Strophomena and Other Fossils 
131 
An interior of a brachial valve is found in the collection of Dr. 
George M. Austin. Its hinge-area is flat, inclined at an angle of 
about 20 degrees with the plane passing parallel to the margins 
of the valve. Cardinal process of medium width, with a narrow 
groove down the middle posteriorly. A low median elevation 
extends from the thickened area between the crural plates for- 
ward between the areas where the muscle scars should be. Deep 
and broad dental sockets; no evidence of an extension of the 
crural plates beyond the anterior margin of the hinge-area. 
Austinella kankakensis, from the Richmond at Wilmington, 
Illinois, is described by McChesney as having 60 to 70 radiating 
striae. Austinella whitfieldi, from the Richmond at Spring Valley, 
Minnesota, occurs in the same division of the Richmond, and 
probably is specifically identical with Austinella kankakensis. 
From these species, Austinella scovillei differs only in the smaller 
number of radiating plications. 
Austinella whitfieldi, WinchelD^ 
{Plate VIII, Fig. 9) 
A figure of the quadratic muscular area is presented on plate 
VIII, Fig. 9. It is more rectangular than in the case of the 
figures published hitherto, and was secured by photographing 
a clay cast taken from a sharp natural cast of the interior of a 
pedicel valve, belonging to the group numbered 8114, in the Gurley 
collection, preserved in the Walker Museum of Chicago Universit}^ 
Clitambonites multistriata, sp. nov. 
{Plate X, Fig. 12) 
Three-quarters of a mile north of the railroad station at Dan- 
ville, Kentucky, the richly fossiliferous zone belonging to the 
Faulconer division of the Perry ville bed consists of fine-grained 
whitish limestone. Not all of this section, however, consists of 
fine-grained limestone. Some of the layers are distinctly granu- 
lar, but all of the granular layers are distinctly whiter in color 
than any belonging to the Paris limestone, beneath. In these 
Ninth Ann. Re'pt. Geol. and Nat. Hist. Survey, Minnesota, p. 115, 1881. Min- 
nesota Geol. Survey, vol. iii, p. 437, 1893. 
