298 Rev. G. F. Whidborne on the Geological 



only by a local swelling ; and the posterior lobe alone remains 

 as an important eminence, with an indefinite swelling behind 

 it. In shape this valve is not so long as fig. 10, and is not 

 so semicircular as figs. 1, 2, 6, and 7. 



EXPLANATION OF PLATE XI. 



[The figures are magnified 20 diameters.] 



Fiff. 1. Eyamodes Whidhornei, gen. et ep. nov. Carapace ; right valve 

 shown, vpith the edge of the other valve. 



Fig. 2. The same. Left valve seen. 



Fig. 8. The same. Posterior aspect. 



Fig, 4. The same. Ventral aspect. 



Fig. 5. The same. Dorsal aspect. 



Fig. 6. The same. Interior of a left valve. 



Fig. 7. The same. Interior of another left valve. 



Fig. 8. Kyamodes Whidhornei, var. elliptica, nov. Small individual j 

 right valve. 



Fig. 9. Kyamodes Whidhornei, var. obsolescens, nov. Right valve. 



Fig. 10. Kyamodes Whidhornei, var. elliptica, nov. Left valve, a, out- 

 side J b, outline of edge view. 



II. Note on the Geological Position of the Specimens. 

 By the Rev. G. F. Whidborne, M.A., F.G.S. 



In order to define the position of the beds in which the 

 Devonian Ostracoda here described by Professor Rupert 

 Jones occur, it will be necessary to go somewhat into detail. 



The cliffs of Meadfoot Bay consist of a mass of shales, 

 surmounted on the east side by the Flem-odict^/um-heda under 

 Kilmorie and on the west by the mass of limestone which 

 forms the plateau of Daddy-Hole Plain. The latter lime- 

 stone has been shown by the late Mr. Champernowne * to be 

 much folded and doubled on itself, and its beds are truncated 

 parallel to the general shore-line by a great open fault which 

 is filled in with Triassic Conglomerate, and which has evi- 

 dently been subjected to subsequent movement, as even 

 quartz-pebbles contained in it have their surfaces levelled and 

 striated. 



The western arm of Meadfoot Bay terminates in a sharp 

 crag, cut off from the main mass by this fault, and curiously 

 like the little island a few hundred feet beyond it called tlie 

 " Shag,'"" which is evidently a continuation of the same bed 

 thrown eastward by a second fault. Between this crag and 

 the main promontory of Daddy-Hole Plain come in order two 



* Trans. Devonshire Assoc. &c. vol. vi. 1874, p. 548. 



