140 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 17, 



SENONIAN. 

 Mollusc a. Brachiopoda. 



49. Crania spinulosa, Nilsson. PI. VIII. f. 7 a-h. 



Some confusion having arisen respecting this species, and, as it has 

 not been hitherto well illustrated, it has been thought advisable to 

 refigure it from the beautiful specimens collected by Captain Cock- 

 burn, which have enabled us to give enlarged representations of both 

 valves of this fine Brachiopod. 



On submitting specimens to Mr. Thomas Davidson, he referred it 

 to the Crania spinulosa, Nilsson, t. 3. f. 9 a-e, with the following 

 remarks : — " It is different from the one so named by Goldfuss, 

 which is the Crania Hagenovii of De Koninck. It agrees with 

 Nilsson' s figure in being of the same size, and externally covered 

 with short tubercular asperities or spines ; and the interiors of both 

 dorsal and ventral valves agree with the Swedish author's illustra- 

 tions. This species is less circular than Nummulus Brattenburgensis 

 (= C. nummulus), it has also a small flattened false area in the attached 

 valve ; neither are there in any of the figures of that species given 

 by Nilsson, Goldfuss, or Hceninghaus any of those tubercular spines 

 depicted which may be observed in the specimens from Inkerman 

 and in the drawing of C. spinulosa in Nilsson' s work ; on the con- 

 trary, the valves of C. nummulus are represented smooth. 



Du Bois de Montpereux, in his ' Tableau des fossiles de la Craie 

 en Crimee,' at subdivision No. 8, ' Craie marneuse blanche,' cata- 

 logues Crania nummulus associated with Ostrea vesicularis, and this 

 Mr. Davidson agrees with me in thinking to be most probably iden- 

 tical with our species. 



Capt. Cockburn collected as many as thirty-eight specimens of the 

 valves of this Crania (of which twenty-nine were lower or ventral 

 valves, and but nine dorsal or upper valves) from the coarse white 

 chalk of Inkerman associated (like the Crania mentioned by Dubois) 

 with Ostrea vesicularis and other species. 



Lamellibranchiata. Asiphonida. 



50. Ostrea carinata, Lamarck; D'Orb. Ter. Cret. pi. 474. 

 Loc. Tillage of Badrax. Upper Greensand. 



51. Ostrea vesicularis, Lamarck; D'Orb. Ter. Cret. pi. 486. 

 f. 1, 2. 



Loc. Village of Badrax. A mass from the Upper Greensand; two 

 specimens from Lower Chalk ; presented by the Imperial School of 

 Mines, St. Petersburg. Seven specimens from Upper Chalk ; In- 

 kerman. 



52. Ostrea frons, Parkinson. — O. diluviana, D'Orb. Ter. Cret. 

 pi. 483. 



Loc. Badrax. Upper Greensand. 



Presented by the Imperial School of Mines, St. Petersburg. 



53. Ostrea flabellata, D'Orb. pi. 475. 



