ALVANIA (MASSOTIA) LACTBA. " G21 



Distrihntion. — Recent : Coasts of (Treat Britain and Ireland, mostly southern 

 and western (littoral zone, not common). 



Atlantic coast from the English Channel to Gibraltar, Mediterranean and 

 Adriatic, generally diffused. 



Fossil : Selsey. 



Upper Pliocene : Val d'Era, Legoli. 



Pleistocene : Rhodes (B.D.D.). 



Reiiiarks. — This is another characteristically southern and Mediterranean 

 species which as an English fossil has l^een reported from Selsey only. Consider- 

 able difference of opinion exists as to whether it should be known \inder Montagu's 

 specific name of striafiihi or Da Costa's of carinafa. As to this I refer students 

 of the Crag to the various works quoted above. The subgeneric (or generic) 

 name of Galeodina proposed by the Marchese di Monterosato in 1884 has been 

 accepted by most recent authorities and by the Conchological Society of Great 

 Britain. 



Snb-genns MASSOTIA, Dautzenberg and Dollf us, 1 884. 

 Alvania (Massotia) lactea (Michaud). Plate L, fig. 41. . 



1832. Rissoa lactea, Michaud, Descr. du Genus Eissoa, p. 9, figs. 11, 12. 



1836—44. Bissoa lactea, Philippi, Euum. Moll. Sic, vol. i, p. 152, 1836; vol. ii, p. 129, 1844. 



1853. Rissoa lactea, Forbes and Hanley, Brit. Moll., vol. iii, p. 76, pi. Ixxix, figs. 3, 4. 



1859. Bissoa lactea, G. B. Sowerby, 111. Ind. Brit. Shells, pt. xiii, fig 12. 



1867 — 69. Rissoa lactea, Jeffreys, Brit. Couch., vol. iv, p. 7, 1867 ; vol. v, p. 206, pi. Ixvi, fig. 2, 



1869. 

 1868. Rissoa (Alvania) lactea, Weinkauff, Conch. Mittelni., vol. ii, p. 309. 

 1874. Bissoa (Alvania) lactea, Seguenza, Boll. R. Com. Geol. Ital., vol. iv, p. 4, no. 371. 

 1878 — 84. Bissoa (Alvania) lactea, Monterosato, Enum. e Sinou. Conch. Medit. (Giorn. Soc. Sci. Nat., 



Palermo, vol. xiii), p. 84, 1878; Massotia lactea,'No\n. Gen. e Spec. Conch. Medit., p. 65, 1884. 

 1884. Bissoa (Massotia) lactea, Bucquoy, Dautzeul)erg et Dollfus, Moll. mar. Rouss., vol. i, p. 298, 



pi. XXXV, figs. 7 — 13. 

 1889 — 96. Bissoa textilis, Sacco, Boll. R. Com. Geol. Ital., vol. viii, p. 356, no. 1998, 1889; Alvania 



(Massotia) lactea, Moll. Terr. Terz. Piem., pt. xviii, p. 28, 1895. 

 1890 Bissoa (Massotia) lactea, Carus, Prod. Faun. Medit., vol. ii, p. 334. 

 1892. Alvania lactea, Locard, Coq. mar. Cotes de France, p. 157. 

 1892. Bissoa lactea, A. Bell, Rep. Yorks. Phil. Soc., p. 6'S. 



1907. Bissoia (Alvania) lactea, Scalia, Att. Accad. Gioen. Sci. Nat. Catania [4], vol. xx, p. 33, no. 230. 

 1913. Bissoa (Massotia) lactea, Dautzenberg, Feuille des Jeunes Natur., vol. xliv, p. 30, pi. ii, fig. 15. 



Specific Gluiracters. — Shell oval, compressed towards the mouth ; whorls 5 — 6, 

 rather convex, the last tumid, three-fourths the total length, the first two niiuute ; 

 ornamented by numerous fine, curved, longitudinal ribs, closely set, dying out on 

 the body-whorl with an occasional varix, and by delicate spiral strife, extending 

 to the base, which cross the ribs, but do not become nodulous where they inter- 



81 



