PLATE 20 



155. Cottonia nodlplicata (Cox), p. Jk 



156. Calltpara bullata (Swalnson), p. k^ 



137. Alcithoe (Erlcusa) fuslformls (Swalnson), re- 



duced In size, p. 52 



138. Gutvil lea alabastrlna Watson , p, 19 

 159' Volutoconus coniformis (Cox), p. 44 



