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 aust?xilis I^am., Sydney; B, Ampullaria fasciata Reeve, 

 Demerara ; C, Calliostoma pnnctidatuui Mart., New Zealand; D, Cyclophorus 

 atixunentariaa Sowb., Sanghir; all x 15. 



A 



Fig. 109. — Jaws of A, ChromodoHs gracilis Iher., x 15; B, Scylltea pelagica L., x 7; 

 C, Plevrohranchus plumula Mont., x 10; D, Plew^obranchaea Meckelii Ijani., x |. 



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

 mentation (Fig. 109). 



