160 



Proceedings of the Royal Irish Academy. 



Hyalinia helnii. 79. 



helvetica, 68, 78, 128. 



}iiberaica, 68, 69, 78, 79, 128. 



lucida, 71, 77, 128, 132. 



nitens, 79, 133. 



nitida, 80. 



nititula, 79, SO, 133. 



petvonella, 80, 128, 133. 



pura, 79, 80, 135. 



radiatula, 79, 80, 101, 135. 



scharffi, 68, 78, 79, 99. 



subterranea, 77. 

 Hydrobia jentinsi, 118. 



ulvae, 119. 



ventiosa, 118. 

 Hygiomia fiisca, 88, 91, 102, 112. 



granulata, 66, 88, 128. 



hispida, 85, 89, 128. 



plebeia, 89. 



revelata, 69. 



rufcscer.9, 90, 134. 



sericea, 128. 



sp., 135. 



Limax agreslis, 74. 



arbomm, 72, 73, 74, 102. 



cinereo-iiiger, 72. 



flavus, 73. 



luai'ginatus, 73, 74. 



niaximus, 72. 



tenelliis, 69. 

 Limnaea acuta, 109, HI. 



aiiriculaiia, 108, 111, 114. 



boissyi, 109. 



burnetii, 69. 



glabra, 66, 112, 129. 



involuta, 66, 110, 111, 120 



lacustiis, 109. 



ovata, 109. 



palustris, 101, 111, 113. 



pereger, 109, 110^ 111. 



peregra, 109. 



praetenuis, 68, 110, 126. 



sp., 134. 



stagnalis, 108, 111, 113. 



truncatula, 101, 102, 112, 134. 

 Limneus (see Limnaea) . 



Margaritana margaritifera, 122. 

 pyrenaica, 122. 



Melampus bidentatus, 107. 

 Milax gagates, 7S. 



marginatus, 75 



sowerbyi, 74, 75. 

 Mya margaritifera, 122. 

 Mytihis cygneus, 122. 



Nerita fluviatilis, 121. 



Neritina fluviatilis, 120, 121, 122, 130. 



Opeas goodalli, 134. 

 Otina Otis, 107. 

 Ovatella bideiitata, 107. 



Piiliidestiina confiisa, 68, 118. 



jenldnsi, 6S, 118, 119. 



stagnalis, 119. 



tayloii, 69. 



ventrosa, 118, 130. 

 Paludina tentaculata, 120. 



vivipara, 66, 130. 

 Patella lacustris, 108. 



oblonga, 108. 

 Patulastra flavida, 133. 

 Physa acuta, 134. 



fontinalis, 117. 



hypnorum, 117. 



gabbi, 134. 



gyrina, 135. 



sp., 134, 136. 

 Phytia denticulata, 107. 



myosotis, 107. 

 Pisidium aninicuni, 70, 124, 130. 



casertanum, 70, 112, 185, 127, 130. 



cinereum, 125. 



fontinale, 124. 



globulare, 66, 126, 127. 



henslowanum, 70, 124, 130. 



hibemicum, 66, 68, 110, 126. 



lilljeborgi, 68, 127. 



milium, 70, 126. 



nitidtim, 125, 131. 



obtusale, 125, 126, 130. 



personatum, 68, 70, 112, 125, 126, 131. 



pulchellum, 124, 125, 130. 



pusillum, 66, 70, 125, 127, 131. 



steenbuchi, 66, 68, 126, 127, 131. 



subtruncatum, 70, 124, 130. 

 Planorbis albus, 113. 



