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Show 1874.] ANATOMY OF THE COLUMBA. 259 Division a. The oil-gland present, no gall-bladder. Genus Chamapelia. Metriopelia Zenaida Zenaidura „ Caloenas. ,, Chalcopelia. >» >> . I American. >> Tympanistria. v,o l d_W o r l ( L ,, Ocyphaps. ' „ Leucosarcia. „ Phaps. Division jS. The oil-gland and gall-bladder present. Genus Carpophaga. Division y. The accessory femoro-caudal muscle absent (it being present in all other Columbae) ; the oil-gland and gall-bladder present. Genus Lopholamus. Division o\ The oil-gland and gall-bladder absent. Genus Didunculus. Subfamily TRERONIN^E. Columbidae wanting the ambiens muscle. Division a. With intestinal caeca and an oil-gland; no gallbladder. Genus Phlogoenas. Division fi. With intestinal caeca, no gall-bladder, and no oil-gland. Genus Starncenas. Division y. With an oil-gland, no gall-bladder, and no intestinal caeca. Genus Geopelia. Division 8. With no intestinal ceeca, no oil-gland (or a very small one), and scutellated tarsi. Genus Treron. „ Ptilonopus. Division e. With no intestinal caeca, no oil-gland, no gallbladder, and tarsi reticulate. Genus Goura. Family PTEROCLIDEE. Columbae in which the intestinal caeca considerably exceed half an inch in length. Subfamily P T E R O C L I N J E . Pteroclidee possessing the ambiens muscle, a gall-bladder, and an oil-gland. Genus Pterocles. „ Syrrhaptes. |