486 J. STEVENS, NOTE ON PRO ALES {NOTOMMATA) GIG ANTE A GLASCOTT. 



favoured by the snails was the common Pond-weed [Potamogeton 

 natans) ; the under side of the leaves. A good many occurred 

 also on Anacharis. 



I desire to express my thanks to Mr. Rousselet for his great 

 kindness in assisting me in the identification and minute descrip- 

 tion of this animal. 



Explanation of Plate 24. 



Pig. 1. Proales gigantea, Glascott, dorsal side, x 100. 



2. Proales gigantea, ventral side, x 100. 



3. Proales gigantea, side view, X 100. 

 4. Proales gigantea, the i^iws, x 1125. 

 ,, 5. Snail's egg, with Proales gigantea and ova inside, x 6(j. 



5J 



Journ. Quekett Microscopical Club, Ser. 2, Vol. XI., No. 71, November 1912. 



