Descr/ptiotis of New Genera and Species of Foss-ils. 1'.) 



The large columas of this species arc quite iibiuulant in the lower 

 twenty-five feet of the Utica shale, as it is exposed on the banks of the 

 Ohio River at Cincinnati. Much search has been made for the body, 

 but without success, so far as the writei" is aware, until the specimen 

 used in the description, and figured, was found by Mr. J. G. Fine. Un- 

 fortunately, the specimen received a fracture, about one half an inch 

 above the top of the column, when the piece of shale in which it occurs 

 was opened, and now (above the fracture) only shows the inner portion 

 of the arms of the anterior side. The column and bodj' are considera- 

 bly compressed, but the plates in the latter seem to retain their rela- 

 tive positions very well. The first radials appear to be free, but this 

 appearance very likely has been produced bj' pressure. The second 

 radial is almost certainly free, except in the right posterior ra}', in 

 which that piece articulates with the first anal plate. In that respect, 

 it approaches very near to Cyathocrinus, in wdiieh the second radial 

 is entirely free. This peculiarity, in connection with others, has in- 

 duced me to place the species only provisionally under Dendrocrinns. 

 until other specimens can be found which will better show the charac- 

 teristics of the species. 



In the form and structure of the calyx, below the radials, T). ( /) ciir- 

 fus is somewhat like both D. nisticus, Billings, from the Trenton, of 

 Canada, and D. Osivec/oensis, Meek and Worthen, from the Cincinnati 

 Group of Illinois, but in the form of the primary radials, in the struc- 

 ture of the arms, and in the position of the anal plates there is con- 

 siderable difference. There is no species found in the vicinity of Cin- 

 cinnati to which it is near enough related lo necessitate comparisons. 



Formation and locality, same as the last. 



Paleaster finei, u. sp. (Plate VII., figs. 15, loa, 15b.) 



Small; ra3'S five, of medium length, rather broad, pointed, and nar- 

 rower where they are attached to the much contracted bod}', than they 

 are about the center of their length. 



Dorsal side of rays composed of four rows of pieces, that aVe quite 

 close fitting, as wide as long, from twelve to fourteen in each row, and 

 increase in size inward to the disk, which is composed of irregularly 

 shaped and prominent pieces, some of which are smaller and others 

 larger than those composing the rays; the pieces in the marginal rows 

 are more prominent than the two rows between them, and have a small 

 pit in the center, probably for the articulation of a spine. Madrepori- 

 form body rather small, circular, verj' prominent, and marked b}' strong 



