42 CRETACEOUS LAMELL1BRANCHIA. 



Measurements : 



(i) (2) (3) 



Length 66 . 43 . 30 mm. 



Height 90 . 59 . 41 



(1 3) Upper Greensand, Haldon. 



Affinities. L. rapa is closely related to L. divaricata (p. 44) but the valves 

 are less flattened and the anterior part slopes gradually to the margin ; the outline 

 is more regularly ovate, and the anterior and posterior ribs are much narrower 

 than the others. L. rapa is usually considerably larger than L. divaricata. 



Types. From the Cenomanian of Coudrecieux and Le Mans. 



Remarks. The presence of this species in English deposits appears to have 

 been recognised first by the late Mr. C. J. A. Meyer ; it was recorded by Mr. 

 Jukes-Browne in 1896. 



Distribution. Upper Greensand of Haldon. Cenomanian (Meyer's Bed 10) of 

 Dunscombe. 



LIMA (CTENOIDES) TECTA, Gold/us^, 1836. Plate VII, figs. 2, 3. 



1836. LIMA TECTA, A. Goldfuss. Petref. Germ., vol. ii, p. 91, pi. civ, fig. 7. 



1837. FRONDOSA, F. Dujardin. Mem. Soc. geol. de France, vol. ii, pp. 216, 



227, pi. xvi, fig. 10. 

 1839. LAMELLOSA, H. B. Geinitz. Char. d. Schicht. u. Petref. des siichs. 



Kreidegeb., pt. 1, p. 23. 



1841. TECTA, F. A. Earner. Die Verstein. d. nord-deutsch. Kreidegeb., p. 58. 



1847. A. d'Orbigny, Pal. Fran9. Terr. Oct., vol. iii, p. 547, pi. ccccxix, 



figs. 58. 



1850. H. B. Geinitz. Das Quadersandst. oder Kreidegeb. in Deutsch- 



land, p. 188. 



A. d'Orbigny. Prodr. de Pal., vol. ii, pp. 166, 247. 



?, A. Altli. Geogn.-pal. Beschreib. Uingeb. v. Lemberg 



(Haidinger's Naturwiss. Abhandl., vol. iii, 

 pt. 2), p. 243. 

 ? 1852. ?, E. Kner. Denkschr. d. k. Akad. Wissensch. Math.-nat. 



01., vol. iii, p. 318, pi. xvii, fig. 7. 

 1867. E. Gueranger. Album Paleont. de la Sarthe, p. 19, pi. xxiv, 



fig. 11. 



1869. E. Fame. Moll. Foss. de la Craie de Lemberg, p. 135. 

 1869-70. F. J. Pictet and G. Campiche. Foss. Terr. Oct. Ste. Croix 



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

 pp. 168, 170, 173. 



1871. KADULA (CTENOIDES) TECTA, F. Stoliczka. Palseont. Indica, Cret. Fauna 



S. India, vol. iii, p. 420, 

 pi. xxx, fig. 12. 



