264 CERITHIIDvE. 



rows of tubercles On each whorl) , said to have been found 

 at Lindisfarne, is likewise tropical. C. fascatum of 

 Linne= Melcmia Matoni, Gray, was given by Pulteney as 

 one of Bryer's Weymouth shells ; it inhabits brackish 

 water in Senegal, and is not British. 



C. tuberculatum, Linn.,= C. vulgatum, Bruguiere, was 

 recorded by Pennant as Northumbrian, and by the late 

 Mr. W. Thompson as Irish. These localities are more 

 than questionable, and must have originated in some 

 mistake ; but I dredged in the summer of 1865 a few 

 dead specimens on the coast of Jersey. M. Cailliaud 

 states that he has frequently found rolled specimens on 

 the beach in different places of the Departement of Loire- 

 Inferieure. I believe the occurrence of this species 

 under the above circumstances in the Channel Isles and 

 Brittany is owing to geological changes, by which the 

 sea-bed has been upheaved and lowered, so as to make 

 the shells semifossil. C. tuberculatum is common every- 

 where in the Mediterranean, Adriatic, and iEgean, as 

 well as on the coasts of Spain, Portugal, and the Ca- 

 naries, from the shore to 50 f. Sars mentions a speci- 

 men having been taken at Bergen from the throat of a 

 codfish. 



C. costatum (Strombiformis costatus, Da Costsi= Strom- 

 bus turboformis, Montagu) should also be rejected as 

 exotic; it is a common West- Indian shell. Dillwyn 

 mistook C. reticulatum for this species; Leach was as 

 far wide of the mark in considering it the young of 

 Aporrhais pes-pelecani. 



C. subulatum (Murex subulatus, Mont.) must be con- 

 signed to the same limbo. Laskey is reported to have 

 found it at Scalasdale in the sound of Mull ! 



