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, Ampv.llaria fasciata Eeeve. 

 Deinerara ; C, Calliostoma 2}iinctitlatv7)i, Mart., New Zealand; D, Cyclo2>hurus 

 atramentariiis Sowb., Saugliir; all x 15. 



mm L^ ^S 



Fio. 109. — Jaws of A, Chromodoris gracilis Iher., x 15 ; B, Scyllaea pelagica L., x 7; 

 C, Pleurohranchus plumula Mont., x 10 ; D, Pleurobranchaea Meckelii Lam., x f. 



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

 mentation (Fig. 109). 



