S20 



PRN/KAD/E. 



bably from not having seen any Mediterranean specimen of 

 P. caramotc, gave the name of P. trisulcatus, as identical 

 with that to which the former name has been given by 

 Rondeletius, by Risso and Edwards. In this conclusion I 

 am borne out by the opinion of the last-mentioned distin- 

 guished naturalist. Like some other of the Mediterra- 

 nean species found on our shores, it is very rare with us. 

 Leach mentions but two specimens known to him, nor is it 

 mentioned in any of the local Faunas either of England or 

 Ireland. The two specimens known were both taken on 

 the Welsh coast. 





