1895.J LORTTJS FLATOPAILIATFS AND PSITTACTTS EEITHACUS. 329 



The second lumbosacral vertebra is indistinguishable save for its 

 parapophysial transverse process (pt) and thereto anchylosed long 

 ribs, between which and the transverse process of the preceding 

 vertebra a fossa appears. Thus, -when the ventral surface of the 

 sacrum is looked at, a fossa appears on either side between the two 

 transverse processes of the preceding and those of the present 

 vertebra. 



The third lumbosacral vertebra in Lonus flavopalliatus bears no 

 rib but only a short parapophysial transverse process on either side 

 {pt), which anchyloses distally with the ilium and is slightly more 

 antero-posteriorly extended than that of the preceding vertebra. 

 Between these two transverse processes and those of the second 

 lumbo-sacral vertebra a fossa is to be seen (on the ventral aspect 

 of the sacrum) on either side, of about the same size as those 

 between the transverse processes of the first and second lumbo- 

 sacral vertebrae. The transverse diameter of the centrum is 

 slightly wider than that of the preceding vertebra. 



The fourth lumbosacral vertebra is quite similar to the preceding 

 one in L, Jiavopalliatu^, but in P. erithacus its transverse process 



Fig. 18. 



:/ 



cn 



Ventral aspect of sacrum oi Lorius flavopalliatus. 



cn. Fused sacral vertebrae. 

 il. Ilium. 

 If. Lateral fossa. 



Is. nio-caiidal spine. 

 pt. Parapophysial process, 

 fu. Pubis, 



