54 Twenty-fifth Report on the State Museum, 



Astarte semisulcata?=arctica'y(^r. Leach. Iceland. 



Astarte triangularis Mont Gibralter (McAnd.). 



Astarte triangularis var. minutissima. . . British. 



Astarte elliptica Greenland. 



Astarte compressa llont I^orway (McAnd,). 



Astarte striata Leach. Greenland. 



Gouldia minima Mont Yillafranea. 



Cardita calyculata Poli. Sicily. 



Unio litoralis Lam Cordova. 



Unio tuinidus Lxets British. 



Unio pictorum Linn British. 



Mytilus edulis Linn British. 



Mytilus minimus Poli Mediterranean. 



Mytilus — — — sp. ind Mediterranean. 



Crenella decussata Mont British. 



Crenella decussata Moiit Greenland. 



Crenella faba Fair Greenland. 



Crenella marmorata Forhes British. 



Crenella (Modiolaria) discors Linn British. 



Crenella (Modiolaria) discors Liiin Finmark (McAnd.). 



Modiolq, barbata Linn British. 



Modiola phaseolina Phil Norway (McAnd.). 



Modiola tulipa Lam British. 



Modiola modiolus Linn British. 



Modiola costulata U'Orh. non Plsso. . . . Canaries (McAnd.). 



Dreissena polymorpha Pallas British. 



4tli Order — PECTINACEA. 



Byssoarca Nose Linn Mediterranean. 



Byssoarca tetrogona Pol British. 



Barbatia lactea Linn British. 



Barbatia lactea Linn Dalmatia. 



Barbatia barbata Linn Cadiz (McAnd.). 



Pectunculus glycimeris Linn British. 



Pectunculus violascens Linn Mediterranean. 



Nucula tenuis Mont '. Scotland (McAnd.), 



Nucula nucleus Linn British. 



Kucula nitida Mont Mediterranean. 



Nucula radiata LLane British. 



Leda. minuta Moll Greenland. 



