cuiiviD.E — Tilt: cuuws. 2:j3 



Species and Varieties. 



RAVENS. Fonthor'^ nf tlu' i-liin uikI ♦liroat siillriifd. elouir.itpd. narrow and 

 luiuM'ultttt', witli tlH'ir outliiu's vitv liistinct. 



I. C. corax var. oarnivorus. I.t'iiirtli altoiit 'J-'kOO; wiiij,'. 17.'»"; 

 tail, 10.<M>; ^Taflilatinii ol tail. I.»i0 to 'J.IO. Ki'atluTS (»l" the nock 

 an«l breftj»t li;;ht j^iay IxMu'atli s.iitart*. llnh. Whole ol" North 

 Aint'iica : <iMiif('!iiala aii<l Mcxiro. ilaif in Kastciii I 'iiitcd States. 

 'J. C. cryptoleucus. L(ii;.'th ahont '-'I.OO; wiiijr. 14. (Mi; tail, 

 H.'j«>; ^.jiatltiatiuii ol tail, alioiit l.'J-'. Kcaihors of nt'ck and l)r«'a>t 

 snowv-whitt' iK-nuath siuracf. Unh. Lluuo E!Sta«ado, or 8takt*d 

 riain of Texas ; Ari/ona; Colorado. 

 CROWS. Feathers of chin and throat .soft, short, hroatl. olituse, and with 

 their wehs bleiid< d. 



A* Anfjle ol' nioiith ft-athered — North Aineriean ('rows. 



f^ Tarsns lon^'er than tlu* hill. First «|iiill not lonu'er than tenth. 



;5. C. americanus. The ^rloss of the |)hnna<:e |tnij»lish-violet. and 

 haidly pereeptihlo on head and neek. iiiiddlf toe and elaw rather 

 shorter than tarsns. niea-ured Ironi l»e;/innin^' of sentelhe. 



Wiii^'. I'JUo; tail. T.'-'H: ruliiun. l.S.",: tarsus, I'.tMl; middle 

 toe, l.4.'>: w inLf-forniula, 4, o. .'>, 0, 2; first (piill ♦■(pial to 

 tenth. Ihih. North Ameriea generally . var. n m e r i r a „ n s } 



Win-. I2.r>(»: tail, T.'-'O; eulnieii. 2.10; tarsns. 2.:5(> : middle 

 toi', l.(JU. Winu-fornnila ? (moultinj,'). Ilah. S»»Mth Florida. 



var. Jlo /■ i (I (( II US . 



4. C. ossifragUB. The Ldoss of plinnafre violaeeous-hhu', almost 

 green on the head, neek, an<l breast, where very j»ei(e|»til>le. 

 Middle toe and elaw longer than tarsns. as above. Winff. lO.-'iO; 

 tail, G..')0 : eulmen, 1.55; tarsns, !.().'>: middle toe. 1..'3."}. Winir- 

 fornnila, 4. ."], ."i; first qnill .sliirhtly .shorter than tenth. Ilah. 

 Atlantic Coast of the United States. 



b. Tarsus shorter than the bill. First (luill lonjrer than tenth. 



5. C. caurinuB. Gloss of the phimaL'^e as in (triterirainis, but 

 deeper. Win<r, 10..')(): tail, (>,4(»; eulmen, \/X); tar.sus, 1.70; mid- 

 dle toe, 1.2.'). Win<r-forinula, 4. 3. .'). Hah. Northwestern coast 

 of North Ameriea. 



G. C. mexicanus.- Plnmaee hiirhly lu.«?trons. blended. Soft bur- 

 nished steel-blue, ehani:in,<r to violet on the crown, and with a 

 greenish cast on lower parts. ^Ving, 0.00; tail, 0.50; eulmen, 

 l.GO; tarsus, 1.20; middle toe. I.IO. Wing-formula, 4, 3.5. 

 First fpiill very much hmger than tenth. Hab. Western Mexico 

 (Mazatlan, etc.). 

 B. Angle of month nake<l — West Indian Crows. 

 a. Tarsus much shorter than the bill. 



1 The nioa.sui enionts given are of a California .specimen, in order the better to show the great 

 distinction to be made iH-tweeii this species and caurinu.% which is prol)ably not found in 

 California, l>eing a more northern species, and having the coa.st of Wa-sliington Territory, or 

 perhap.s Oregon, as about its southern limit. 



2 C. vicu:icanvs, Gmki.. Sy.st. Nat, p. 375. This .species is perfectly di.stinct from all the 

 others. The plumage has a .silky blended character, and very high lustre, almost exactly as in 

 the larger (Jraklcs {Qidsodus major, etc.). 



VOL. II. 30 



