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nearly straight edged, except a small rounded sinus near 
Its junction with the body of the shell, below this sinus 
there is internally a slight protuberance, the aperture is 
oblong, equally obtuse at each end. 
In general form this so much resembles B. juncius, 
that one is induced to place them in the same Genus, 
although there is a sinus in the lip of this ; but in other 
respects and in the straight form of the lip it differs from 
Pleurotoma, to which it might perhaps otherways be re~ 
fered. 
A pretty Crag fossil picked up by my communicative 
Friend, the Rev. G. R. Leathes, 
