LIST OF ORDERS, ETC. 281 



Page 



conchifera crassipeda - - 54 



conchifera lamellipeda - - 85 



conchifera tenuipeda - - -72 



Convolution - - - - 251 



Dentalidn ----- 140 



d i my aria - - - - 53 



DoRSALIDJE - - - - 29 



Gasteropoda - 139 



Heteropoda - 274 



Janthinid/E - - - - - 196 



LlMACIDiE ----- 159 



LlTHOPHAGIDiE - - - 77 



L,YMN;EIDyE - - - - - 181 



Macrostomidn - - - - 197 



Mactridn - - - - 73 



Maldanim: - - - - 31 



MaLLEIDyE - - - - - 114 



MELANIDiE - - - - - 186 



Mollusc a (Univalves) - - - 133 



MONOMYARIA - 106 



MONOTHALAMA - 269 



Myid>e - - - - 68 



MYTULIDiE - - - - - 109 



- 98 



- 192 



- 79 



Naiim: 

 Nerithxe 

 Nymphidn - 



