ANODONTA 



8. Three transverse sections of a spirit specimen as seen with the naked eye. 



(a) Through the middle part of the foot. Mantle-lobe ; foot ; outer gill ; inner gill ; (notice 

 attachment of lamellae) ; liver ; rectum ; intestine in foot in several places. 



(b) Through the hinder part of the foot. Mantle-lobes ; foot ; outer gill ; inner gill ; (notice 

 attachment of lamellae) ; epibranchial chamber ; pericardium ; ventricle ; rectum ; auricles ; vena-cava ; 

 non-glandular part of kidney ; glandular ditto. 



(c) Behind the foot. Notice floor of epibranchial chamber continuous across the middle 

 line. 



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