528 EEV. G. F. WHIDBOENE ON SOME POSSILS 



have never found it myself. A. cordiformis, Desh., seems to hjs a 

 common form at Des Moutiers and Bayeux, many specimens from 

 those localities being in the British Museum. 



ASTAETE TTNGTJLATA, Phil., sp. 



Astarte lurida, Phill. Geol. York. vol. i. t. 5. fig. 2 (non Sow.). 



A. ungulata, Lycett, Supp. Gt. Ool. Moll. t. 35. fig. 20. 



This shell is fully described in the Palseontographical Society's 

 Monograph as an Oxfordian and Cornbrash fossil. In the Bath 

 Museum there is a specimen from the Inferior Oolite of Dinnington, 

 Somerset ; and I have obtained it from the ParMnsoni-zone of Burton 

 Bradstock. 



Gouldia? ovalis, Quenst., sp. Plate XVIII. figs. 17, 17 a. 



1852. Cardita ovalis, Qnenst. Handb. t. 56. fig. 22. 



1852. ? C. problematical Buv. Stat. Geol. de la Meuse, t. 15. figs. 

 18-23. 



1858. G. ovalis, Quenst. Jura, t. 93. fig. 33. 



1871. Oorbis oviformis, Terq. & Jour. Mem. Soc. Geol. Fr. ser. 2, 

 vol. ix. t, 10. figs. 30-33. 



Shell convex but flattened, small, massive, and obliquely trans- 

 verse. Umbo small, acute, proximate, anterior and facing forward. 

 Lunule indistinct. Ligament external. Teeth 2, 1 ; lateral 1-1, 1-1. 

 Pallial line entire. Muscle-marks at the extremities of the long 

 hinge-line, raised, but concave. Edges crenulated within. Margins : 

 anterior convex, inferior nearly straight, posterior convex below and 

 oblique above. Surface flattened on the back, but in the full-grown 

 shell nearly perpendicular near the borders, covered with very fine 

 transverse striae and a few indistinct growth-lines. Shell- structure 

 thickest near the inferior margin. 



Dimensions. Length 5 lines, width 6| lines, depth of one valve 4 

 lines. 



There are two specimens in the Bristol Museum from Bradford 

 Abbas, and I have obtained many from the Humjphriesianus-zone of 

 the same locality. 



The figure in Quenstedt's ' Handbuch ' agrees exactly with the 

 British shell ; but in that in his * Jura ' the hinge is incorrectly given, 

 which might easily have arisen from the fossil from which it was 

 drawn having been clogged with matrix. Buvignier's G. proble- 

 matica may belong to this species, though its ornamentation is much 

 coarser ; but G. Moreana of the same author is a slighter and wider 

 shell, and differs in the character of its hinge. Astarte rhombea, 

 F. Bom. de Ast. Gen. t. 1. fig. 3, has a smaller anterior side, and is 

 less thickened at the margins. 



GOTJLDIA? MITRALIS, n. Sp. PI. XVIII. figS. 18, 18 «. 



Shell small, oblique, very transverse. Umbo anterior, acute, 

 small, curved forward. Hinge long, with two very divergent central 



