12 

 Sub-Order Abranchia. 



141. Lepetidae = Lepetidae, Dall, A. J. C. 1869, 



140. 



Order YIL— POLYPLACOPHORA. 



142. Chitonidae < Cliitonidae, Gray, 177. 



143. Chitonellidae < Chitonidae, Gray, 177. 



Sub-Class Pulmonifera. 



Order YIII.— PULMONATA. 



Sub-Order Geophila. 



( Oculiferous tentacles invertihle.) 



{Agnatlia.) 



144. Oleacinidae < Testacellea, Alb. Mart. 22. 



145. Streptaxidae = Streptaxidae, Gray, A.M.N. H. 



YI, 1860, 268. 



146. Testacellidae < Testacellea, Alb. Mart. 22. 



[Goniognatha.) 



147. Ortlialicidae = Orthalicea, Alb. Mart. 209. 



[Holognatha.) 



148. Cylindrellidae = Cylindrellidae, Cr. & F., J. C 



1870, 5. 



149. Pupidae < Piipacea, Alb. Mart. 228. 



