494 REV. 0. E. WHIDBORNE ON SOME EOSSILS 



Three specimens in the Bristol Museum and one in my collection 

 from Dundry. 



Mr. Tawney considered this form to be new ; and I am aware 

 of no described species that approaches it. In shape and style 

 it mimics Trigonia costata, Park., in a curiously striking way. 



Gtetphjea ctgnoides, n. sp. Plate XV. figs. 8, 8 a. 



Shell narrow, subtriangular, much inflated. Umbo very promi- 

 nent and elongated, narrow and much incurved, arching regularly 

 round, with the point inclining and facing backwards ; covered with 

 ten or twelve coarse irregular rounded rays or frills over the re- 

 curved portion, which are about half an inch long, and vanish 

 rather suddenly, leaving the rest of the shell smooth, except for 

 fifteen or twenty very irregular and well-developed growth-edges at 

 nearly equal distances over the rest of the shell. Surface divided 

 into two very unequal lobes by a very strong sulcus, which reaches 

 the umbo. Posterior lobe very convex, narrow, and only slightly 

 increasing in width downwards. 



Length 3 inches, breadth 2 inches. 



Locality. Broadwindsor. One specimen in the British Museum 

 and one in my collection. 



The left valve is just like that of G. incurva (Sow.), to which the 

 present shell bears much resemblance, except that the umbo is nar- 

 rower and more highly arched, and that the greatest length is much 

 nearer the inferior margin, which is much straighter and less convex 

 than in G. incurva. 



G. calceola, Quenst. Jura, t. 48. fig. 1, is very similar, but differs 

 by having no plaits on the apex, and by the umbo being even more 

 arched and enlarged. It may, however, be possibly only a variety 

 of this shell. 



Gryphjea cymbium, Lam. 



1819. Gryplicea cymbium, Lam. Anim. s. Yert. vol. vi. p. 198. 

 1834. G. cymbium, Goldf. Petr. Germ. t. 85. fig. 1. 

 1849. G. cymbium, D'Orb. Prodr. vol. i. p. 238. 



1852. G. cymbium, Buv. Stat. Geol. de la Meuse, t. 5. figs. 5, 6, 7. 



1853. G. cymbium, Chap. & Dew. Poss. Lux. pt. 1. 1. 33, fig. 1, and 

 t. 34. fig. 1. 



1854. G. cymbium, Morris, Cat. Brit. Poss. p. 168. 



1854. G. cymbium, Brown, Poss. Conch, t. 61, figs. 22, 23. 



There is a fine specimen of this Middle Lias form from the Hum- 

 phriesianus-zouQ of Dundry in the Bristol Museum. It is an elon- 

 gate, pear-shaped, convex, left valve, with an indistinct sulcus 

 forming an unprojecting wing, and a large curved umbo bending 

 backward. It comes exactly between two ordinary Middle Lias 

 specimens in the same museum. 



It was identified by Mr. Tawney, who has added a note to it, 

 " Certainly from Dnndry, as labelled," in which assertion, after ex- 

 amining the matrix, I believe him to be right. 



It is possible to imagine it a remanie shell from the Lias, as the 



