Silurian Fossils. 3 



Peebles, in the northern part of Adams county. It is the 

 upper part of the Alger member. In Lewis county, Kentucky, 

 the following fauna has been collected from this upper part of 

 the Crab Orchard formation : 



Calymene clintoni, Hall. 



Beyrichia lata-triplicata, Foersle. 



Chonetes vetustiis, Foerste. 



Stropheodonta mimdula, sp. nov. 



Camarotoechia congruens, sp. nov. 



This fauna is of interest since Calyincnc clintoni and }3ey- 

 tichia lata may be regarded as representatives of the eastern 

 Clinton, as exposed in Oneida county. New York. 



In the lower part of the West Union limestone overlying 

 the Crab Orchard formation, in the vicinitv of ]^Iartins. in 

 Lewis county, Kentucky, the following fauna was collected in 

 a single, small, strongly weathered sandy block: 



Dalmanites limulurus-brevicaiidatus, var. nov. 



Homolanotus delphinocephaliis, Green. 



Calymene niagarensis. Hall. 



Illaenus depressiis, Foerste. 



Diaphorostoma cliftonensis, Foerste. 



Stropheodonta planus, sp. nov. 



Spirifer radiatus, Sowerby. 



Camarotoechia pisa (?), HalLand Whitfield. 



Camarotoechia acinns-snbrhomboidea, var. nov. 



Camarotoechia congruens, sp. nov. 



Favosites sp. 



It is of interest to note that in Oneida cotmty. New York, 

 Dalmanites liniuhirits and Homolanotus delphinocephahis 

 occur in the top of the series to which the name Clinton was 

 originally applied, apparently above the Calymene clintoni 

 horizon. 



The recent investigations of ^^^m. F. Prouty, in the ^leso- 

 Silurian deposits of ]^Iaryland, have resulted in finding a fauna 

 containing Dalmanites liiunlurus and Homolanotus delphinoce- 

 phaliis immediately "above another fauna containing Calymene 

 clintoni. This Calymene clintoni fauna occurs in the upper 

 fossiliferous division of a series of clays or argillaceous 



