156 TREEONIDa: VINAGO 



d. Tarsus shorter than the middle toe (without 

 claw). 

 «'. No metallic sheen on the hind neck, sexes 



alike Cohimha, p. 160. 



6'. Metalhc sheen on the hind neck ; sexes 



dissimilar Turtm-acna, p. 164. 



6. Tarsus equal to or longer than the middle toe 

 without claw. 

 a}. No metallic sheen on the back ; no metallic 



spots on the wings Turtur, p. 166. 



6'. Metallic spots on the wings and scapulars. 

 a-. Tail long and much graduated, the outer 



feathers less than half the middle ones... CEna, p. 174. 

 b-. Tail normal, shorter than the wing and 

 slightly rounded. 



o'. First primary attenuated at the tip Tympa.nistria,p.m . 



V. First primary normal ChalcopeUa, p. 180. 



c\ No metallic spots, but the hind neck and 



breast suffused with a metallic sheen HaplopeUa, p. 182. 



Family I. TRERONID^. 



Usually fourteen tail feathers ; general plumage green ; no 

 ambiens muscle, oil gland or caeca. 



Genus I. YINAGO. 



Type. 

 Yinago, Cuvier, Eigne Anim. i, p. 457 (1817) V. waalia. 



Bill somewhat stout and slightly hooked, soft basal portion 

 occupying about half its length ; wings pointed, the first and third 

 primaries only slightly falling short of the second, which is the 

 longest ; the third quill distinctly scooped out on the inner web ; 

 tail of fourteen even feathers ; tarsus shorter than the middle toe 

 and claw, feathered almost to the toe joints with yellow plumes ; 

 soles of all the toes broad and widened out below ; plumage chiefly 

 green. 



This, the only African genus of Green Pigeons, contains some 

 eight species all confined to that Continent ; two, showing but 

 superficial points of difference, are found in South Africa. 



