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 (Scutibrarichiata.) 

 Genus Gadinia, Gray. 

 G. garnoti, Peyr j syn. Pileopsis. Found on tlie sea-sliore. 



III. Familia SEMIPHYLLIDIA, Lamk. 



(Inferibranchiata.) 



Genus Pleurobranchus, Cuv. 



P. aurantiacus, «Risso. * Not common. 

 P. (Bertella) porosa. * 



Genus Umbrella, Lamk. 

 U. mediterranea, Lamk. Rare. 



Genus Tylodina, Rafinesque. 

 T. rafinesquii, Phil. * Very rare. Found on Madrepores. 



IV. Familia CALYPTRjEACEA, Lamk. 

 {Scutibranchiata.) 



Genus Emarginula, Lamk. 



E. cancellata, Pbil. 

 E. elongata, Costa. 



E. buzardii, Peyr. Ratber common. Attacbed to Nullipores. 



Genus Fissurella, Brug. 



F. costaria, Desh. Maltese name, Mhara tat-torock. Not 



common. Found attacbed to rocks. 



