16 Ciiici)inati Society of Natural History. 



West Union bed, at the spring on Big Salt Lick creek, one 

 mile south of Glen Springs, in Lewis county, Kentucky, on 

 the road to Noah. Also at the same horizon in the quarry 

 southeast of west Union, in Adams county, Ohio. 



At first glance the shell does not have a strongly spirifer- 

 oid appearance, and the casts of the pedicel valve will be neces- 

 sary to make the generic reference certain. Externally, it 

 resembles Hyatella congesta, but its internal structure is 



different. 



Spirifer eudora. Hall. 



Plate II, 14 A, B. 



A small form of Spirifer eudora, 15 mm. in length. Sinus 

 and fold distinct, the latter flattened on top anteriorly, and 

 slightly depressed along the median line. Four lateral plica- 

 tions on the brachial valve, and four on each side of the sinus 

 in the pedicel valve. One specimen with traces of longitu- 

 dinal striations. 



West Union bed, in the quarry at the southeastern corner 

 of West LTnion, Ohio. 



Spirifer repertus, sp. nov. 

 Plate I, Figs. 14 A, B ; Plate II, Fig. 5. 



This species evidently belongs to the group typified by 

 Spirifer niagarensis. From this it dififers chiefly in being 

 smaller, shorter, and having fewer radiating plications. Of 

 these there are seven on each side of the median fold in a 

 brachial valve 11 mm. long and 20 mm. wide. The convexity 

 of this valve was about 3 mm. The grain of the rock is not 

 fine enough to preserve any trace of the delicate longitudinal 

 striations characteristic of this group of species. 



West Union bed, at Harin Hill, four miles west of Valley, 

 in Lewis county, Kentucky. Also at the same horizon at the 

 quarry in the southeastern corner of West Union, Ohio. 



Spirifer ha"»inensis, sp. nov. 

 Plate II, Fig. 2, A. B. 

 Shell small, 5 mm. in length. The fold of the brachial 

 valve is low but is distinctly limited laterally by grooves 



16 



