102 



GEOLOGICAL MEMOIRS. 



Cerithium vulgatum 

 Fasciolaria lignaria L. 



(tarentina Lamk. ) 

 Fuscus corneus L. 



(lignarius Lamk.) 

 Syracusanus 



Murex brandaris 

 trunculus 

 cristatus 

 Fdwardsii 



Triton (every species) 



Cassidaria 



Buccinum mutabile 

 corniculum 

 d'Orbignyi 

 pusio L. 

 neriteum 



Columbella rustica, &c. 



Of Land and Fresh-water Species. 



Helix aperta 



vermiculata 



candidissima 



globularis 



Helix strigata 



pyramidata 



conica 



conoidea 



Bulimus decollatus 

 Achatina folliculus 

 Paludina rubens, &c. 



3. Comparison of the Fauna of the Canary Islands with that of 



South Italy. 



In the work by "Webb and Berthelot on the Canary Islands 

 (concerning which it is only to be lamented that the book is too 

 luxurious and expensive for private persons to be able to purchase 

 it, and that thus a great part of its value in a scientific sense is lost), 

 we find only 196 species of Mollusca enumerated, of which the fol- 

 lowing occur in South Italy. 



Marine Bivalves. 



Saxicava arctica L. 

 Psammobia vespertina L. 

 Lucina lactea Poli. 



pecten Lam. 

 Donax trunculus L. 

 Venus verrucosa L. 

 Cardium tuberculatum L. 



edule L, 

 Cardita calyculata Brg. 



corbis Ph. 

 Area Noee L. 



imbricata Poli. 



Pectunculus pilosus L. 

 Modiola costulata Piss. 

 Chama grypboides L. 

 Pinna rudis L. 

 Avicula tarentina Lamk. 

 Lima inflata Lamk. 



squamosa Lam. 

 Pecten jacobams L. 



pusio Lam. 

 Spondylus Gaederopus L. 

 Ostrea cochlear Poli. 



Fresh-water Bivalves. 



None. 



Brachiopoda. 

 Terebratula truncata L. 



Hyalaea tridentata Lam. 

 gibbosa Rang. 

 trispinosa Lesuevr. 



Pteropoda. 



Cleodora cuspidata Q. et C. 

 acicula Rang, 



Naked Marine Gasteropoda. 



None. 



