Cinciiiuafian and Lexington Fossils 83 



nasiUe border extends fully 4 mm. forward from the anterior bor- 

 der of the glabella. Viewed from the side, it does not appear 

 strongly retrorse, as in the specimens from the Waynesville bed or 

 from the Alaysville formation. Of the cephalon, only the cast of 

 the lower side of the chitinous integument forming the upper sur- 

 face of the cephalon is preserved, but this is sufficient to indicate 

 the chief characteristics of the specimen as described above. Spec- 

 imens of this type have been identified by Clarke with Calyniene 

 senaria, Conrad. In the specimen at hand, the postero-lateral out- 

 lines of the cephalon, including the genal spines, are not well pre- 

 served, but there is no reason to believe that they differ essentially 

 from the form figured as Calyniene senaria by Clarke, in the Pale- 

 ontology of Minnesota, vol. 3, part 2, p. 700, in 1897. Since this 

 figure is based on a cast of the original specimen, it must be au- 

 thentic. 



Calymene abbreviata, sp. nov. 



(Plate III, tig. 17.) 



In the upper part of the Greendale bed, at the railroad cut a 

 mile south of Rogers Gap, Kentucky, at the telegraph pole marked 

 as 61 miles south of Cincinnati, a species of Calymene occurs which 

 is characterized by the straightened, truncated anterior margin of 

 the glabella. The anterior margin of the fixed cheek is more 

 prominent and abrupt. The anterior border of the cephalon is 

 somewhat flattened, and, owing to the truncation of the anterior 

 margin of the glabella, appears a little more remote from the lat- 

 ter than in most other species. A little antero-lateral to the lateral 

 extremities of the frontal lobe of the glabella, the anterior border of 

 the cephalon presents on each side a low blunt elevation. In con- 

 sequence, an anterior view of the border appears slightly concave 

 above. 



Calymene callicephala, Green. 



Calymene callicephala was described by Dr. Jacob Green in an 

 article on North American Trilobites, published in the Monthly 

 Journal of Geology, in 1832. The type, located at that time in 

 the Philadelphia Museum, the present location of which however, 

 is unknown, was labelled as coming from Hampshire, Virginia. 

 Hampshire is one of the northeastern counties of West Virginia, 

 bordering on the Potomac river, and is not known to contain any 

 Cincinnatian rocks. This type is represented by cast No. 2 of 



