74 PROCEEDINGS OF SOCIETIES. 



f!76 Turtonia minuta, O. Fabricius. v. 2. p, 81. 

 fl77 Kellia suborbicularis, Montagu, v. 2. p. 87. 

 fl78 Kellia nitida, Turton. v. 2. p. 92. 

 f!79 Kellia (Poromia) rubra, Montagu, v. 2. p. 94. 

 f!80 Lepton squamosum, Montagu, v. 2. p. 98. 

 |181 Lepton convexum, Alder, v. 2. p. 102. 

 f!82 Galeomma Turtoni, Sowerby. v. 2. p. 105.* 



XVII. CYCLADID^E. 



183 Cyclas rivicola, Leach, v. 2. p. 111. 

 fl84 Cyclas cornea, Linneus. v. 2. p. 113. 

 f!85 Cyclas caliculata, Draparnaud. v. 2. p. 115. 

 J186 Pisidium obtusale, Pfeiffer. (?) v. 2. p. 118. 

 f!87 Pisidium pusillum, Turton. v. 2. p. 120. 

 J188 Pisidium cinereum, Alder, v. 2. p. 123. 

 fl89 Pisidium nitidum Jenyns. v. 2. p. 125. 

 fl90 Pisidium pulchellum, Jneyns. v. 2. p. 126. 

 f!91 Pisidium Henslowianum, Sheppard. v. 2. p. 12&. 

 fl92 Pisidium amnicum, Muller. v. 2. p. 131. 



XVIII. 



193 Unio tumidus, Retzius. v. 2. p. 133. 



194 Unio pictorum, Linneus. v. 2. p. 140. 

 f!95 Unio margatiferus, Linneus. v. 2. p. 142. 

 f!96 Anodonta cygnea, Linneus. v. 2. p. 146. 



XIX. MYTILID^E. 



197 Dreissena polymorpha, Pallas, v. 2. p. 155. 



f!98 Mytilus edulis, Linneus. v. 2. p. 170. 



fl99 Modiola modiolus, Linneus. v. 2. p. 182. 



200 Modiola pbaseolina, Philippi. v. 2. p. 186. 



f201 Modiola tulipa, Lamarck, v. 2. p. 187. 



j-202 Modiola barbata, Linneus. v. 2. p. 190. 



J203 Crenella discors, Linneus. v. 2. p. 195. 



j-204 Crenella mannorata, Forbes, v. 2. p. 198. 



J205 Crenella nigra, Gray. v. 2. p. 202. 



206 Crenella costulata, Risso. v. 2. p. 205. 



207 Crenella rhombea, Berkeley, v. 2. p. 208. 

 |208 Crenella decussata, Montagu, v. 2. p. 210. 



XX. ARCADJE. 



|209 Nucula nucleus, Linneus. v. 2. p. 215. 

 J210 Nucula nitida, Sowerby. v. 2. p. 218. 

 J211 Nucula radiata, Hanley. v. 2. p. 220. 

 j-212 Nucula decussata, Sowerby. v. 2. p. 221. 

 |213 Nucula tenuis, Montagu, v. 2. p 223. 

 f214 Leda caudata, Donovan, v. 2. p. 226. 

 215 Leda pygmaea, Munster. v. 2. p. 230. 

 f216 Area tetragona, Poli. v. 2. p. 234. 

 j-217 Area lactea, Linneus. v. 2. p. 238. 

 |218 Area raridentata, Searles Wood. v. 2. p. 241. 

 f219 Pectunculus glycimeris, Linneus. v. 2. p. 245. 



XXI. AVICULACE^). 



f220 Avicula Tarentina, Lamarck, v. 2. p. 257. 

 j-221 Pinna pectinata, Linneus. v. 2. p. 255. 



* This mollusc is marked aa Irish on the authority of a single valve marked " Ireland," in the col- 

 lection of Mr. Humphreys. 



