152 Revision of British Mollusca, 



Genus 2. Teiforis, Deshajes. 

 Subgenus Monophoeus, Grillo, 187 7 =Biforma, B. D. & D. 1884. 



1. Triforis perviersa (Linn.),= Cerithium perversum^ Jeffreys, 

 B. C. iv. p. 261. 



Genus 3. Bittium, Gray. 



1. Bittium reticulatum (Da i^o'&ia.) , = Cerithium reticulaturrij 

 Jeffreys, B. C. iv. p. 258. 



Genus 4. LovENELLA, G. O. Sars, 1878 

 {=CerithieUa, Verrill, 1882). 



1. Lovenella metula {JjOYQn),= Cerithium metula, Jeffreys, 

 B. C. iv. p. 256. 



* Porcupine,' 1869, Stats. 23 a, to the south of Rockall, in 

 420 fath.; 65 N.E. of Shetland, 345 fath. ; 'Knight Er- 

 rant,' St. 7, 540 fath., to the west of the " Wyville Thomson 

 Ridge ; " ' Triton,' St. 10, in the same district as the last. 



Its distribution is Spetsbergen {Friele) ; Norway {A. M. N. 

 ^c.) ; Finniark (6r. 0. Sars) ; Bay of Biscay and off coasts 

 of Spain and Portugal, ' Porcupine,' 1870 (/. G. J.). 



Genus 5. Cerithiopsis, Forbes & Hanley. 



1. Cerithiopsis tuhercularis (Mont.). 



Var. albescens, Marshall, Journ. of Conchol. vol. vii. 



(1892-4) p. 259. 

 Var. scalarisy Monterosato, id. ib. p. 259. 

 Var. acicula, Brusina, id. ib. p. 259. 



2. Cerithiopsis Barleei, Jeffreys. 



3. Cerithiopsis pulchella, Jeffreys. 



4. Cerithiopsis Metaocoe (Delia Chiaje). 



5. Cerithiopsis costulata (MoUer) . 



Genus 5. L^OCOCHLIS, Metzger & Mayer. 

 1. Lceocochlis granosa (S. V. Wood). 



Cerithium grcmosiim, S. V. Wood, Crag Moll. Palseont. Soc. 1848, p. 73, 



pi. viii. tig. 9. 

 Triforis McAndrei, H. Adams, Proc. Zool. Soc. 1848, p. 1. 

 Triforis nivea, M. Sars, Chr. Videns.-Selsk. Forhand. 1858, p. 85. 

 Lceocochlis ponmteranice, Dunker & ISletzger, Nach. d. deutsch. mal.- 



zool. Gesellscli. 1874, p. 7, and Nordsee Jahrb. der ' Pommerania,' 



1874, pp. 249 & 258, pi. vi. fig. 3, and woodcut p. 264, fig. 3. 

 Cerithium granosum, Wyville Thomson, Depths of the Sea, 1873, p. 463. 

 Lceocochlis granosa, G. 0. Sars, I. c. p. 190, pi. xiii. fig. 6 ; Jeffreys, 



Mollusca of the ' Lightning ' and ' Porcupine ' Expeditions, Proc. 



Zool. Soc. 1885, p. 62. 



