be filipendulous (?) The examples foundin Malta do tbrow 



out a byssus. 

 C. rusticum ? Chem. Maltese naiue Arzel tal Marsa. 

 C. edule? L. 



All the above species of Cardium arc found iu niuddy bottoms. 



Genus Cardita, Brug. 



C. sulcata, Brug. Maltese name Leusa. Free without 



byssus. Common. 

 C. lithophagella, Lamk. Rare. Iu vacated holes of Li- 



thophaga. 

 C. trapezia, Brug. | Atiached to marine objects by 



C ealyculata, Brug { a byssus. 



C. corbis ? Phil. * Rare. 83 milliinctres in len^th. 



O 



Carditcs fossiles. 

 A fossil species of Cardita ? is found in Bed No. 3, the clay 

 bed. (T.Wright). 



Genus Isocardia, Lamk. 



I. cor, Lamk. Maltese name Hauha. Rare. 



Iocardue fossiles. 

 Casts of Isocardia are found in Bed No. 2, the yellow sand. 

 (T. Wright). 



XI. Familia ARCACEA, Lamk. 



Genus Arca, Lamk. 



A. noe, Lamk. Maltese namo Pediporck. Common. 

 Attached to submarine rocks by a ligament. Iii summer, 

 when the eggs are developed in thc ovary, the fiesh of 

 the animal is liarsli to the taste. 



A. navicularis, Brug. Ptare. Attached to Madrcpores. 



A. barbata, L. Oa submersed rocks. 



