Marrey Befchreib. d. Schaff. In^ T. I. ft. I?$. p.XiI. 

 Fanzer Entom. germ.I. n. i. p. 73. 



Habitat in aquis , pifcinis : pifcibus admodum infeftus : In pr^piiam fpeeiemi 

 CacYit. Mas glabcr, patellatus^ 



