176 REPORT OF NEW JERSEY STATE MUSEUM. 



unequal, superior ones slender without any accessory appendage, 

 but flagellum well developed and multiarticulate. Inferior an- 

 tennae strong, pediform, usually much more powerful in male 

 than in female, with penultimate joint of peduncle large and 

 produced at end posteriorly to more or less strong spiniform pro- 

 jection, and short triarticulate flagellum terminating in several 

 small hooks. Anterior lip large and broad. Posterior lip with 

 inner lobes well defined. Mandibles normally developed, palp 

 small and narrow and of two joints only, each carrying strong 

 ciliated seta. First pair of maxill?e with basal lobe subobsolete, 

 and second pair with outer lobe larger than inner. Maxillipeds 

 sublamellar, basal lobes narrowly produced, masticatory lobes 

 long and narrow with inner edge fringed with slender spines, 

 palp comparatively slender with last joint rather small, and 

 short dactylus setous at tip. Gnathopoda of same structure in 

 two sexes, anterior rather slender with ischial joint forming 

 below rounded densely setous expansion, carpus much elongated 

 and densely setous below, propodus narrow with distinctly de- 

 fined though very short palm. Posterior gnathopoda somewhat 

 stronger than anterior, meral joint forming broad lamellar ex- 

 pansion firmly connected with lower side of carpus and edged 

 with double row of extremely elongated and finely ciliated setae 

 curving anteriorly, and propodus sublinear, without any dis- 

 tinctly defined palm. Two anterior pairs of peraeopoda with 

 large broad basal joint, and meral joint more or less expanded. 

 Two succeeding pairs comparatively stout, of same structure, 

 both having meral joint obliquely expanded in front, and carpal 

 one armed outside with two oblique rows of strong spines, 

 dactylus short and inverted. Last pair of per?eopoda rather 

 elongated and slender, basal joint lamellarly expanded and 

 densely fringed on both edges with long ciliated setse. Bran- 

 chial lamellae well developed, wanting at base of posterior 

 gnathopoda, and incubatory narrow, but edged with strong set?e. 

 .Pleopoda with basal part greatly expanded inside. Two anterior 

 pairs of uropoda with rami comparatively short and coarsely 

 spinous outside. Last pair of uropoda with basal joint scarcely 

 expanded, terminal joint lamellar, setiferous. Telson small and 

 distinctly defined from last segment. 



