122 INVERTEBRATA. 



Specimens in the Woodwardian Museum shew the teeth. 

 There are in the right valve one large tooth, V-shaped and 

 massive, by whose sides are two sockets, which are bounded ex- 

 ternally by tooth-like ridges. In the left valve are two diverging 

 teeth, one of them corresponding with the margin of the wide, open 

 lunule. The other is supported on the cardinal shelf. 

 Localities, Upware, Coleshill, Farringdon. 



N. Europe. Elligserbrink, Brunswick (Hildesheim Mu- 

 seum). 

 S. Europe. Hauterive, Mt. Saleve, Landeron. 

 Range. Valengien, Neocomian. 



AsTARTE, sp. nov. 

 (Plate VL, fig. 9.) 



A shell approaching the Astarte Valengiensis of Pictet and 

 Campiche, but more orbicular. 



Also A. Valengiensis is broader on the pallial side, and narrower 

 and more acuminated on the cardinal side than our shell. 



Localities. Upware, Potton, Tealby ? Shanklin. 



Astarte subdentata, Roemer. 

 (Plate VI., fig. 11.) 



Astarte subdentata, Roemer, 1841. Nord. Deutsch. Kreid., p. 71, 

 pi. IX., f. 9. 



Localities. Upware, Potton. 



N. Europe. Hils Thon. (Hildesheim Museum). 



Astarte, sp. 

 (Plate VI., fig. 10. a, 6.) 



A more globose shell than A. subdentata, Roemer ; subtriangular 

 and rounded in contour ; length and breadth nearly equal. It is 

 nearly equilateral, the posterior side being slightly the longer. 

 The umbones are large and prominent. The surface is marked by 

 delicate concentric lines, and also usually by more conspicuous 

 growth-grooves or ridges, but these are not prominent and regular. 



