— 17 — 



Genus Mactra, L. et Lamk. 



M. helvacea, Chemnitz. Kare ; in sancly places. 



M. stultorum, L. Commou in sandy places, where a whitish 



variety is also to be founcl. 

 M.triangula, Benieri. Very rare. 



Genus- Bornia, Phil.j syn. Kellia, Turtonii ? 



"B. corbuloicles, Phil. Common. 



B . inflata, Phil. Bare. Near Fort Bicasoli. 



B. seminulum, Phil?; syn. Carclium rubrum ?, Mont. Rather 



rare, Gozo. Founcl on Sea Urchins. 



Genus Solenomya, Lamk. 



S. mediterranea, Lamk. Maltese nama Fazola tal bahar. 

 Somewhat rare. Amongst the roots of seaweed. At 

 Binella, in the Great Harbour; and near Fort San Feli- 

 ciano, in Marsascirocco, and other places. 



Genus Crassatella, Lamk. 



Crassatellcs fossiles. 



C. turnida? Found in the calcareous sandstone (Mamo). 



VI. Familia COBBULACEA, Lamk. 



Genus Corbula, Brug. et Lamk. 



C. nucleus, Lamk. Very frequent in sandy mud. 

 C. mediterranea, Costa. 



Genus Pandora, Brug. et Lamk. 



P. flexuosa, Sowb ? Very rare. 

 P. obtusa, Leach. * Very rare. 



