458 



SUPPLEMENT. 



The rostrum is prominent and split, but uon-retractile ; the median tooth 



hooked and den- 

 tate; the first, or 

 first and second 

 laterals serrated, 

 the third claw- 

 shaped and sim- 

 ple. Loven places 

 this family next 

 to the Veluti- 

 nidce. 



(Section C. Scutibranchiata, Cuv. Ehipidoglossa, Troschel.) 

 Fam. 16. Turbinidce: lingual teeth 00. 5, 1, 5. 00 (pp. 28 and 142). 

 Fam. 17. HaliotidcB, p. 146. Fam. 18. YissurellidtB, p. 149. 



Fig. 2.34. Fissurella. (Wilton. 

 Farmophorus differs from Fissurella in having a broad median tooth. 



Fam. 19. Neritldie : teeth 00. 3, 1, 3. 00 (p. 140). 

 Nerita. Neritopsis. Neritiua. Naviceila. Pileolus. 



Fig. 255. Naviceila. (Wilton), 

 Median tooth small; laterals 3,— 1st large, trapeziform, 2, 3, minute; 

 uncini numerous, — 1st large, strong and opaque, the rest slender, translu- 

 cent, with denticulate hooks. 



{Cyclolranchiata. Cuv.) 



Fam. 20. Patellidce: ^.VbZ. Fam. 21. Bentaliadce: ^.Y^^. 



Fam, 22. Chitonidce. 



Patella. Nacella. Acmaea. Gadiuia, 



Fig. 257. Chitonellus. Tasmania. (Wilton.) 



