CURVID.E — THE CKOWS. 



233 



Tliis jfonus is S(» similar to Nvi\fr<njn as to be hardly sepanibk' ; the 

 principal dilluruiicu being in tlie yk'ucler and more decnrvcd and uttLiiuuted 



Pirieorvus rohnnhinnus. 



bill, with a sli^ditly concave, instead of c(»nvex, cnlmen, and ])lain instead 

 of spotted plumage. Tiie dillurenees of form are expressed by the accom- 



96T3 



Nurifraga rnryomtnrUs. 



panying outlines of the generic features of the two. But one species is 

 known, this being ]ieculiar to Western North America. 



Picicorvus columbianus, Lonap 



CLABKFB CBOW. 



Corrus cohimhianus, "Wrrsox, Am. Orn. IIj, 1811, 29, i»l. xx. — Bon. Ohs. "Wilson, 1S24, 

 No. 38. — In. Syn. 1S28, 57. — Ntttali, I, 1832, 21S. Xiicifnuja cnhtmhunm, Ari>. 

 Orn. Uiojr. IV, 1888, 4r)0, \s\. nvlxii. — Ir. Syi). 1839, l.^>r,. — Ib. Hinls Am. IV, 1842, 

 127, i»l. ccxxxv. — Box. List, 1838. - XrrrAiJ., Man. I, (2(1. o<l.,) 2r)l. Picicornis co- 

 lH7nhunn(s, PxtNAi'. Consp. 18.')0, 3t :. — X':wi5Kki:y, V. K. \l. Kcp. VI, iv, 1^37, S3. 

 — rUiiM), IJinls N. Am. 18r.S, 573. — Loud, Pr. K. A. Inst, iv, 121 (British (\)lum- 

 l.ia). —Dw.Lk BANNrsTKR, Tr. ('hii'. Ac. I, 18G9, 286. — Coopku, Orn. CaL 1, 1S70, 

 289. " Corviis mcgonyXf \y \GLEii.'' \ 



