Columbidse of the Ethiopian Region. 259 



2. Subfamily Columbinsej with 12 tail-feathers, contains 

 Colnmba,Palumbus, Turtur, Turturcena,Haplopelia, Chal- 

 copelia, Tympanistria, CEna, and Geopelia. The latter 

 genus only comes within my range as an introduced bird 

 on some of the islands bordering Africa to the south 

 of the equator. 

 In all the members of this family the sexes are simiilar in 



plumage, with the exception of Turturcena delegorguei and 



(Ena capensis. 



Subfam. I. Treronin^. 

 Tail of 14 feathers ; tarsus more or less feathered. 



a. Entire tarsus feathered all rouucl ; feathers of the neck 



lengthened, and of a loose, rather hair-like texture ; 

 body and wings indigo-blue ; the inner web of the 

 first primary more or less indentated ; the third 

 primary entire 1. Alectroanas. 



b. TarsTis only feathered in front for about half its length ; 



feathers of the neck ordinary ; general colouring 

 olive ; the first primary entire, the third gene- 

 rally indentated on the inner web (but this is not a 

 very reliable character, for in T. delalandii I met 

 with it in eight specimens, while in two others the 

 third primary was entire) 2. Treron. 



1. Alectrcenas. 



Alectrmna^, Gray, List Gen. B. 1840, Type. 



p. 58 A. nitidissima. 



Chlamydcena, Bp. Compt. Rend, xxxix. 



1854, p. 879 A. nitidissima. 



Furningus, Des Murs, Enc. d. H. N. 



vii. Ois. p. 32 (1854) . . . . A. madagascariensis. 

 Funingus, Bp. (correction) Compt. 



Rend, xxxix. 1854, p. 880 . . A. madagascariensis. 



Enjthroena, Bp. I. c A. pulcherrima, 



^/ec/or«;/ia5,Agassiz, 1855 (correction) A. nitidissima. 



The little group of Pigeons which I assemble under this 

 genus is confined to Madagascar and the neighbouring 

 islands of the Indian Ocean, and were once probably five in 

 number; of these two are now extinct. Colmnba rodericana, 



