MENRSTTTO ALBITLA. 581 



VUtrihiiiioii — Recent: Guei-iisoy, Fiilnioutli, l<]xinuiit]i, co. Clare, Tiirlyot-baiik, 

 Lamlash Bay, N.B. Freiicli Coast, Mediterranean, Adriatic, Morocco. 

 Foi^stl. : Portrusli. 



Upper Pliocene : Astiano, Monte Mario (Ponzi), Altavilla. 



Pleistocene: Livorno, Messina, Monte Pellegrino, Reg-g-io, San (jiiovanni. 



Remaiis.—The specimen of the cliavining and easily recognised shell now 

 figured was sent to Mr. A. Bell by J\lr. Kennard, liaving l)een obtained from the 

 Holocene de})Osit at Portrusli. 1 am not aware that it has been verified as a fossil 

 from any other British locality.^ 



Genus MENESTHO, Moller, 1842. 

 Menestho albula (Fabiicius). Plate L, fig. 2. 



1780. Turbo alhvhn^, Fabricius, Fann. GTroenl., p. 394. 



1842. Menestho albula, Miiller, Ind. Moll. Groenl., p. 10. 



1858. Monoptygma (Menestho) albula, H. and A. Adams, Gren. Rec. Moll., vol. i, p. 236. 



1871. Menestho albula, Crosskey and Robertson, Trans. Geol. Soc. Grlasgow, vol. iii, p. 335. 



1871 — 84. Menestho albula, Jeffreys in Prestwicli, Quart. Journ. Geol. Soc, vol. xxvii, p. 489, 1871 ; 



Odostomia albula, Ann. Mag. Nat. Hist. [4], vol. xix, p. 242, 1877; M. albula, in Lamplugh, Quart. 



Journ. Geol. Soc, vol. xl, p. 319, 1884. 

 1877. Menestho albula, Morcli in Rink, Dan. Groenl., p. 436. 

 1877. Menestho albula, Etlieridge in Jas. Geikie, Gt. Ice Age, ed. 2, p. 596. 

 1883. Menestho albula. Bush, Proc U.S. Nation. Mus., vol. vi, p. 242, pi. ix, fig. 11. 

 1887. EnUmella (Menestho) albula, P. Fischer, Man. Conch., p. 789. 

 1898. Menestho albula, Posselt, Medd. oni Grihil., vol. xxiii, p. 234. 



Specific Characters. — Shell minute, fairly solid, ovate ; whorls 5, convex, tlie 

 upper one small, twisted ; ornamented by strong and prominent spiral ridges, seven 

 or eight on the last Avhorl, reaching the base ; suture deep and channelled ; spire 

 elongate, regularly diminishing upwards; mouth small, oval, angulate above; 

 outer lip gently rounded, not expanded ; inner lip reflected on the pillar. 



Dimensions. — L. 4 mm. B. 2 mm. 



Disfrihutiun. — Recent : Greenland, Spitzbergen — Ice fiord. Labrador, Grand 

 Banks, Halifax, North Japan (St. John). 



Fossil : Waltonian Crag : Walton-on-Naze. 



Pleistocene : Bridlington, Paisley, Montreal. 



Remarks.— The genus Menestho, of which the present arctic species is taken as 

 the type, appears to have been rather better represented as a British fossil than is 



'Jeffreys reported it from the Coralline Crag in his Zool. Soc. paper (op. eit., p. 352), but this 

 I think, must have been a mistake — possibly "Coralline Crag" should be read "Coralline zone" as 

 in the Brit. Conch., vol. iv, p. 159. 



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