8 LITTORINID^. 



Bay, Jersey (Hanley, Norman, and Dodd) ; Herm (Mac- 

 culioch, Lukis, and Barlee) ; Barricane, north Devon 

 (Miss Jeffreys, who never was in the Channel Isles or 

 abroad). It is our rarest Rissoa, Sicihan tertiaries 

 (Philippi) . The only northern locality to my knowledge 

 is Bohnslan in the south of Sweden, where Malm dredged 

 two specimens (both dead) in different places. By his 

 kind permission one of them, from 12 f., is now before 

 me. Its southern range is extensive, and embraces the 

 north and west of France (Collard des Cherres, Cailhaud, 

 Aucapitaine, and others), Vigo, 4 f., Gijon and Faro in 

 Algarve, and Comnna (M'Andrew), Adriatic (Heller), 

 Dalmatia (Brusina) , northern shores of the Mediterra- 

 nean (Michaud, J. G. J., and others), Ajaccio (Requien), 

 Naples (Scacchi), near Catania (Philippi), Algeria 

 (M*^ Andrew and Weinkauff) . 



Turbo canceUatus (Beudant) of Lamarck. 



3. R. cancella'ta*. Da Costa. 



Turbo cance/latKs, Da Costa, Br. Conch, p. 104, pi. viii. f. 6, 9. R. crc- 

 nulata, F. & H. iii. p. 80, pi. Ixxix. f. 1, 2. 



Body milk-white, with a pinkish spot above the head : imUial 

 lappet small, as in B. striatula : palllal filaments slender and 

 microscopically ciliated, resembling minute auxiliary tentacles, 

 one at each corner of the mouth of the shell: snout narrow 

 and cloven at the point, extensile : tentacles cylindi^ical, but 

 somewhat compressed on the upper and under sides, finely and 

 closely ciliated aU over ; they are occasionally borne erect, or 

 now and then upturned : eyes on small tubercles : foot squarish 

 in front, with small angular corners, contracted in the middle, 

 and attenuated towards the tail, which is bluntly pointed : 

 appendage short, not projecting beyond the tail, apparently 

 bicuspid, but really consisting of three filaments, one of which 

 is smaller than the other two and is sometimes a mere bidb. 



Shell conic-oval, solid, opaque, somewhat glossy : sculpture^ 

 strong longitudinal ribs, 16 of which are on the body-whorl, 



* Latticed. 



