L74 



CRETACEOUS LAMELLIBRANCHIA. 



? 1868. Tellina in-ecjualis, A. Briart and F. L. Cornet. Meule de Bracquegnies 



(Mem. cour. et Mem. des Sav. 

 ttrangers, vol. xxxiv), p. 77, pi. 

 viii, figs. 24, 25. 

 1870. AiicorAGiA — (Linearia), F. Stoliczka. Pal*ont. Indica, Cret. 



Fauna S. India, vol. 

 iii, p. 124. 

 Non 1845. Tellina ?, E. Forbes. Quart. Journ. G-eol. Soc, vol. i, p. 239. 



Description. — Shell oval, moderately inequilateral ; length rather more than 

 1-| times the height; left valve less convex than the right. Anterior part of 

 valves rounded. Posterior margin convex, subtruncate, more or less oblique, 

 forming a blunt angle with the ventral margin. A slight carina extends from the 

 umbo to the postero-ventral angle and cuts off a flattened postero-dorsal area. 

 Umbones moderately prominent. Pallial sinus large, rounded. Postero-dorsal 

 area ornamented with small radial ribs; the remainder of the shell smooth 

 except for growth-lines. 



Measurements : 

















(i) 



(2) 



(3) 



(4) 



(5) 



(6) 



Length 



29 . 



28 . 



27 



. 2(3 . 



23-5 



18 nun. 



Height 



18-5 . 



18 . 



17 



. 1(3-5 . 



14-5 



11 „ 



Thickness . 



9 . 



7-5. 



8 



. 725. 



6-5 



J5 



(1—6) Blackdown. 



Affinities. — T. strigata Goldfuss, 1 from the Aachen Greensand, is similar in 

 form to T. inasqualis, but possesses fine radial ornamentation over the entire surface 

 of the shell. T. Uoyana, d'Orbigny, 2 is also similar in form, but appears to be more 

 nearly equilateral and without radial ribs. 



A species of Tellina found in the Meule de Bracquegnies was referred to 

 '/'. inasqualis by Briart and Cornet, but it appears to differ in some respects from 

 the latter. The specimens which I have seen from Bracquegnies are not 

 sufficiently well preserved to enable me to express a definite opinion as to their 

 relationship to T. inasqualis. 



Type. — From the Upper Greensand of Blackdown ; in the British Museum. 



Distribution. — Upper Greensand (zone of Schlcenbachia rosh*ata) of Blackdown 

 and Haldon. Recorded by Jukes-Browne from the Upper Greensand of Devizes 

 and the Isle of Wight. 



1 ' Petrel Germ.,' vol. ii (1840), p. 234, pi. cxlvii, fig. 18. Holzapfel, 'Die Mollusk. Aachen. 

 Kreide ' (Palaeontographica, vol. xxxv, 1889), p. 159, pi. xi, figs. 6-10. This species is the type of the 

 sub-genus or section Palxmcera, Stoliczka, 1870. 



2 'Pal. Franc. Terr. Cret.,' vol. iii (1845), p. 422, pi. ccclxxx, figs. 9-11. 



