I 



NO. 8 



EDRIOASTEROIDE A B ASSLER 1 1 



Fig. II. IsoropluiscUa inconditus (Raymond, 1915). Example, X 4, a depressed 

 circular expansion with the plate structure of Isorophus but with 3 

 of the ambulacra directed to the left and 2 to the right Trenton 

 limestone: Hull, Quebec, Canada. 



Fig. 12. Focrstcdisnis grandis, new genus and species. The holotype X 2 a 

 flat circular expansion with the ambulacra all directed toward the 

 right. Trenton (Curdsville limestone): Near Troy, Woodford 

 County, Ky. 



