30 CORVID^E. 



fig'. 2 ; Schl. Bijdr. Dicrk. Amsterd. folio, art. Conns, p. 14, pi. 1, 

 fig. 27 ; Gray^ Haml-I. B. ii. p. 297 ; Allen, Bull. Han: Coll. ii. 

 p. 297 ; Coucs, Key N. Amti: B. p. 163 ; Scl. S,- >Sah\ Komencl. 

 Av. Neotr. p. 40 ; Baird, Brewer, »^- Ridgio. N. Amer. B. ii. p. 251, 

 pi. 37. fig. / ; Cones, B. Korth-west, p. 207, note. 



Adult. General colour glossy blue-black, rather inclining to violet 

 on the back and wings ; head and neck slightly shaded with greenish, 

 clearer on the ear-coverts ; wings and tail bronzy black, somewhat 

 shaded with steel-blue on the outer webs, and with green on the 

 inner ones ; under surface of body glossy steel-black, with a decided 

 greenish cast on the breast, flanks, and abdomen ; bill and legs 

 black. Total length 15 inches, culmen l-G, wing 10-3, tail 6-1, 

 tarsus 1'85. 



Hab. Nortli America : Atlantic coast of the United States. 



«. Ad. St. North America. H.RH. Duke of Sussex [P.]. 



h. Ad. st. North America. 



6. CORONE. 



Type. 



Corone, Kaup, Natiirl. Syst. p. 99 (1829) C. corone. 



AniblTCorax, Bii. C. E. xxxvii. p. 829 (1853) C. violaceus. 



Anomalocorax, Fttz. Sitz. Akad. Wien, xlvi. Abth. 1, 



p. 209 (1863) C. splendens. 



Eangc. The whole of the Old World, excepting Africa south of 

 the desert and Oceania : North America and Mexico. 



Key to the Sijecies. 



a. Plumage with some shade of green in it, 

 generally more distinct on the outer edge of 

 the wing, and on the primaries and outer 

 tail-feathers. 

 a,'. Back of neck distinctly of a different colour 

 from the rest of the upper surface, being 

 white or grey or drab-brown, and forming 

 a collar. 

 a". Back grey or white from the nape to , ^^^.^■^, ^ 3^ 

 the tail, asalso the entire under surface j ^„^,,;;;„^' ^ og. 



V. Back black, the hinder part of the neck . w,„,7^,o p. 33. 

 drab-brown or gTey ^ j ^^^^^^^ >^^.^^ 



h'. Back of neck uniform with the rest of the 

 upper surface, sometimes (in C. macro- 

 rhytwhus and allies) with a slight shade of 

 grey under certain lights, 

 c''. Base of feathers of mantle greyish or 

 greyish white. 

 a'". Throat-feathers blended, not lanceo- 

 late. I • o < 

 1 rr 1 i.1 vii americatia, p. 34. 

 a\ Tarsus longer than bill \jlornlana,-p^. 35. 



,. rn 1 i ii i^-ii \caurmo, p. 36. 



6*. J arsus shorter than bill { ■ ' ' „q 



,,,, m, i r ii, 1 ^ A. \mextcana,\>. 60. 



h . 1 hroat-feathers lanceolate. ' '^ 



