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M. afer, Lamk. Rare. Attaehed to the keels of vessels. 

 Length 65 to 113 nini. 



Gcnus Pinna, L. 



P. rudis, L. Malteso name Nackra tal harira. Rare. 



Attached by its byssus to rocks and sand in Calcara 



Creek. 

 P. squamosa, Gm. Somewhat common in the Marsamu- 



scetto Harbour and other places. Specimens have been 



taken 33 English inches long. 

 P. muricata, Polii. More common. Found almost every- 



where. 

 P. vitrea, Gm. 

 P. pectinata, L. * Not common. 



Genus Avicula, Lamk. 



A. tarentina, Lamk. Maltese name Farfett. Not common, 

 Attached by threads to Gorgonia. 



XVI. Familia PECTINOIDEA, Lamk. 



Gcnus Lima, Brug. 



L. inflata, Lamk. Common. 



L. squamosa, Lamk. Maltese name Sbiba. Common. 



L. subauricula, Mont. 



L. tenera?, Turtoj. 



Genus Pecten, Brug. 



P. jacoboeus, L. Maltese name Pellegrina. Not common. 



P. sulcatus, Lamk. Maltese name Tagen. Very common. 



P. polymorphus, Bronn. Rare. 



P. hvalinus, Polii. Rather common. 



P. testae, Bivona. Very rai'e. 



P. opercularis ? , Lamk. 



