256 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



hh. Sides of head and nasal plumes not black, nor conspicuously (if 

 any) different from color of crown or throat. 



Aphelocoma (p. 323) 



gg. Conspicuously crested (crest pointed) Cy^anooitta (p. 345) 



f. Plumage without any blue (mostly grayish or brownish); longest 

 primaries exceeding secondaries by more than length of commissure. 



Peri3oretis (p. 364) 



Genus CORVUS Linnaeus. 



Corvus LiNNiEUS, Syst. Nat., ed. 10, i, 1758, 105. (Type, by elimination, C. corax 



Linnaeus. ) 

 Lycus (not of Fabricius, 1787) Boie, Isis, 1822, 55. (Type, Corvus monedula 



Linnaeus. ) 

 Monedula (not of Linnaeus, 1762, nor Coquebert, 1798) Brehm, Isis, 1828, 1273. 



(Type, Corvus monedula Linnaeus. ) 

 Corone Kaup, Naturl. Syst., 1829, 99. (Type, Corms corone Linnaeus.) 

 Coloeus Kaup, Naturl. Syst., 1829, 114 (Type, Corvus monedula Linnaeus.) 

 Colceus Sharpe, Cat. Birds Brit. Mus., iii, 1877, 25. 

 (?) Gazzola Bonaparte, Oonsp. Av., i, 1850, 75; Compt. Kend., xxxvii, 1854, 828. 



(Type, O. <!/ptca Bonaparte.") 

 Amblycorax Bonaparte, Compt. Eend., xxxvii, 1853, 829. (Type, Corvus viokuxus 



BONAPARTE.J 



Pterocorax Kaup, Joum. fiir Orn., ii, no. 12, Suppl. Nov., 1854, p. Iv. (Type, 



Corvus scapulatus Daudin. ) 

 Corax Kaup, Joum. fur Orn., ii, no. 12, Suppl. Nov., 1854, p. Iv. (Type, Corms 



corax Linnaeus?) 

 Anomaiocorax Fitzingek, Sitz. Ak. Wien, xliv, Abth. 1, 1863, 209. (Type, Corvus 



splendens Vieillot. ) 

 Trypanocorax Sundevall, Meth. Av. Tent., 1872, 43 (ex Bonaparte, Ann. Sci. 



Nat., i, 1854, 133=nomen nudum)^ (Type, Corvus frugileguslAmuBMS.) 

 (?) Heterocorax Sharpe, Cat. Birds Brit. Mus., iii, 1877, 11. (Type, Corvus capensis 



Lichtenstein.«) 

 (?) Rhinocorax Sharpe, Cat. Birds Brit. Mus., iii, 1877, 45. (Type, Corvus affinis 



Eiippell.a) 

 Mierocorax Sharpe, Oat. Birds Brit. Mus., iii, 1877, 48. (Type, Corvus jamaicensis 



Gmelin. ) 

 (?) Macrocorax Sharpe, Cat. Birds Brit. Mus., iii, 1877, 51. (Type, Corvus fuscica- 



pillus Gray.«) 



Large Corvinse, with the wing more (usually much more) than i)30 

 mm. long; nasal plumes covering at least the basal third of the 

 maxilla; wings long and pointed, reaching nearly or quite to tip of 

 tail, the eighth or seventh primary longest, the four outermost with 

 inner web sinuated; tail rounded or slightly graduated. 



Coloration (of American species). — Entirely dark colored, without 

 any white except, sometimes, on concealed basal portion of feathers of 

 the neck, etc. ; all the species except one ( C. jamaicensis) uniform black, 

 more or less glossy, or glossy steel-blue and violet (C. meodcanus). 



Nidification. — Nest of twigs, strips of bark, etc., lined with finer 

 materials, open above, placed in trees (more rarely on cliffs or build- 



o The type species of these supposed genera I have not been able to examine. 



