86 LITTOUINIDiE. 



their range, so is the distribution of Beanii, as compared 

 with that of calathus. 



Exmouth ; Plymouth ; collected by Mrs. Eichard Smith 

 in sand from Cornwall (Jeffreys) ; in from fifteen to 

 twenty fathoms, Caernarvon Bay (M'Andrew) ; Oban : 

 Loch Carron and adjacent coast ; Lerwick and Deal Voe, 

 Zetland (Jeffreys) ; in fifteen fathoms, Eda Sound, and in 

 seven fathoms, Sanda Sound, Orkney, among corallines 

 and broken shells ; also in fifty fathoms between Fair 

 Island and Orkney (Thomas). Dublin Bay (Alder) ; 

 among nullipores in Bantry Bay (Thompson) ; Birtcrbuy 

 Bay, in Gal way (Jeffreys). 



It ranges to the coast of Sweden (Loven). 



R. ABYSsicoLA, Forbcs. 



Elongated oval-conic, thin, white, very closely decussated by 

 wavy spiral, and longitudinal lamellar lyra;, the latter of which 

 are the more prominent. Whorls not peculiarly rounded ; spire 

 as long as the body, blunt at the apex : suture profound : mouth 

 roundish : throat smooth. 



Plate LXXVIII. fig. 1, 2, and (animal) Plate J. J. fig. 3. 



This pretty species was first announced at the meeting 

 of the British Association at Cambridge in 1845. It 

 has an elongated oval-acute figure, is not very strong, 

 is of an uniform semitransparent white, and often a 

 little glossy. The sculpture reminds us of that of lactea, 

 and consists of close well-marked and very immerous 

 longitudinal lamellar ribs, which do not extend to the 

 base of the body, and still more densely disposed spiral 

 costellse ; the former are often oblique, the latter almost 

 always undulated. The spire, which is, if anything, 

 rather longer than the body, consists of quite four volu- 

 tions, that arc divided by a canaliculated or excavated 



