Preliminary Notes on Cincinnatian and Lexington Fossils 317 
|| limestones in the Tunnel Cut east of Carlisle, Kentucky. A 
1: similar specimen Leptcena was found north of Ford, Kentucky, 
|| about a quarter of a mile before reaching the second railroad tun- 
f nel, associated with Clitamhonites diversus-rogersensis^ Plectorthis 
(Eridorthis) rogersensis, Plectorthis {Eridorthis) nicklesi. 
f| Strophomena vicina, sp. nov. 
{Plate VII, Figs. I2, A, B.) 
Shell closely related to Strophomena planumhona. The hinge- 
I line usually is conspicuously longer than the width of the shell 
! across the middle, producing an outline similar to that shown by 
that variety of Strophomena plamimbona which was described by 
James as Strophomena> elongata. However, the brachial valve 
does not attain as strong a convexity and the pedicel valve usually 
is only slightly concave, producing an appearance closely resem- 
bling those specimens of Strophomena planoconvexawhichh-AYQ a 
more elongated hinge-line. Compared with Strophomena plano- 
convexa, the radiating striations are much finer, equalling in this 
respect typical specimens of Strophomena planumhona. The 
muscular scars of the pedicel valve closely resemble those of the 
latter species, but the limiting border is much less conspicuously 
elevated. The vascular markings of this valve usually are faint 
or almost obsolete, although occasionally fairly distinct. There 
never is a strongly raised thickening of the shell along the anterior 
border interiorly. Frequently the margin of this part of the 
interior of this valve is striated in a radiate manner. The interior 
of the brachial valve closely resembles that of Strophomena 
planumhona. 
Compared with Strophomena trentonensis., from the Trenton 
shales of Minnesota, the shell is larger, and the outline is more 
extended along the hinge-line, making it less quadrangular. The 
shell is not wrinkled obliquely along the hinge-line. 
l| Geological position. In the upper part of the Paris bed along 
the road south of the Crow distillery, on Glen creek, in the north- 
western part of Woodford county, associated with Llehertella 
frankfortensiSy and immediately below a layer containing Stroma- 
tocerium pustulosum. In a blue, fine-grained limestone thirty 
feet below the highest beds containing an abundance of Rhyn- 
chotrema incequivalvcy in the southwestern part of Frankfort, 
