272 Capt. G. E. Shelley o}i the 



b^. Tail more than two thirds of wing. Distance 

 between the tip of the secondaries and tip of 

 wing less than half the length of tail. Do not 

 breeei in holes. Tarsus naked or featliered on 

 the front towards the knee-joint. Fourth 

 primary not always shorter than one or more of 

 the outer three. 

 P. With no metallic spots on the wings ; under 

 surface of the wings not rufous. 

 6'. With no pale terminal bar to the tail under- 

 neath. Larger. 

 b*. Fourth primary longest ; tarsus entirely 



naked 2. Trocaza. 



c*. Fourth primary shorter than the outer 

 three ; upper portion of the tarsus fea- 

 thered in front 3. Palumbua. 



tf'. With a white or pale terminal bar to the tail 



underneath. Smaller. 



c*. With no trace of black on the neck. Back 



of the neck and front of the mantle 



glossed with metallic shades. 



c*. Fom-th primary shorter than the outer 



three ; tarsus shorter than the hind 



toe with claw ; upper portion of the 



tarsus occasionally feathered. Sexes 



sometimes dii^similar 4. Ttirturcena. 



(P. Fourth primary longer than the first ; 

 tarsus longer than the hind toe with 

 claw, and always entirely naked. Sexes 



always similar in plumage 5, Ilajilopelia. 



d*. With a more or less defined partial black 

 collar on the neck ; with no metallic 

 shades on any portion of the plumage . . 6. Turtur. 

 c*. With large metallic spots on the wings ; under 

 surface of the wings rufous. 



c^. First primary entire 7. Chalcopelia. 



(P. First primiary sulcated 8. Tijmpanistria. 



h. Tail longer than the wing. 



V. First primary entire. Sexes very dissimilar in 



plumage 9. CEna. 



c^. First primary sulcated. Sexes similar in plumage 10. Geopelia. 



The ten divisions to which I give generic value in the present 

 subfamily are in their nature somewhat unsatisfactory, being, 

 to a great extent^ founded upon the arrangement of tlie colours ; 



