AND OTHEE EXTINCT BIEDS OP MAUEITIUS. 299 



the sea has ever had access to the lake, from which it is separated by a ridge of some 

 height, while it is known to be the habit of those creatures to convey animal remains 

 a long distance inland from the shore. Nevertheless it may be as well to name the 

 shells as determined by Mr. A. H. Cooke, Honorary Curator of Conchology in the 

 Cambridge Museum. They are as follows : — Land Mollusca, Gihbulina sulcata, Lam., 

 Pachystyla inversicolor, Fer., Cyclostoma carinatum. Lam. : Marine Mollusca, 

 Cyprma caput-serpentis, L., Nerita polita, L., Turbo sp. incert. (fragment). In addition 

 to the foregoing the seeds of several plants have also been found, but these appear not 

 to need enumeration ; nor do the specimens of the soil collected by Mr. Sauzier (though 

 all are carefully preserved in the Museum) seem to call for any particular remark on 

 the present occasion. 



EXPLANATION OF THE PLATES. 

 PLATE XXXIII. 



Figs. 1-8. Lophopsittacus mauritianus (p. 283). 



Fig. 1. Left tibia, front view. I, attachments of the transverse ligament across the 



long extensor tendons. 

 Fig. 2. Eight femur, posterior view. 

 Fig. 3. Left metatarsus, plantar surface. 

 Fig. 4. Left metatarsus, dorsal surface, g, groove for the tendon of the muse, extensor 



digitorum ; ^, insertion of the tendon of the m. tibialis anticus. 

 Fig. 5. Dorsal view of the underjaw. p, posterior angle ; /, facet for the quadrate ; 



fi, additional facet for the jugal process of the quadrate. 

 Fig. 6. Lateral view of the right jaw. 

 Fig. 7. Ventral view of sternum. Sp.e., spina externa sterni ; p.l.a., anterior lateral 



process ; S, lateral line of m. subclavius. 

 Fig. 8. Eight lateral view of sternum. Sp.i., spina externa sterni ; S, median line of 



m. subclavius. 



Figs. 9 and 10. Astur alphonsi (p. 285). 



Fig. 9. Left tibia, front view. /, rest of fibula; 5, bony bridge over the tendon of the 



m. extensor digitorum ; p, peroneal crest. 

 Fig. 10. Left metacarpals, lateral view, p, articular facet of the pollex ; m^, meta- 



carpale III. 



Figs. 11-18. Strix sauzieri (p. 286). 



Figs. 11, 12. Inner and outer views of humerus. /, pneumatic foramen. 



Fig. 13. Left tibia, front view, p, peroneal crest ; f, distal portion of fibula ; /, attach- 



ment of transverse ligament. 



2x2 



