172 NEW YORK STATE MUSEUM 



These differences will be found to pertain chiefly to minor fea- 

 tures but we conclude that there is in the Gaspe specimens a dis- 

 tinction from these allies in time and structure which is clearly 

 defined and significant in the interpretation of these faunas. It is 

 not at present possible to say whether the New York Oriskany 

 species is of the same type. 



Dimensions. The only specimen which we have observed 

 having the parts together is in the Redpath Museum of McGill 

 University. We owe to Prof. F. D. Adams the opportunity of 

 studying this example. It is from Grande Greve and has a length 

 of 20 mm. Cranidia of other specimens are of about the same 

 size. 



Lower Devonic. Grande Greve and Perce rock, P. Q. 



Cordania gasepiou nov. 



Body small, oval, cephalon with ovoid coarsely tubercled glabella 

 and small basal lobes, small and highly elevated eyes beneath which 

 the cheeks are excavated and concave and the anterior limb also 

 concave and broad, bordered by an upturned thickened rim ; genal 



Cordania gasepiou 



angles extended into slender spines reaching more than two thirds 

 the length of the thorax. There may be a spinate tubercle on the 

 neck ring but this has not been fully determined. The thorax has 

 segments which are crested in the axial line by a row of spinules 

 apparently increasing somewhat in length posteriorly and the lateral 

 moieties of the segments are finely pustulose. The pygidium has 



