234 PLIOCENE MOLLUSCA. 



Var. minor, Monterosato. Plate XXVIII, figs. 18, 19. 



Dimensions. — L. 10 mm. B. 4 mm. 



Vistrthution. — Recent : Mediterranean . 



Fossi] : Coralline Crag : Sutton. Waltonian : Little Oakley. 



Remarks. — The variety of G. imrpnrea here figured seems to agree with the 

 type form except in size. It agrees with a Recent shell figured with it which I 

 received from M. Dautzenberg under the above name. 



Clathurella Philberti (Michaud). Plate XXVIII, figs. 20, 21. 



1829. Pleurotoma Philberti, Michaud, Bull. Soc. Liun. Bordeaux, vol. iii, p. 261, pi. iii, figs. 2, 3. 

 1836-44. Pleurotoma variegaivm, Philippi, Enum. Moll. Sicilise, vol. i, p. 197, pi. xi, fig. 14, 1836 ; 



P. PJtUberti, vol. ii, p. 165, 1844. 

 1867. Befrancia ]}urpurea,\a.r. Philberti, Jeffreys, Brit. Conch., vol. iv, p. 370. 



1873. Defrancia purjmrea, var. Philberti, Seguenza, Boll. E. Com. Geol. Italia, vol. iv, p. 298, no. 127. 

 1877. Homotoma Philberti, Bellardi, Moll. Terr. Terz. Piem., pt. ii, p. 273. 

 1883. C/n</iureZZa j3itr2;?*rea, var. P7«76e}-^/, Bucquoy, Dautzenberg et Dollfus, Moll. mar. Eoussillou, 



vol. i, p. 91, pi. xiv, figs. 13 — 17. 

 1890. Homotoma Philberti, Sacco, Boll. Soc. Geol. Ital., vol. ix, p. 281, no. 4287. 

 1890. Clathurella Philberti, Carus, Prod. Faun. Medit,, vol. ii, p. 425. 

 1905. Clathtirella (Philbertia) Philberti, Kobelt, Icon, schalentrag. europ. Meeresconch., vol. iii, 



p. 360, pi. xcv, figs. 24, 25 ; pi. xcvi, figs. 11, 12. 



Specific Characters. — Shell fusiform, turreted, smaller and more slender than 

 the type form of G. purpurea ; whorls 8, slightly convex ; ornamented by numerous 

 longitudinal and transverse ridges, about equal in size, giving the shell a reticulate 

 appearance ; suture fairly deep ; mouth ovate, narrow ; outer lip grooved within, 

 not thickened and toothed internally as in G. purpurea ; canal distinct, short, 



Dimension><. — L. 10 mm. B. 4 mm. 



Distribution. — Recent : "West European, generally diffused in the Mediterranean 

 and ^gean. 



Fo.isil : Waltonian Crag : Little Oakley. 



Upper Pliocene : Italy (Sacco). Pleistocene: Sicily — Messina, Ficarazzi. 



Remarlcs. — This form has been variously regarded as a distinct species and as 

 a variety of G. purpurea, to which it is closely allied. 



M. Dautzenberg has kindly sent me some Recent specimens of this shell from 

 the Mediterranean, one of which I fig^ure for the cfuidance of future collectors, 

 together with another from Oakley, which although not quite perfect, appears to 

 correspond with it. I hope something better may turn up hereafter. 



Homes gives G. Philberti irom. the Miocene beds of the Vienna basin (Foss. Moll. 

 Tert. Wien, vol. i, p. 372, pi. xl, fig. 17), but as he makes no mention of G. pur- 



