| OCR Text |
Show 1895.] LOEIUS FLAVOPALLIATUS A N D PSITTACUS EBITHACUS. 325 articular surfaces are slightly further apart. The centrum is more laterally compressed and more vertically and also antero-posteriorly extended, the hypapophysis is longer and trifid at its extremity, the two catapophyses having descended nearly to its apex. Fig. 13. ptz Dorsal aspect of 13th to 19th vertebrae of Psittacus erithacus. d. Diapophysis. hp. Hyperapophysis. n. Neural spine. ptz. Postzygapophysis, pz. Prezygapophysis. In L. fiavopalliatus the conditions are similar save that the hypapophysis is simple, and that the centrum is not so m u c h more vertically and antero-posteriorly extended than is the last cervical vertebra. In both species the centrum is extremely narrow transversely. The hinder articular surface of the centrum is concave, but its anterior ventral surface is slightly saddle-shaped in both species. The second dorscd vertebra is very like the first, but the hypapophysis, in P. erithacus, ends distally in a hook-shaped pointed process which curves forwards beneath the hinder part of the body of the preceding vertebra. In L. fiavopalliatus the conditions are generally similar. The central articular surfaces are convex anteriorly and concave posteriorly. The third dorsal vertebra is very like the second, but the post- |
