2(32 CRETACEOUS LA.M KLIJIJUAXCll I A. 



i'W7»////-l'EllNIi).E, Zlnd. 



(Coiithiiied frniii pngf 05.) 



(li'lillS — IxoCKItAMI'S, J. Snirrrlii/,^ ISIO. 



(J. Piirkiasou [ex Sowerbj MS. J, 'Traus. Gruol. Sac.,' sor. 1, vol. v, 1819, p. 55. J. Sowurby, 

 'Traus. Liuu. Soc.,' vol. xiii, 1822, p. 455.) 



Inocebamiis NHoOD.MiK.Nfsis, iV Orhhjii ij , 1 8 iij. Pliite XIjV, fig.s. 1, 2. 



18-10. iNociiR.VMus NEoco.MiENSis, A. d' Orbi'jiii/. Pal. Fram;. Torr. Ci\''t., vol. ili, 



p. 50;3, pi. cccciii, figs. 1, 2. 

 1850. — — ,rOrl,:,i,n/. Vi-odr. de Pal., vol. ii, p. 83. 



1854. — — J. Morris. C.it. Brit. Foss., eil. 2, p. 170. 



1855. — — G. Collect II. Moll. Fos-i. de ITouue, p. 107. 

 1869. — — F.J.FidetaiulG.aunpiche. Foss. Terr. C ret. 



Ste. Croix (Mat.'r. Pal. 



Suisse, ser. 5), p. 104. 



1900. — — A. Wollem-.mn. Die Bivalv. u. Gastrop. d. 



deutscli. u. holljiud. 

 Neocoms, p. (50. 

 ? 1905. — E. llu-hurt. Die Fauna d. SL-liauniliui-ix- 



Lippe'scheu Kreidemulde, 

 p. 44, pi. ix, fiLjs. 4-6. 



Descrij.itluii. — Shell iueciuivalve, vei-y iiit'quiliiteral, a little liiu'lier than long. 

 Valves convex, with flattened sides, and the postevior part uoiupre.'^.sed. Anterioi' 

 margin iicnrly straiglit ; posterior and ventral margins rounded. Posterior 

 margin Cdi'iiiing nii obtuse angle with the hinge-line. Anterior part nearly 

 peri)enilicul;n' to the plane of the valves and excavateil near tlie nndjones. 

 Und)ones terminal, eurved inwards and Forwards. Uinge-line eipial to mure tlian 

 Indf the height of tlie sliell, and nia]<ing an angle of ahoiit l(H»' willi the anterior 

 margin. 



Ornam'ntation con.sists of narrow, regular, coneenti'ie rilis witli an lui.sym- 

 metrical eiirvature; the interspaces are I)road and regularly concave. 



' In roarran^'injj llic lullcrtiou of Iimeenuiii in tiir IJrilisli Muscuni, Mr. K. B. Newton and Mr. 

 C. D. Sherboru have found several tvpe-speeinieus, (he existence of which liiid not been prcviuuslv 

 reeo<rnised; this discovery has great Ij facilitated my work. I am also imlel)ted to Mr. Newt(Ui and 

 Mr. Sherborn for assistance in selectiny specimens for fi^'uring. I wish to thanl; Jlr. 0. 1'. Chat win 

 for infoniiatiiin respecting 1 lie zonal distribution of the sjioeies of Iiinrerniiiii.-< in (he Chalk and for 

 other assistance Dr. Blackniore, Dr. Rowe, and Mr. G. E. Dildey have helped by the loan of 

 numerous specimens from their collections. 



