FALCONID.K — THE FALCONS. 



127 



An egg mtlio Sinitli,s<.nia.i Collcctiou (ir,,;-.i»(ij, taken at Gilmer, Wyomin-^ 

 iorntury, May l;], 187(», by Mr. H. R. Durkoe, lias a gmun.l-culor of pink! 

 ish-wl.ite, varying m tw.. eggs to .liluted vinaceons, thickly spotted and 

 niiin.tely Ireckled with a single shade of a pniplish-rulous. In shape they 

 iuv. nearly elliptical, the smaller eml I.eing scarcely more pointed than the 

 larger. They measure 2.27 by l.GO to 1.G5 inches. The nest was built on 

 the edge ot a clifi: Its eggs were also taken by Dv. IJayden while with 

 ( iiptani Uaynolds, at Gros Vent Fork, June 8, 18G0. 



Subgenus FALCO, McKnniNG. 



/1<to Mcnnn.NG, 1752. (Ty,K,, Falco i^regrimcs, Gm. = F. communis, Gm.) 

 lilujndwdoii, NiTzsfii, 1840. (In part only.) 

 Euhicnu; Wi:nn. & MvAvm., 1844. (Type, Fako—i) 

 Ic/himu, KAur, 1844. (Typo, Fa Ico frontalis, Daud.) 



The following synopsis of the three American species of this subgenus 

 may serve to distinguish them from each- other, though only two ofUiera 

 (/. aaran/uis and F. rufujulavis) are very closely related. The comparative 



F. auranlius. 



NAT. SIZE 



fil803,S. ^"^ 



F. nitrantins. 



68814,?. 



lip 



F nifitfiilaris (imt. !>\k}. 



88814,^. 

 F. Tufieii'arh {nut ejie). 



characters of the seveml geographical races of the otlier one (/' comnmnk') 

 which IS cosmopolitan in its habitat, being included under th hrof St 

 species, may explain the reasons why they are separated from eucrother 



