Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 259 form another interesting subject for study^ and have occasionally become a source of error and confusion. Two examples will sufficiently illustrate this. The large and elegant new species of Lima [L. varians) has a surface when young covered with beautifully large waved striae; a good series will show the gradual disappearance of these until a mere remnant is seen on the anterior border ; the figure becomes more gibbose and elongated, and finally is devoid of all markings, except the concentric lines of growth. It is found in the shelly Great Oolite and Fimbria bed of the Inferior Oolite. Macrodon Hirsonensis is another example. Phillips, in his * Geology of Yorkshire,^ gives two shells the name of Cucullma elongata^ one of which, t. 11. f. 43, is our species in its young state, with re-gular longitudinal striai. A broken specimen with striae more irregular, but still in its young state, is the Cucullaa rudis of the ' Mineral Conchology,^ t. 447. Another variety of figure, more advanced in age, is the Area elongata of Goldfuss, t. 123. f. 9. Cucullaa Hirsonensisj Archiac, t. 27. f. 5, is a half-grown spe-cimen with the longitudinal striae obliterated. The genus is de-scribed in Mr. Buckman^s ' Geology of Cheltenham,' but the spe-cies there figured seems to be distinct from the one in question. Our species is abundant in the planking beds, but more rare in the Fimbria and Freestone beds of the Inferior Oolite. To pur-sue the subject further would involve descriptions of individual species useful only in a monograph devoted to the purpose. Here these remarks may fitly conclude with the expression of a hope that the large number of our Great Oolite shells new to science may ere long be given to the public*, and that the fossil fauna of the Cotteswolds generally may by the instrumentality of this Club acquire a " local habitation and a name." Probably no district in England contains an equal number of fossil trea-sures which have not as yet been transferred to the plate of the engraver. XXVII. — 'Notices of British Fungi. By the Rev.M.J.BERKELEYi M.A., F.L.S., and C. E. Broome, Esq. [Continued from vol. xiii. p. 360.] [With a Plate.] *323. Agarieus platyphjllus, P. This species, which was noticed before, occurred on old stumps in Leigh Wood near Bristol, August 1848. The base of the stem was furnished with * Perhaps by means of the PaliEontographical Society. 18*
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