easwements •■ 







(i) 



Length 



38 



Height 



34 



(4) 



(5) 



28 



24 mm. 



26 



22-5 „ 



is | CRETACEOUS LAMELLIBRANCHIA. 



and the two posterior slope obliquely backwards. In the left valve a long, oblique 

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

 anterior cardinal, diverge under the umbo, 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. 



(2) (3) 



32 . 31 



29-5 . 29 



(1 — 5) Crackers, Atherfield. 



Affinities. — This species shows some resemblance to Venus vendoperana 

 (Leymerie), especially to the example figured by Pictet and Renevier, 1 but the 

 umbones are less prominent and the lunule is less distinct. 



Type. — The type came from the Crackers of Atherfield, but cannot now be 

 found. 



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

 the Atherfield Clay and Bed vii of Atherfield by Fitton. Recorded by Topley 

 from the Atherfield Beds of Peasmarsh and Shalford. 2 



Cyprimeuia (Cycilortsma) parva {Sowerby), 1820. Plate XXVIII, figs. 19 — 23; 



Plate XXIX, figs. 1—3. 



1826. Venus parva, J. de C. Sowerby. Min. Conch., vol. vi, p. 32, pi. dxviii, 



figs. 4 — 6. 

 1845. Lucina ? solidula, E. Forbes. Quart. Journ. Geol. Soc, vol. i, |>. 239, pi. ii, 



fig. 7. 

 1850. Venus parva, A . d'Orbigny. Prodr. de Pal., vol. ii, p. 159 (not Blackdown). 



Lucina solidula, d'Orbigny. Ibid., vol. ii, p. 118. 

 1854. Cytherea parva, J. Morris. Cat. Brit. Foss., e<l. 2, p. 201 (partim). 



Lucina solidula, Morris Ibid., cd. 2, p. 208. 

 1865. Venus parva, F. J. Pictet mid G. Campiche. Foss. Terr. Cret, Sto. Croix 



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

 1870. — F. Stoliczka. Palajont. Indica, Cret. Fauna S. India, vol. iii, 



p. 160 (Caryatis). 

 Lucina? solidula (? Mysia), Stoliczka. Ibid., vol. iii, pp. 252, 262. 

 ? 1895. Venus cf. parva, E. Tiessen. Zeitschr. d. deutsch. geol. Cesellsch., vol. xlvii, 



p. 484. 



1 Pictet and Renevier, 'Foss. Terr. Aptien ' (' Mater. Pal. Suisse,' ser. 1, 1855-56), p. 71, pi. vii, 

 fig 9. Pictet and Campiche, ' Terr. Cret. Ste. Croix' (' Mater. Pal. Suisse,' ser. 4, 1865), p. 181, pi. exi, 

 fig. 12. 



- T have not seen the specimen recorded by Keeping from Upware. 



