184 CRETArEOUS LAMELLIBRANCHIA. 



and the two posterior slope oblicpielv backwards. In the left valve a long, oblitpie 

 laminar, posterior cardinal; a median cardinal (which is divided); and an 

 anterior cai'dinal, diverge nnder th(> ninbo, from which they are separated by a 

 narrow space or channel. In front of the anterior cardinal the anterior part of 

 the hinge-plate is concave. 

 Alcd.mrcments : 



(1) (2) (3) (4) (5) 



Length . 38 . 32 . 31 . 28 . 24 mm. 

 Height . 34 . 20-5 . 20 . 2G . 22-5 „ 



(1—5) Crackers, Atherfield. 



Afjiidtirii. — This species shows some resemblance to Vcnvs rriidoppraiia 

 (Leymerie), especially to the example figured by Pictet and Renevier,' but the 

 umbones are less prominent and the lunide is less distinct. 



l^ypc. — The type came from the Crackers of Atherfield, ])nt cannot now he 

 found. 



Distriliiifion. — Lower Greensand (Crackers) of Atherfield. Recorded from 

 the Atherfield Clay and Bed vii of Atherfield by Fitton. Recoi-ded by Topley 

 from the Atherfield Beds of Peasmarsh and Shalford.- 



Cvn;iMi.;i;]A (Cvclokism \) pakva {Sowrrh,/), 182(;. Plate XXVIII, figs. 19—23; 



Plate XXIX, figs. 1—3. 



1826. Venus parva, J. de C. Sowerhy. Miu. Concli., vol. vi, p. 32, ]il. dxviii, 



1845. LuciNA > soLiDULA, E. Forbes. Quart. Joiiru. Gi'ol. Soc, vol. >, ].. 239, pi. ii, 



fife'. 7. 

 1850. Venus parva, A. d'Orhiijinj. Prodr. dePal., vol. ii, p. 159 (not Blackdown). 



— Llcina soi.idui.a, iVOrJiiijinj. Iliid., vol. ii, p. 118. 



1854. Cythkrea parva, ./. Murris. Cat. Bnt Foss., e^i. 2, p. 2(il ( purfim). 



— LuciNA 80I.IDULA, MoriiK Il)id., (d. 2, p. 208. 



1865. Venus parva, F. J. Pictet ami G. Campiche. Foss. Terr. Crcl, Ste. Croix 



(Mater. Pal. Suisse, ser. 4), p. 188. 

 1870. — — F.StoUczka. PalfDont. ludiea, Cret. Fauna S. India, vol. iii, 



p. 16U {Ccrryalis). 



— LuciNA? solidula (PMysia), Stoliczka. Ibid., vol. iii, pp. 252, 262. 



? 1895. Venus rf. pakva, E. TieKseu. Zeitsebr. d. deutsch. geol. Gresellsch., vol. xlvii, 



p. 484. 



1 Pict«t and Kencvier. ' Foss. Terr. Aptieu' (' Mati'r. Pal. Suisse,' ser. 1, 1855-56), p. 71, pi. vii, 

 % 9. Pictet :ind Canipiclie, 'Terr. Crct. Ste. Croix' ("Mat^r. Pal. Suisse,' ser. 4, 1865), p. l«l.pl.cxi, 

 fi- 12. 



~ r liave not seen the specimen recorded l)\- Kei'pin>,' tiiim Upware. 



