Xl KEY TO UROCOPTIIXE. 



a 1 . Spire entire or nearly so; dull or not especially 

 glossy. 

 &. Apex ribbed. Microceramus, xvi, p. 151 ; Pin- 



eria, xvi, p. 108. 



6 1 . Apex smooth, the tip sometimes amputated. 



Macroceramus, xvi, p. 113. 



