276 APPENDIX TO THE SUPPLEMENTS TO 



Ventral valve not quite as deep as the dorsal one ; mesial sinus large and wide, with 

 three or four longitudinal ribs, a similar number being also present on each of its lateral 

 lobes ; beak incurved, with a small circular foramen under its angular extremity, mar- 

 gined by narrow deltidial plates. Two specimens measured respectively : 

 Length 8, breadth 10, depth 6 lines. 

 Length 12^, breadth 14, depth 6 lines. 



Obs. — At p. 225 of my 'Jurassic Supplement' I alluded to this species as having 

 been found by Mr. C. Moore in the Middle Lias at Whatley, but from Mr. Moore having 

 mislaid his specimens it was not possible for me either to describe or illustrate the species. 

 Subsequently the Rev. G. F. Whidborne obtained five examples of the same species 

 from the Middle Lias at Husch Quarry, Radstock. Four of them were of about the 

 dimensions of those figured by M. Deslongchamps, and one very much larger but still 

 presenting the same characters. It seems to differ in the number of its ribs, these vary 

 from twelve to fifteen in the specimens I have been able to examine. 



In his description M. E. Deslongchamps says that his fossil approaches much to Bh. 

 variabilis, but differs from it especially on account of the depression of its dorsal valve, 

 and by its larger number of ribs. 



Rhynchonella fallax was found by M. E. Deslongchamps to be abundant in the 

 Middle Lias at May and at Bretteville-sur-Laize (Calvados). 



39. Rhynchonella buteo, Suess, MS. (?). Dav., Appendix to Supplements, Vol. V 



PI. XX, figs. 7, 7 a, b. 



Rhynchonella Buteo, L. Szajoncha. Die Bracliiopodenfauna der Oolithe von Balin 



bei Krakau, Akademie der Wissenschaften, 

 p. 39, pi. vii, figs. 18—20, 1879. 



Shell transversely oval. Dorsal valve convex. Surface ornamented with about six- 

 teen ribs, of which some six form a mesial fold of very small elevation. Ventral valve 

 convex, with a similar number of ribs, and of which five occupy a sinus of moderate 

 depth ; beak incurved. 



Length 7, breadth 9, depth 5 lines. 



Obs. — Mr. S. Buckman has referred to this species some specimens of a lihyncho- 

 nella he had procured from the Inferior Oolite (zone of Am. Sowerbyi) at Bradford 

 Abbas in Dorsetshire. The identification must, however, be considered as provisional as 

 I have not been able to compare our English specimens with Szajoncha's types. 

 Szajoncha described the shell, but Suess gave the name. 



