246 CRETACEOUS J.AMELLTBRAXCHIA. 



18o5. Pholadomya Cornueliana, F. J. Pirtet and E. Renevier. Foss. Terr. Ajitieu 



(Mati'r. Pill. Suisse, ser. 1), p. 59, pi. vi, fi>;. 6. 

 1865. — — F.J.PictetandG.Campiche. Foss. Terr. Grot. 



Ste. Croix (Mater. Pal. Suisse, ser. 4), p. 87. 

 — — — H. Coquaiul. Aptien de I'Espague, p. 93. 



1870. — — F. Sloliczka. Palsont. ludica, Cret. Fauua S. 



Imlia, vol. iii, p. 75. 

 1875. — — G.Moesch. Mou. PliolacIom_ven,p. 96, pi. x.xxiii, 



fig. 8 (ypl. xxxvi, fig. 4). 



iJi'scriptioi). — Shell .small, .sliurt, oval, inflated, conijiressed posteriorly, 

 moderately ine([uilateral with a small gape at the posterior end. Margins rounded. 

 Umbones prumiiient, incurved. 



Ornamentation consists of strong, ronndcd, radial I'ibs. The grooves between 



the i'il)s are shallow, and broader than the ribs. Concentric riljs cross the grooves 



and ribs, giving to the latter a granulate or tuberculate api)ea)'ance. Near tlie 



posterior and anterior mai-gins radial ribs are absent. 



Mc(t!inri')iU'iifs : 



0) (2) 



Length . . 20 . . 1:1 mm. 



Height . . 10 . K) „ 



(1, 2) Atherfieia. 

 Ajji iiitii'K. — This species reseml)les P. Saurtl-SdJix (Rdmer)' from Texas and 

 /'. ]'iij)tP!<i, Lartet,'- from I'alestine, Syria, and Zululand, and 1'. siilxliiuni.'^i.i 

 (d'Orl)igny),'^ from the ( 'enomanian of Le Mans. 



7'///>e. — From the Aptian of Was.sy (Hante-Marne). 



Dtstribtttloii. — jjower (Jreensand (Crackers) of Atliertield. Recorded by Topiey 

 from the Atherfield Beds of Peasemar.sli and Shalford. 



i'lKH.AiioMVA (MCAxri-A {S<Hr>'rhi/), IS'Ml i'late XL, tig. 11; Plate XLl, fig. 1. 



1708. C. N. LatKj, Hist, lapidum tiguratonmi, p. 146, pi. xliv, tig. 1. 

 1718. J. J. Scheuchzer, Helvetiae hist, uat., pt. 3, p. 307, fig. 113. 

 1742. L. Bourguet, Traitc des Petrific, pi. xxiv, fig. 145. 



1 • Kri'idfliilil. V. Texas' (1852), p. 48, pi. vi, fig. 7. F. CormifJiana has heeu compared with 

 Corbiihi wquivalvU, Cxoldfuss, by Pictet and Reuevier, Pictet and Campit-he, and Moesoh, but HolzaptVl 

 has shown that Goldfuss' species belongs to the genus LiopiMa. Holzapi'el, ' Die MoUusk. Aicheu. 

 Kreide ' (' Palseontographica,' vol. xxxv, 1889), p. 150, pi. ix, figs. 4 — 6; Miiller, ' Mollusk. d. Untersenon 

 v. Braunschweig u. Ilsede ' (1898), p. 76, pi. x, fig. 9. 



- 'Explor. gcol. de la Mer Morte ' (1877), p. 126, pi. xi, fig. 9; BlancUenhorn, ■ Beitr. z. Geol. 

 Syriens' (1890), p. 94, pi. v, figs. 14—17; Kossmat, ' Deukschr. d. k. Akad. Wiss., Wien,' vol. Ixxi 

 (1902), p. 55, pi. iv, fig. 9 ; Newton, ■ Trans. Roy. Soc. S. Africa,' vol. i ( 1909), p 79, pi. vi, figs. 3—6. 



•' ' Pal. Franc. Terr. Cret.,' vol. iii (1844), p. 38, pi. eel. figs. 1—3. An internal east resembling 

 P. t^iiliiliiieiisiK has been found by Mr. J. Scaues in the C'hloritic Marl of Maiden Bradley. 



