TrUIIIU.K — Till-; TIIUI SIIKS. 



35 



Gexls 



Cahamh. 



llariiorUijuchiis ru/iis. 



Tuxnstnmn, WAt;i,F:i:, Isis, 1S31, 528. iTyi**' '/'• letnlit, VVa<:l., not Tu.ro,<^ntiin , \\\v. 



1»16.) 

 llariKs, (Ja.mhki,, Pr. A. X. S. Tliila. II. 1845, 'liW. {J\\n' /fmjHs irdicirus, (Jamu., not 



ofCoi.DFi ss, 1S:{!». ) 

 IfiirfKir/iiiinfiK.s, ('AiiAMs, Aivliiv f. Natur^'. 1848, i. i»S. iTvjm- I/hijms rniiricKs, Cxmu.) 

 McthiUtptiiiis, Kkk II. Av. Sy.st. Nat. 1850, \A. iv. (TyiH- sjii*! by (Iniy to l»t' II. I'uj'its.) 



Okx. (-'iiAii. Bill from foiflicad as \o\\\i as. or inucli ]oii;„'fr tliaii tlu' lu'ad; lu'coiniiiL; 

 Mion' ami iiioiv »U'furv»'<l in Itotli jaws as It'iii^tlu'Ufd. No indiration t»t' a iu>tch. Kit-tiis 

 with the hristh'S ('xtt'iidin^' hi'voud 

 the nostrils. Tarsus lonir and stout, 

 appnciahly exceed inj,' the luitldlc 

 toe and elaw, stron<,'ly s<Mitellalc 

 anteriorly. Wings eonsidt-raltly 

 shorter than tail, much rounded ; 

 the tirst ([uill more than hall' the 

 .second ; fourth or tilth lonjjest. 

 Tail larjje, much <rraduated ; the 

 feathers liim. 



Tlie s|)ecies of this genus 



aiv all of lai"ge size, in fact, 



enilmicing the laigt'.st of the 



Anieiioan slender-billed os- 



eine birds. All the species differ in structure, varying especially in tlie 



length of the l»ill, Jis above stated. 



It is useless to attempt a division of this genus, for tlun'e is such a gradual 



chain of charactei"s between the two extremes of form (ntfifs and crissd/is), 



that they even seem almost one species, 

 when the numerous intermediate forms, 

 shading so insensi]»ly into each other, are 

 considered. However, as this view would 

 be rather extreme, in view of the really 

 great difference of form between the species 

 mentioned, we may consider the following 

 as good species, several of them with one 

 or more varieties: rhfus, with long'uavda 

 and louijii'itstrU jis varieties, the former 

 scarcely appreciably ditferent, the latter 

 ranking as a permanent race ; oreUntus, ci- 

 nercifx, cHrvirosfri-^, the latter with one well- 

 marked variety, i^dhncri ; rnlivicns, with 

 most probably hcontei as a well-marked 

 variety, and crtssa/is. 

 The seasonal differences in the plumage often make it difficult to deter- 

 mine these several forms ; but if the following facts are borne in mind, the 



Hwrjmrliynchus rufus. 



