ISOPODS OF NORTH AMERICA. 



135 



FIG. 117. BATHYNOMUS GIGANTEUS (AFTER EDWARDS AND BOUVIER). a, LEFT MANDIBLE. 6, 

 CUTTING PART OF MANDIBLE (DORSAL SIDE), c, LEFT MANDIBLE (DORSAL SIDE), d, LEFTMAXILLI- 



PED (VENTRAL SIDE), e, SECOND LEFT MAXILLA j[VENTRAL SIDE). /, LEFT MAXILLIPED (DORSAL 



SIDE), g, SECOND LEFT MAXILLA (DORSAL SIDE), fi, FIRST MAXILLA (DORSAL SIDE), i, THE SAME 



(VENTRAL SIDE), j, RIGHT SECOND MAXILLA (VENTRAL SIDE), k, TIP OF EXTERNAL LACINIA OF FIRST 



MAXILLA. I, BASAL PART OF FIRST MAXILLA, m, TIP OF MAXILLARY LACINI.K OF FIRST MAXILLA. 



