COLUMB^ 313 



G-AEROD included with the Columbae Pterocles, which I 

 treat of separately. Accordingly, in quoting his classification 

 of the group,' I term families what he termed subfamilies. 

 For him the group contained two families, viz. Columbidse 

 and Pteroclidae. The following is, with the alterations 

 referred to, GtAerod's scheme of division of the group : — 



Family I. Coliunbidae. Columbse with ambiens, caeca, oil 

 gland, no gall bladder, and 12 rectrices. 



Genera : Golumba, Turtur, Macropygia, Ectopistes, 

 Leptoptila, lanthcenas. 



Family II. Phapidse. Columbse with ambiens and no 

 caeca. 

 Division A. Oil gland present, no gall bladder. 

 Genera : Chammpelia. 

 Metriopelia. 

 Zenaida, Zenaidura. 

 Geotrygon. 

 Peristera. 

 Caloenas. 

 Chalcopelia. 

 Tympanistria. 

 Ocyphaps. 

 Leucosarcia. 

 Phaps. 

 Division B. The oil gland and gall bladder present. 



Genus Carpophaga. 

 Division C. The accessory femoro-caudal absent ; oil 

 gland and gall bladder present. 

 Genus LopholcBmus. 

 Division D. Oil gland and gall bladder absent. 

 Genus Didunculus. 



Family III. Treronidse. Columbae without ambiens. 

 Division A. With caeca and oil gland ; no gall bladder. 

 Genus Phlogoenas. 



' ' On some Points in the Anatomy of the Columbse,' P. Z. S. 1874, p. 249, 

 and ' Notes on Two Pigeons,' &c., ibid. 1875, p. 367. 



