Genus DENDROTRERON. 
The Genus Dendrotreron contains two species of Pigeon, which 
both Sharpe and Salvadori include in the genus Columba: but it forms, 
as a matter of fact, a sort of connecting link between the Wood-Pigeons 
of the genera Palumbus and Alsocomus, and the Rock-Pigeons of the 
genus Columba, and is really quite as close, both in structure and habits, 
to Palumbus as it is to the last-mentioned. I therefore, in agreement 
with Blanford, retain the genus as a convenient one. 
In type of coloration, Dendrotreron is sui generis; for although 
it has not the barred wings of the Rock-Pigeons, neither has it the 
barred tail of the Wood-Pigeons. In length also this member is 
intermediate between the short tail of the former and the longer tail 
of the latter birds. So also the feet and legs are intermediate between 
the two, the feet being broader and more suited to its arboreal habits, 
whilst the tarsi are partially feathered. 
Our Indian bird, Dendrotreron hodgsoni, is curiously like an African 
form, Dendrotreron arquatrix, which differs principally in having a purple 
fore-head, but which is in the rest of its coloration very close indeed 
to hodgsoni. 
