CYANUEUS STELLERI VAR. MACKOLOPHUS. 215 



G(in;ihixsfcll>ri, Vieill., Euc. Meth. 893; Diet. 1817, 481.— Sw. & Rich., F. B. A. ii, 

 l.Nil, 294 (nut pi. 54?).— AUD., S.yii. 1839, 154; B. Am. iv, 1842, 107, ))1. 230. 



Cijainiras .^Mlcri, Sw., F. B. A. ii, 1831, 495.— Bd., B. N. A. 185a, 581.— Hekkm., P. R. R. 

 Kf|>. X, 1859, pt. vi, 55.— Coop. & Scck., N. H. Wnsli. Ter. 18(;o, 214.— 

 Loi;d, Pi-. Roy. Arty. lust, iv, 18(i4, 122 (British Colnnibiii, nesting).— Dall & 

 Banx., Tr. Cbic. Acad, i, 1869, 286.— Coop., B. Cal. i, 187U, 298 (iiic!n(k-s froti- 

 /rt/(.s).— CotTE.s, Key, 1872, 165. — RiDGW., Am. Jouru. v, 1873, 43.— B. B. & R., 

 N. A. B. ii, 1874, 277, pi. 39, tig. 1. 



Pica !ilclli:)i, Wagl., Syst. Av. 1^^27. 



Cijciiiocorax ateUeri, BoiE. — Bp., List, 1838, 27. — Finsch, Abh. Nat. iii, 1872, 40 (Alaska). 



Ci/aiiovilta r.tcUcri, Stj:icke.— Cau., Mns. Heiii. 1851, 221.— Nkwu., P. R. R. Rep. vi, 

 1857, 85. 



Uyanoyurralus uteUcri, Bp., Cousp. Av. i, 1850, 377. 



b. frontalis. 



Cijanura .tteUeri var. frnvfaJis, RiDGW., Am. Jouni. v, 1873, 43. — B, B. & R., N. A. B. ii, 

 1874,279, pi." 39, lig. 2. 



c. macroloplius. 



Garndns slclleri, Sw. & Rich., F. B. A. ii, pi. 54 (the text refers to true sfeUeri ; the 



plate seems to represent var. niacrolophuH). 

 Cyaiiocorax 8felhri, Wt)Oi>ii., Sitgr. Rep. 1853, 77. 

 CtjaiiociUa macrolopha, Bd., Pr. Pbila. Acad. 1854, 118. 

 V'ljanura macrolopha, Bd., B. N. A. 1858, 582.— Kenn., P. R. R. Rep. x, 1859, 32.— CouES. 



I'r. Pbila. Acad. 1866. 92 (Aiizoiia).— Coop., B. Cal. i, 1870, 300.— Stev., U. S. 



Geol. Siirv. Ter. 1870, 465.— Meim;., ibid. 1872, 688.— CoUES, Am. Nat. v, 1871, 



770 (biography).- Elliot, B. N. A. pi. 17.— Aiken, Pr. Bost. Soc. 1872, 205. 

 Cyanuri .slclleri var. macrolopha, AiJ.v.s, Bull. M. C. Z. 1872, 178.— CouES, Key, 1872, 165, 



lig. 107.— B. B. & R., IS'. A. B. ii, 1874, 281, pi. :<\), tig. 3. 

 Cyanura coroiiata var. macrolopha, Ridgw., Am. Jour, v, 1873, 43. 



d. diudematus. 



Cyanogamthis diadematus, Bp., Cousp. Av. i, 1850, 377. 

 Cyanocitia diadcmaia, SCL., Cat. Am. Buds, 18(52, 143. 

 Cyanura coroiiata var. diadcmata, Ridgw., Am. Jouru. v, 1873, 42. 

 Cyanura btellcri var. diademata, B. B. &, R., N. A. B. ii, 1874, 272. 



e. coronatus. 



GarritluH coronatus, Sw., Phil. Mag\ i, 1827, 437, No. 67.— .Jard. &. Selby, Illust. pi. 64. 



Pica coroiiata, Wa<;l., Isis, 1829, 750. 



CyanuruH coronatus, Sw., F. B. A. ii, 1831, 495.— Bd., B. N. A. 1858, 583.— SCL., P. Z. S. 



1859, 381.— ScL. & Salv., Ibis, 18.59, 22. 

 Cyanacorax coronatus, Bp., P. Z. S. 18:>7, 115.— CiiiAY, Gen. of B. 

 Cyanoyarrulus coronatus, Bi'. Cousp. i, 1850, 377. 

 Cyanooitta coroiiata, SxiticKL.— Cai!., Mus. Ileiu. 1851, 222.— ScL., P. Z. S. 1858. .302, 359 ; 



Cat. 1862, 142.— Tavlou, Ibis, 1860, 112. 

 Cyanura coronata var. coronata, R(D(iW.. Am. Jouru. v, 1873, 42. 

 Cyanura stelleri var. coronata, B. B. & R., N. A. B. ii, 1874, 272, pi. 39, fig. 4. 



Hab. — The typical form from flic Northern Pacific slopes, from Sitka southward. 

 Shading, in tiie Ca.'^i'ade, Coast Range, and Sitnra Nevada of Caliibrnia, into var. 

 frontalis. Xiir. macroloplius in the ccntial Rocky Mountain ri'gion of tiie I'nitcd States 

 (and eastward to Fort Lyons, in the Arkansas VaUey). Inosculating witli stclliri 

 l)ropt'r aliont th<' head-waters of the C;oliinibia ; sei)aratcd from it thence southward l)y 

 the Great Basin. Passing, on the Tahiti-lands of Mexico, into var. diadematus, and 

 this last passing southward into var. coronatus. 



List of specimens. 



Lieutenant Warren's Expedition. — 8856-7, Laramie. 



Later Lxpedilions. — ^iA'.VSt, 62243, Wyoming; 6043(), Laramie Peak ; 62241-2, Idaho. 



All the specimens collected arc of the var. macrolopha. 



The intergradatiou of tjie various sujiposed species of Cyanurus (|uote<l above, was 

 noted by Piol'. Baird in 18.")«, and snbseiinently by mysell ; but it remained for Mr. 

 Ridgway to point out exacwy tlie links in tiie connected cliaiu and detiue tiiem with 

 precision. 1 cannot do better than to (piote from his lucid exposition : " C. stelUri ex.- 



