.). — 

 Dai.l & l»ANNisTi;u, 270 (Alaska). — CoorKK, Orn. Cal. I, 1^7n, 104. — Samtels, 2."»G. 

 Pcfroc/uIi(foii I. IiAii;i», Peview, 18t>4, 288. //. opi/cx, Cusu>s, 1824. //. rcffpub- 

 liamn, At'i). 1824. H./nlrn, linx, (not of Vikfi.i.ot). — Arn. Orn. liiog. I, id. Iviii. 

 — Ib. Birds Am. I, pi. xlvii. —Maxim. Call. Jour. VI, 1858, 100. 



Cp. Char. (Xo. 1S,:)2'J ^.) Top of head glossy black, with greenish lustre: baek and 

 scapulars similar, but rather tluller, an<l somewliat streaketl by tlu' a)»pearanee of the white 

 sides of the feathers, — the bases of the feathers, however, bring plinnbeons. Chin, throat, 

 and sides of head, ehestnut-l)rown. this extending nnmd on the napi' as a distinct eon- 

 tinnous collar, which is boumled posteriorly by dull grayish. The chestnut darkest on the 

 chin, with a rich purplish tinge. Rump above ami on sides paler chestnut (sometinn •. fad- 

 ing into whitish). U[)))er tail-coverts grayish-lmAvn. edged with jialer. lighter than the 

 plain brown of the winiis and tail. Forehead, for the length of the bill, creamy-white, 

 somewhat lunate, or extending 'n an acp*e angle, a little over the eye ; a very narrow 

 blackish frontlet ; loral regit)n dus cy to the bill. A j)ateh of glossy black in the lower }. .rt 



