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Show 1895.] LORIUS ELAVOPALLIATUS AND PSITTACUS ERITHACUS. 317 the postzygapophysis, so bridging over and enclosing a foramen (/) visible, on either side, when the vertebra is viewed dorsally. In P. erithacus there is no such foramen, though there are two prolongations from the postaxial margin of the pleurapophysial lamella, the more ventral one on more posterior vertebrae (s) becoming the styliform pleurapophysial process. Fig. 7. Dorsal aspect of 3rd to 12th vertebrae of Lorius fiavopalliatus. ac. Arterial canal. d. Diapophysis. /. Foramen. hp. Hyperapophysis. iz. Interzygapophysial ridge. m. Metapophysis. n. Neural spine. ptz. Postzygapophysis. pz. Prezygapophysis. |