90 Aug. F. Foerste 
Strophomena neglecta, James 12 
{Plate V, Figs. 1 A, B; S A, B, C, D, E, F ; Plate VII, Fig. 5; Plate IX, Figs. 1 A, 
B, C; 10; Plate XI, Fig. 10) 
Strophomena neglecta was described by U. P. James from the 
upper or Blanchester division of the Waynesville bed, at a locality 
north of Second Creek, reached by going 1 mile west from Blan- 
chester, .Ohio, and then half a mile north. The collecting ground 
is east of the road, along a small branch entering Second Creek 
from the south. The lower Hehertella insculpta layer is exposed 
at the base of the section. 
In the James collection, in the Walker Museum, at Chicago 
University, a series of specimens, numbered 2393, is labelled as 
types of Strophomena neglecta. Among these is the specimen 
represented by Figs. 1 A, B, on plate V, and Figs. 1 A, B, C, 
on plate IX of this Bulletin. This presents the normal aspect 
of the shell as far as the fineness and nearly equal size of the radi- 
ating striae, and the general curvature of the shell are concerned. 
The specimen is imperfect, however, anteriorly, and clay was 
moulded to it before photographing, the line of junction of which 
may be traced in the figures, especially IB. As a matter of 
fact, this attempted restoration was not very successful, and the 
outline should have been more nearly that shown by the right 
side of Fig. 3 F, on the same plate. It will be noted that in 
the case of Fig. 3 F, the left postero-lateral angle is almost rec- 
tangular, and shells with this subquadratic outline predominate. 
In the original description it was stated that in some cases the 
radiating striae vary considerably, and are irregularly arranged, 
from one to three or four of the smaller being placed between 
each two of the larger. The language used itself suggests that 
this type of ornamentation is not normal, as indeed it could not 
be, since it is characteristic of Strophomena vetusta-precursor , a 
shell occurring at the same horizon as Strophomena neglecta, and 
not recognized as clearly distinct by James, although he had de- 
scribed Strophomena vetusta himself, also from the vicinity of 
Blanchester, seven years earlier. The fact is that a moderate 
variation in the size of the striae, resulting in a grouping of finer 
striae among each pair of more prominent ones, is common, and 
Paleontologist, No. 5, p. 41, 1881. 
