8 MOLLUSCA FROM THE GREAT OOLITE. 



Belemnites eusiformis, Park. Plate I, figs. 6, 8. 



Belemnites fusiformis, Park. Org. Rem. iii, p. 127, t. 8, f. 13, 1811. 



— — Miller. Geol. Trans., 2d Series, ii, p. 61, t. 8, f. 22, t. 9, 



figs. 5, 7. 



— — Brown. Illust. Foss. Conch., p. 41, t. 29, f. 14. 



— — Flem. Brit. Anim., p. 240. 



— Fleuriausus, D'Orb. Pal. Franc. Terr. Jur., p. 11, t. 13, figs. 14-18. 



— — Buckman. Geol. of Chelt., t. 3, f. 9. 



B. Testa elongatd, gracili, antice compressd, attenuatd, postice depressd, acutissimd 

 subtus longitudinaliter sulcata, sulco postice, anticeque non interrupto ; aperturd compressd. 

 (D'Orb.) 



An elongated, smooth, somewhat fusiform Belemnite, somewhat compressed anteriorly 

 and depressed posteriorly, terminating in a rather sharp point ; marked throughout the 

 whole length by a deep single uninterrupted furrow, slightly enlarged towards the point of 

 the rostrum. Alveolar cavity occupying about a fourth of the length. There is some 

 slight confusion respecting this species, which is undoubtedly the shell alluded to by 

 Parkinson in the work above cited, and described by Miller as coming from the Stonesfield 

 slate, near Woodstock. The specimens figured (PI. I, figs. 6 — 8), are from that locality. It 

 appears also to be identical with the B. Fleuriausus, D'Orb., which is found in the Great 

 Oolite in the environs of Lucon (Vendee). We are further confirmed in this opinion by the 

 fact that Professor Buckman has identified and figured, in the work above referred to, a 

 Belemnite under the name of B. Fleuriausus, as occurring in the Stonesfield slate of Glou- 

 cestershire, which is identical with our shell from the same deposit in Oxfordshire, the 

 latter being the original locality from which the species was first obtained. The con- 

 fusion appears to have arisen from the English specimens having been confounded with the 

 B. hastatus, Blainville (Hibolithes, Montfort), from the Oxford clay, at least it is so quoted 

 by M. D'Orbigny ('Pal. Franc. Terr. Jur.' p. 121), and also by Bronn ('Index Palaeon- 

 tolog.,' p. 156), an opinion that Mr. Miller may possibly have induced, inasmuch as he also 

 considered De Montfort's species to be synonymous with the B. fusiformis. 



Locality. The Stonesfield slate of Stonesfield ; and Eyeford near Cheltenham. 



Belemnites Bessinus, D'Orb. Plate I, figs. 5, 7. 



Belemnites Bessinus, D'Orb. Pal. Franc. Terr. Jur., p. Ill, t. 13, f. 14-18. 

 — canaliculars, Buckman. Geol. of Chelt, p. 71, t. 3, fig. 8. 



B. Testa elongatd, antice compressd, postice depressd, subtus longitudinaliter sulcata, 

 sulco postice interrupto, aperturd compressd. (D'Orb.) 



An elongated, smooth, very slightly fusiform shell anteriorly compressed, posteriorly 

 depressed, marked throughout the whole length by a furrow which is wider, and slightly 

 divided towards the point. 





