CASSIDARTA TYRRIIENA. 515 



obtained, however, from many exposures of the Coralline and Rod Crags. 

 M. Van den Broeck has reported it from tlie zone a Pectunculus pilosus of Antwerp 

 (Bolderien), l)ut it is unknown from any other Miocene horizon of any part of 

 Europe. 



Var. ecatenata, S. V. Wood. Plate XLV, figs. 15, 16. 



1872. Cassidaria bicntenafa, var. ecaiennta, S. V. Wood, Mou. Crai; Moll., 1st Suppl., pt. i, p. 11, 



pi. vi, figs. 2a, 26. 

 1868 — 81. Cassidaria hicafenata, Nyst in d'Halloy, Abr. elem. de Ge'ol., p. G12, 1868 ; var. ecatenata, 



Couch. Terr. tert. Belg., p. 34, pi. ii, figs. 14 a, 14 e, 1881. 



Varietal Characters. — Differs from the type in the absence of a distinct keel 

 and of any cancellation on the upper part of the upper whorls. 



Dimensions. — L. 85 mm. B. GO mm. 



Distribution. — Not known living. 



Fossil : Coralline Crag : near Orford. Waltonian Crag : Little 

 Oakley. Newbournian: Sutton, Felixstowe. (Probably elsewhere in the Red Crag.) 



Bemarls. — The specimen now figured (fig. IG) from the Newbournian Crag of 

 Sutton belongs to the Wood Collection in the Norwich Museum, and corresponds 

 with the var. ecatenata., described by him in 1872, in the absence of distinct 

 angulation and the want of the special tuberculation characteristic of the type- 

 form. There is another specimen in the Crowfoot Collection at Norwich, also 

 figured (fig. 15), having a strong varix across the centre of the body-whorl, the 

 origin of which is explained by Wood's fig. 2b of the immature shell shown on the 

 plate named above. 



Cassidaria tyrrhena (Chemnitz). Plate XLV, fig. 17 {continued from Vol,. I, p. 58). 



1914. Cassidaria tyrrhena, F. W. Harmer, Plioc. Moll. Gt. Brit., vol. i, p. 58, pi. ii, fig. 13. 



BemarJcs. — When examining a consignment of shelly material he had received 

 from Father Codd (now the Bishop of Ferns), which had been collected at 

 Blackwater in the Wexford gravels, my colleague Alfred Bell detected a small 

 fragment, now figured, which we both think may be identified with (). tyrrhena. 

 It shows the varix which is found occasionally in specimens of C. hiratenata from 

 the Crag, as it is sometimes in recent examples of the present species. 



Genns FICULA, Swainson, 1840. 

 Ficula condita (Brongniart). Plate XL VI, fig. 12. 



1823. PyruJa condita, Brongniart, Mem. Terr. calc. Vicentin, p. 75, pi. vi, fig. 4. 

 1825. Pyrula condita, Basterot, Mem. Geol. Env. Bordeaux, p. 67. 



1842—48. Pyrula reticulata, S. V. Wood, Ann. Mag. Nat. Hist. [1], vol. ix, p. 543, pi. v, fig. 17, 

 1842 ; Mou. Crag Moll., pt. i. p. 42, pi. ii, fig. 12, 1848. 



