THE CRUSTACEA OF NEW JERSEY. 115 



little inward toward median line. Supplementary lobes very 

 short, at least three times wide as long- and close to bases of 

 posterior lobes. In preserved material these secondary lobes 

 often turn white or whitish and become opaque. Lateral grooves 

 bent sharply outward at anterior ends, nearly at right angles to 

 lengthwise-axis and end just behind sucking'-disks. Frontal 

 plates nearly w^ide as carapace, project over bases of first an- 

 tennns, thus very prominent. Free thorax segments about same 

 length, diminish greatly in width backwards. Second segment 

 not entirely filling space between hind lobes of carapace, only 

 slig'htly overlaps inner edges of secondary lobes, its lateral 

 plates broad and enlarged at tip into spathulate form, hind edge 

 nearly straight. Fourth segment ons-fifth narrower than genital 

 segment, lateral edges with narrow sharp cun^e at center. Gen- 

 ital segment elliptical, much longer than wide, with evenly 

 rounded corners. Fifth legs small, blunt, slightly enlarged at 

 tips, carried forward some distance in front of sixth pair. Lat- 

 ter little longer, situated at hind corners and usually curve in- 

 ward toward median line. Inside each and close to its base on 

 hind edge of genital segment a single large spine. Abdomen 

 elongate, longer than wide, two joints of same length, basal 

 spindle-shaped and termiinal wedge-shaped with no protuber- 

 ance between bases of anal laminae. Latter nearly twice as long 

 as wide, ends rounded diagonally, outer edge longer. Each 

 armed with four set?e, inner removed some distance from others. 

 First antenna? normal, basal joints almost wholly covered by 

 projecting ends of frontal plates. First adhesion pads ovate, 

 their longitudinal diameters well inclined to body axis, placed so 

 near edge of carapace behind first antennae that nearly half of 

 pad projects beyond carapace, visible in dorsal view. Second 

 pair just outside bases of second antennae, elliptical, with long 

 diameters parallel to body axis. Third pair egg-shaped, in usual 

 position between first maxillipeds. Fourth pair elongate-ellii> 

 tical, on lateral edges of second segment lobes, and parallel 

 with body axis. First and second pairs much smaller than in 

 female. Second antennae larger than in female, two basal joints 

 considerably swollen besides sharing in formation of adhesion 



