LIMA. 5 



Bemarfcs. — I have seen one example only ; it consists of both valves, but wit li 

 the posterior margin imperfect. 



Type. — In the Museum of the Ventnor Institute. 



Distribution. — Upper G-reensand, chert beds (/.one of Pecten asper) of the Isle 

 of Wight, 



Lima subovalis, Sowerby, 1836. Plate II, figs. 3, 4a, b, 5a, //, Go, l>, 7 «, b. 



1836. Lima ? subovalis, J. de C. Sowerby. Trans. G-eol. Soc., ser. 2, vol. iv, 



pp. 359, 342, pi. xvii, fig. 21. 

 1839. aspera, H. B. Geinifz. Char. d. Schiclit. u. Petref. des sachs. 



Kreidegeb., pt. 1, p. 23 (partim). 

 r 1847. subovalis, A. d'Archiac. Mem. Soc. geol. de France, ser. 2, vol. ii, 



p. 309. 

 ornata, A. d'Orbigny. Pal. Franc. Terr. Oct., vol. iii, p. 551, 

 pi. ccccxxi, figs. 6 — 10. 

 1850. Prodr. de Pal., vol. ii, p. 107. 



H. B. Geinitz. Das Quadersandst. oder Kreidegeb. in 

 Deutscliland, p. 192. 

 1867. E. Gner anger. Album Pak'ont. de la Sarthe, p. 19. 



pi. xxiv, figs. 7, 12. 



1869. — subovalis, F. J. Pictet and G. Campiche. Foss. Terr. Cret. Ste. 



Croix (Mater. Pal. Suisse, ser. 5), 

 p. 168. 



1870. — ornata, Pictet and Campiche. Ibid., pp. 169, 173. 



1871. Radula (Acesta) ornata, F. Stoliczka. Palaeont. Indica, Cret. Fauna S. 



India, vol. iii, p. 414. 



1872. Lima ornata, H. B. Geinitz. Das Elbtlialgeb. in Sachsen (Pakeontogra- 



pliica, vol. xx, pt. 1), p. 205, pi. xlii, 

 figs. 16, 17. 

 ? 1877. — A. Perov. Bull. Soc. geol. de France, ser. 3, vol. v, p. 502. 



1877. Rauliniana, A. J. Juices-Browne. Quart. Journ. G-eol. Soc, vol. 



xxxiii, p. 502, pi. xxi, fig. 2. 

 1893. ornata, R. Michael. Zeitschr. d. deutscli. geol. Gesellsch., vol. xlv. 



p. 234. 



Non 1852. — A. Buvignier. Statist, geol., etc., de la Meuse, Atlas, p. 23, 



pi. xviii, figs. 17 — 19. 



Description. — Shell compressed, ovate or subtrigonal, oblique, considerably 

 higher than long, with the ventral and posterior margins rounded. Apical angle 

 about 74°. Umbones small, close together. Anterior area rather small, depressed, 

 limited by a ridge, ornamented with ribs separated by broader grooves. 



Ornamentation consists of numerous (05 to 70) fairly strong, rounded ribs of 



