152 Revision of British Mollusca, 



Genus 2. Teiforis, Deshajes. 

 Subgenus Monophorls, Grillo, 1877 = Bifonna, B, D. & D. 1884. 



1. Tn'foris perversa (Linn.),= Cerithium perversum^ Jeflfreys, 

 B. C. iv. p. 261. 



Genus 3. Bittium, Gray. 



1. Bittium reticulatum (Da Costa,), = Cerithium reticulatumy 

 Jeflfreys, B. C. iv. p. 258. 



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

 {= Cerithiella, Verrill, 1882). 



1. Lovenella metula {IjOY en), = 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 

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



Its distribution is Spetsbergeii {F'riele) ; Norway {A. J/. N. 

 i^c.) ; Finmark (6^. 0. Surs) ; Bay of Biscay and off coasts 

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



Genus 5. Cerithiopsis, Forbes & Hanley. 



1. Cerithiopsis tuhercularis (Mont.). 



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



(1892-4) p. 259. 

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

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



2. Cerithiopsis Barleei, Jeflfreys. 



3. Cerithiopsis pulchella, Jeflfreys. 



4. Cerithiopsis Metaxce (Delia Chiaje) . 



5. Cerithiopsis costulata (MoUer). 



Genus 5. L^OCOCHLIS, Metzger & Mayer. 

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



Cerithium granostim, S. V. Wood, Crag Moll. Palteont. Soc. 1848, p. 73, 



pi. viii. tig. y. 

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

 Triforis uirea, M. Sars, Chr. Videns.-SeL-k. Forhnnd. 1858, p. 8o. 

 Laocochlis pojnmeranice, I)unker &; Metzger, Isacb. d. deutscb. mal.- 



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



1874, pp. 249 & 258, pi. vi. fig. 3, and woodcut p. 2U4, fig. ^3. 

 Cerithium granosum, AV vville Tbomson, Deptbs of tbe Sea, 1873, p. 463. 

 Lceocochlis yranosa, G.'O. Sars, /. c. p. 100, pi. xiii. fig. 6; Jefireya, 



Mollu.sca of tbe ' Lightning ' and ' Porcupine ' Expeditions, Proc. 



Zool, Soc. 1885, p. 52. 



