Among the fossil sharks secured by Prof. Newberry, now in the possession of Columbia College, the writer finds an undescribed specimen which proves of considerable interest. It appears to have been collected by Rev. Dr. Kepler, near Linton, Ohio, about 1890, and when received together with other and better material was regarded by Dr. Newberry as an immature specimen of LL Cladodus" (Cladoselache*) f y l e r i . It is lacking in counterpart. The fossil presents for examination the following

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... s : Visceral (1) aspect from near the tip of snout to hinder region of trunk (cf. in accompanying Fig. 111.) ; a well preserved pectoral fin, muscle plates, the basal cartilages of a ventral fin, and in visceral region a well marked coprolite. The specimen measures in its widest part three, and in axial length thirteen inches. The length of the pectoral fin is two inches, its breadth one and onehalf. This fin, accordingly, is but about one-third (in linear measurement) the size of the pectoral of Cladoselache f y l e r i , but differing but slightly in its structures, the fossil might readily be assigned to this species. General proportions of the body, prove, however, to be widely unlike those of f y l e r i , and these together with the minor differences in fin structure might reasonably be taken as characteristic of a new species. The specific name the writer would dedicate to Dr. Newberry as the first describer of Cladodonts. Cf. in current number of American Journal of MO holo y the charaotera of thlp genus. aa dlscussed by the writer, also, Trans. 3. Y. &ad. of Soi. Pol. XII.. p. 121,1893.