INDEX. 



253 



Pecten (continued). 



septemradiatus, 166. 



similis, 168. 



squama, Scacchi, 168. 



striatus, 168, 169. 



sulcatus, 167. 

 Testa, 167. 



tigrinus, 167. 



varius, 166. 



vitreus, Chemnitz, 168. 

 Pectunculus g lycymeris, 175. 



minutus, Philippi, 175. 



pygmceus, Philippi, 175. 

 Pedipes, Adanson, 105. 

 PELLIBEANCHIATA, 28. 

 PeUa, Quatrefages, 16. 

 Pelta or Limapontia?, sp., A. & H., 15. 

 Peplidia, 22. 

 Peracle, Forbes, 115. 

 Peronia, ~De Blainville, 95. 

 Phasianella intermedia, Philippi,204. 



pulla, 204. 



tennis, Michaud, 204. 

 Pherusa, Jeffreys, 210. 

 Philine,223. 



catena, 224. 



granulosa, Sars, 224. 



pruinosa, 224. 



punctata, 224. 



quadrata, 224. 



scabra, 224. 



Phlebenterata, Quatrefages, 28. 

 Pholadidea papyracea, 193. 

 Pholas callosa, Lamarck, 193. 



Candida, 193. 



crispata, 193. 



dactylus, 193. 



parva, 193. 



vibonensis, Philippi, 193. 

 Phyllidida, Forbes &Hanley, 17. 

 P%s<z, 115, 159. 



fontinalis, 152. 



hypnorum, 152. 

 Phytia, Gray, 104. 

 Piliscus commodus, 201. 

 Pinna, 170. 



pectinata, L., 171. 



rw^s, L., 170. 

 Pisidium amnicum, 150. 



fontinale, 150. 



nitidum, 150. 



pusillum, 150. 



Planaria limacina, Fabricius, 29. 

 Planorbis albiis,v 



Planorbis (continued). 



arcticus, Moller, 152. 



carinatus, 152. 



complanatus, 152. 



Crosseanus, Bourguignat, 152. 



gelatinus, Miiller, 152. 



^{aier, 152. 



hirsutus, Gould, 152. 



hispidus, Schroter & Draparnaud, 

 152. 



imbricatus, Miiller, 152. 



lineatus, 152. 



nautileus, 152. 



nitidus, 152. 



riparius, Westerlund, 152. 



sibiricus, Dunker, 152. 

 Pleurobranchia, Gray, 10. 

 PLEUROBRANCHID^E, F. & H., 9. 

 PLEUROBRANCHUS, Cuvier, 9. 



aurantiacus, Eisso, 14. 



calyptr&oides, Forbes, 14. 



elongatus, Cantraine, 14. 



Forskalii, Delle Chiaje, 11. 



limacoides, Forbes, 14. 



mammillatus, Schultz, 11. 



membranaceus, Montagu, i o. 



perforates, Philippi, 14. 



Peronii, 9. 



plumula, Montagu, u, 13, 14. 



scutatus, Forbes, 14. 



sordidus, Forbes, 14. 



stellatus, Eisso, 14. 



testudinarius, Cantraine, 11. 



tuberculatus, Delle Chiaje, 11. 

 PleurophyllidcB, Bergh, 17. 

 PLEUROPHYLLIDIA, Meckel, 17. 



Loveni, Bergh, 17. 

 PLEUROPHYLUDIID^;, H. & A. Adams, 



16. 



Pleuropus, Eschscholtz, 118. 

 Pleurotoma acuta, Bellardi, 222. 



attenuata, 220. 



brachystoma, 229. 



C., Costa, 220. 



carinata, Bivona, 220, 221. 



cornea, De Blainville, 220. 



costata, 220. 



galerita,22l. 



galeritum, Philippi, 221. 



hystrix, Bellardi, 220. 



lavigata, 220. 



LavicB, Maravigna, 220. 



nebula, var. elongata, 220. 



nivalis, 220, 222. 



