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THE AMERICAN NATURALIST 



[Vol. XLI 



sharply marked off by abrupt constriction, not turned to dorsal 

 side as in the type, but in line with the axis of the case; — perfora- 

 tion towards ventral side (dorsal in type). Dorsal plicse of the 

 case not distinct, but an obscure tesselation or coarse stippling 

 instead. As in Indian examples, empty cases usually lacked the 

 ventral wall, as though some enemy had found this part vulnerable. 



C. constricta Duj. ('41).— Plentiful. 



0. aspera Bryce ('92). — A few examples. 



C. habita Bryce ('94). — One example, living. 



C. quadricomifera Milne ('85-'86). — One small hyaline example. 



