240 THE ANATOMY OF THE COLUMBZ. 
Suborder COLUMBAi.  Schizorhinal birds with a characteristic 
pterylosis, humerus-head, and sternum; with the fourth gluteal 
muscle, which in other schizorhinal birds covers the femur-head, 
undeveloped; with the oil-gland nude, when present, and with 
the gall-bladder generally absent. 
Family Conumstp#. Columbe in which the intestinal c#ca never 
exceed half an inch in length. 
Subfamily Cotumpinz. Columbide possessing the ambiens 
muscle, intestinal ceca, an oil-gland, no gall-bladder, and 
12 rectrices. 
Genus Columba. 
» | Lurtur. 
»  Macropygia. 
»  LHetopristes. 
Subfamily Puarinaz. Columbide possessing the ambiens muscle 
and no intestinal ceca. 
Page 259. Division «. The oil-gland present, no gall-bladder. 
Genus Chamepelia. 
»,  Metriopelia. 
»  Zenaida. 
»  Zenaidura. 
»  Calenas. 
»  Chalcopelia. 
»  Lympanistria. 
»»  Ocyphaps. 
»  Leucosarcia. 
»  Phaps. a 
American. 
~ 
> Old-W orld. 
Division @. The oil-gland and gall-bladder present. 
Genus Oarpophaga. 
‘Division y. The accessory femoro-caudal muscle absent (it 
being present in all other Columbe); the oil-gland and 
gall-bladder present. 
Genus Lopholemus: 
Division 6. The oil-gland and gall-bladder absent. 
Genus Didunculus. 
Subfamily Treronivz. Columbide wanting the ambiens muscle. 
Division « With intestinal ceeca and an oil-gland; no gall- 
bladder. 
Genus Phlogenas. 
