Trans. L'pool Biol. Soc. 



Vol. IX., PI. XV, 



verve 



dorsad pedciZ r^rve. 



F/G.5 



FIG. 6 



F/G. 7 



"rim 



J.A.C. DEL. 



fig. e 



...61 



FIG. 9 



DBNDRONOTUS. 



