Order CONCHIPERA 93 



Fam. MytilidSB continued. 

 Lithophaga dactyl us. Mediterranean. 



Fam. Arcadae 



Area Nose. Mediterranean. 

 ., pacitica Solomon, Islands. 

 ,, barbata. Mediterranean,, 

 hirsuta 



,, angulata. Solomon Inlands. 

 ,, dicurvata. South Africa, 

 ,, diluvii. 



Pectunculus pectiiiil'onuis. India. 

 pilo^us. ,, 



glycimeris. ,, 



,, < sp. worn valves. 



Axiiuea ^lyeimeris. Britain. 

 1 ,, flaiumea 

 ^ Yoldia myalls. Norway. 



Fam. Unionidse. 



Unio niargaritifems. Britain. 



With nine River - Pearls found in this species of Shell. 



Unio margaritiferus. Viareyyio. Italy. 



,, pictorum. Britain. 



,, rhomboideus. 



tuinidus. Britain. 



complanatus. 



? sp. India. 



