228 PLIOCENE MOLLUSCA. 



Jeffreys gives this species from Gredgrave in his list of Crag Molkisca published 

 Avith Prestwieh's paper. 



Drillia galerita (Philippi). 



1844. Pleurotoma galeritum, Philippi, Enum. Moll. Sicilise, vol. ii, p. 172, pi. xxvi, fig. 15. 



1847. Pleurotoma Eochettas, Bellardi, Mem. E. Accad. Sci. Torino [2], vol. ix, p. 597, pi. iv, fig. 1. 



1869. Pleurotoma (jalerita, Jeffreys, Brit. Conch., vol. v, p. 221, pi. cii, fig. 6. 



1875. Pleurotoma galerita, Seguenza, Boll. K. Com. Greol. Italia, vol. vi, p. 206, no. 162. 



1877. Brillia galerita, Bellardi, Moll. Terr. Terz. Piem., pt. ii, p. 123, pi. iv, fig. 13. 



1889. Brillia galerita, Sacco, Boll. See. Geol. Ital., vol. ix, p. 272, no. 4056. 



1890. Pleurotoma Galeritum, Carus, Prod. Faun. Medit., vol. ii, p. 414. 



Specific Characters. — Shell small, solid ; whorls slightly concave above, dis- 

 tinctly keeled, the keel being placed in the centre of each whorl and oi-namented 

 by a single row of tubercles ; the spiral sculpture consists otherwise of minute 

 and closely-set lines above the keel, and somewhat stronger and more distant ones 

 below it on the body-whorl ; suture distinct ; mouth oval, angulated above and 

 by the keel ; outer lip thin ; canal short, turning slightly to the left ; columella 

 sinuous, excavated above. 



Dhnensions. — L. 12 mm. B. 5 mm. 



Distribution. — Recent: Mediterranean, Atlantic to Western Hebrides and 

 Shetland. 



Fossil : Waltonian Crag : Little Oakle}-. 



Lower Pliocene : North Italy. Upper Pliocene : Sicily — Altavilla. 



Bemarks. — I have found several specimens at Oakley, some a good deal worn, 

 which correspond more or less closely with Bellardi's figures of D. galerita. They 

 are not unlike that described under the same specific name by Jeffreys {op. cit.), 

 which he states was dredged from a depth of 196 fathoms in the Western Hebrides 

 about fifty miles north of the Butt of Lewis. None of these agree altogether with 

 Philippi's original figure, but as that was an enlargement of a much smaller shell 

 it is possible the artist did not represent it very accurately. Bellardi, however, 

 identifies his Italian Pliocene fossils and Jeffreys' specimen with Philippi's species. 

 On the other hand. Prof. Kobelt doubts whether Jeffreys' identification was 

 correct, regarding his shell as P. semicolov^ ^ DrUlia icenorum, S. V. Wood,^ a 

 view I am unable to accept ((/. PI. XXVII, figs. 16, 17). I prefer to follow 

 Bellardi's grouping of the shells in question, referring doubtfully with them 

 my Oakley fossils to Philippi's P. galeritum. 



' Icon, schaleutrag. europ. Meeresconch., vol. iii, p. 332, pi. Ixxxi, figs. 22, 23. 



