212 JAWS IN PROSOBRANCHIATA AND OPISTHOBRANCHIATA ch. 



Many of these are sculptured with the most elaborate patterns, 

 and appear to be furnished with raised teeth, like a file. In the 



Fig. 108. — Jaws of A, Triton australis Lam., Sydney ; B, Ampullaria fasciata Reeve, 

 Demerara ; C, CalHostcyma punctulatimi Mart., New Zealand; D, Cyclophorus 

 atrameiitarius Sowb., Sanghir; all x 15. 



Fig. 109. —Jaws of A, Chromorloris qrarilis Iher., x 15; B, Scyllica polaf/ica L., x 7; 

 C, Plcnrohranchus plumula Mont., x 10; D, Pleurobranchaea Meckclii Lam., x §. 



Nudibranchiata the jaws are of great size" and beauty of orna- 

 mentation (Fig. 109). 





