516 PLIOCENE MOLLUSCA. 



1853. Pyrula concUta, HiJrnes, Foss. Moll. Tert. Wien, vol. i, p. 270, pi. xxviii, figs. 4—6. 



1871. Pyrula acclinis, Jeffreys (pars), iu Prestwicli, Quart. Journ. G-eol. Soc, vol. xwii, pp. 145, 490. 



1872. Pyrula cancellata, A. and R. Bell, Proc. Geol. Assoc, vol. ii, pj). 204, 210. 



1874—84. Ficula condita, Van den Broeck, Ann. Soc. malac. 'iBelg., vol. ix, pp. 120, 134, 187, 1874 ; 



F. intermedia, vol. xvii, p. cliv, 1882 ; vol. xix, pp. 18, 30, 35, 1884. 

 1875. Pirula {Ficula) condita, Dollfus, Etud. Geol. Terr. tert. Cotentin, p. 367. 

 1881. Ficula intermedia, Nyst, Concli. Terr. tert. Belg., p. 40, pi. i, fig. 8. 

 1885. Ficula condita, De Gregorio, Concli. Medit. viv. e foss., p. 317. 

 1890. Pyrula reticulata, C. Reid, Plioc. Dep. Brit., p. 254, pi. iii, fig. 4. 

 1890—91. Ficula condita, Sacco, Boll. Soc. Geol. Ital., vol. ix, p. 203, no. 2412, 1890; Moll. Terr. 



Terz. Piem., pt. viii, p. 23, pi. i, fig. 27, 1891. 

 1898. Pyrula reticulata. F. W. Harmer, Quart. Journ. Geol. Soc, vol. liv, p. 319. 

 1912. Ficula reticulata, Tescli, Med. v. d. Rijks. v. Delfstoffen, No. 4, p. 78, no. 186. 



1916. Ficus reticulata, R. B. Newton, Journ. of Couch., vol. xv, pp. 73, 111, 141, pi. iv, figs. 1, 2. 



1917. Ficula condita, A. Bell, Geol. Mag. [6], vol. iv, pp. 412, 413. 



Specific Characters. — Shell large, pyriforra, the body-whorl and mouth occupying 

 nearly the entire length, squarely angulate and flattened above, excavated and 

 narrowed below ; spire excessively short and depressed ; ornamented by numerous 

 fine but well-marked transverse ridges with still finer ones in the interspaces, 

 crossed by delicate longitudinal strife and by the lines of growth. 



Dimensions. — L. 60 — 65 mm. B. 35 — 42 mm. 



Distribution. — Not known living. 



Fossil: l^oxstones. Lenham. Coralline Crag: Ramsholt, Gedgrave. 

 Waltonian : Walton-on-Naze. Newbournian : Sutton, Waldringfield. 



Miocene : Belgium, France, Vienna basin, Germany, Italy. 



Pliocene (Casterlien, Scaldisien) : Belgium — Waenrode. Scaldisien : Holland, 



Bemarhs. — Considerable difference of opinion has existed as to the correct 

 determination of the shell figured by Wood as Pi/rnla reticulata,. Of late years it 

 has been more generally referred to the genus Ficula (Ficus) and to the species 

 condita, with which it seems to me most nearly to agree. It is a distinctly 

 Miocene form, but appears to have been also a rare survivor to Pliocene times. 

 Specimens occurring in the Coralline Crag present no appearance of derivation. 

 Those from the Red Crag are worn, as indeed are many other of the shells of that 

 formation. The specimen now figured belongs to the York Museum, and was 

 found in the Newbournian Crag of Sutton. 



Genus NASSA, Lamarck. 



Sub-genus HINIA {continued from Vol. I, p. 323). 



Nassa (Hinia) assimilis, sp. nov. Plate XLVII, fig. 12. 



Specific Characters. — Shell small, solid, conical ; whorls 7, flattened, slightly 

 angulate above, the last much the largest, three-fourths of the total length ; 



