44 The Paleontologist. June lo. 



GENUS WALOOTTIA. Miller & Dyer. 

 Walcottia sulcata, sp. nov. James. 



This species consists of sub-cylindical, slightly tortuous forms, with a 

 longitudinal groove along the center of the exposed part; a series of fine, 

 closely arranged transverse or gently oblique striae, commencing, appar- 

 ently, at the bottom of the groove, and passing over the higher rounded 

 surface to the embedded portion on each side. 



The specimen used for this description is two inches in length, and 

 one line in diameter : at one end it is broken away, the other end buried 

 in the shale. 



This species differs materially from W. nigosa, M. & D. (Jour, of Cin. 

 Soc. of Nat. Hist. Apr. 1878), in the features of the longitudinal groove, 

 the uniform width and the transverse stri^. 



Found at about 80 feet above low water mark of the Ohio river, in the 

 eastern part of Cincinnati. 



