54 CRETACEOUS LAMELLIBRANCHIA. 



more nearly equilateral than in L. granulata; the height is also slightly greater 

 and the umbones rather more prominent ; the ribs appear to be narrower and to 

 have sharper summits. The smaller convexity of L. composita mentioned by 

 d'Orbigny does not seem to be constant. 



Remarks. An examination of the type of Pecten compositus, Sowerby, shows 

 that it is an example of this species (see Vol. I, p. 188, footnote), and con- 

 sequently the specific name composita must take the place of cenomanensis. 



The French examples which I have seen are, on the average, larger than the 

 English. 



Types. The type of L. cenomanensis came from the Cenomanian of Le Mans. 

 The type of Pecten compositus is in the Bristol Museum; it is labelled 

 " Blackdown " but is not siliceous and is more probably from Warminster. 



Distribution. Upper Greensand (zone of Pecten asper) of Warminster. Rye 

 Hill Sand of Maiden Bradley. I have not seen the specimens recorded in the 

 Memoirs of the Geological Survey from the zones of Schloenbachia varians and 

 Holaster subglobosus of Hunstanton. 



LIMA (LIMEA ?) GKANULATA (Nilsson), 1827. Plate VII, figs. 27a c, 28, 29a, I. 



1827. PLAGIOSTOMA GRANULATUM, S. Nilsson. Petrif. Suecaua, p. 26, pi. 



fig. 4. 



1833. GRANULOSUM, S. Woodward. Geol. Norfolk, pp. 48, 51, 



pi. v, fig. 26. 



1836. LIMA GRANULATA, A. Goldfuss. Petref. Germ., vol. ii, p. 89, pi. ciii, fig. 5. 



1837. PLAGIOSTOMA GRANULATUM, W. Hisinger. Lethsea Suecica, p. 54 (not the 



figure, pi. xv, fig. 7). 



1841. LIMA MURICATA, F. A. Earner. Die Verstein. d. nord-deutsch. Kreidegeb., 



p. 55. 



1842. GRANULATA, F. v. Hagenow. Neues Jahrb. fur Min., etc., p. 555. 



1846. A. E. Reuss. Die Verstein. der bohm. Kreideformat., 



pt. 2, p. 32, pi. xxxviii, fig. 21. 



1847. A. d'Orbigny. Pal. Franc. Terr. Cret., vol. iii, p. 570, 



pi. ccccxxvii, figs. 59. (Named 

 L. granosa on plate.) 



1850. d'Orbigny. Prodr. de Pal., vol. ii, p. 248. 



1851. PSEUDOCARDIUM, INFLATA ET DENTATA, J. Milller. Petref . der Aachen. 



Kreidef., pt. 2, pp. 67, 68. 



1855. GRANULATA, G. Cotteau. Moll. Foss. de 1'Yonne, p. 102. 



1870. C. Schliiter. Neues Jahrb. fur Min., etc., p. 950. 



F. J. Pictet and G. Campiche. Foss. Terr. Oct. Ste. 



Croix (Mater. Pal. Suisse, 

 ser. 5), p. 170. 



