STATE GEOLOGIST. 241 



scAPHOLEBERis, Schodler. 



In a former paper S. mucronata was reported from this locality with 

 the remark that only the unhorned variety seems to occur here. A 

 rather diligent search has failed to find var. f route cornuto, though our 

 waters have been carefully searched at intervals for several years and 

 at different seasons Birge quotes only this variety. However, the 

 species is not common and the other form may yet be discovered. 

 See Fig. 5. 



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