bloomer: malformed specimens of anodonta cygnea, l. 137 



along these injured portions, otherwise the remaining parts of the 

 viscera are normal. 





4.<! a. 



\ 



_ Ai 





Anodonta cygnea, L. 



Fig. I. — View of part of the animal of specimen A. 



Fig. 2. — View of part of the animal of specimen B. 



a. d. thickened growth and tentacular fringe of mantle-lobe, f foot. 1. i. g. 

 left inner gill. 1. o. g. left outer gill. 1. p. labial palp. r. m. 1. right mantle-lobe, 

 r. i. g. right inner gill. t. f. tentacular fringe. 



