190 



SYSTEMATIC ARRANGEMENT 



fifth very large, broad, with a large subcentral reflexed lobe ; the 

 lateral teeth are very numerous, subequal, similar, compressed, trans- 

 parent, with a recurved tip, those of the inner teeth of the series 

 being bifid. 



The following Figures were accidentally omitted in their right places. 

 Fig. 101. — Lingual teeth of Emarginula crassa (p. 163). 



Fig. 102. 

 Teeth of Tectura testudinalis (p. 1G9). 



Fig. 103. 

 Teeth of Lepeta cceca* (p. 172). 



Fig. 104.— Teeth of Patella vulgata (p. 174). 



* The figure 92 tinder this name at p, 172 should he lothiti fiilra, ami referred 

 to in the description of that gmus. 



