JOURNAI- OF CONCHOLOCY, Voi.. I5, No. lO, SEPTEMBER, I918. 



Plate 7. 



ESUDTKUNCATUM.^ 



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E>iITIDLfMv\F:.CKA55A 



4- 



fcSLTOUM^ _ _^ w. HUMErarORME: I F^E NSLDWANUM 



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irCASEKTANlJM \ak. 1 l)\UEK05A. 



5CAL£ rOR ALL SPECIES ABOX^E. 



E'A'^INICUM. 



SCALE rOR EAMNICUM ONL\: 



_j MILLIHETIXS. 



i29. ^ 



AW5. DEL. 



Stelfox : Plsidia from the Grand Junction CanaL 



