THE CRUSTACEA OF NEW JERSEY. 263 



dd. Uropoda with both branches well developed, mostly lamelli- 

 form. 



e. Maxillipeds with palp embracing cone formed by distal parts 

 of mouth-organs, inner upper edge and apex never setose, 

 latter and sometimes inner upper edge (at least in males 

 and females without eggs) with outward curved hooks. 



CYMOTHOID^. 



ee. Maxillipeds with palp free, edges of last two articles more 



or less setose, never furnished with hooks. cirolanid.^. 



aa. Uropoda lateral and superior, outer rami arching over telson base; body 



elongated, narrowly cylindrical. .\nthurid.^. 



Family SPH.^ROMID^. 



Body short, oval, convex. Head transverse. First and second 

 pairs of antennae multiarticulate, with evident distinction into 

 peduncle and flagellum. Mandibles with palps. Epimera united 

 with thoracic segments. Anterior segments of abdomen united 

 into single segment, together with large terminal segment form- 

 ing biarticulate abdomen. Uropoda lateral, forming with 

 terminal abdominal segment into caudal fan. Outer branch of 

 uropoda, when present, movable, and inner fixed branch im- 

 movable. 



Genera rather numerous, and three represented in our limits. 



Key to the genera. 



a. Outer branch of uropoda not rudimentary. 



b. Outer branch of uropoda not capable of folding under iimer branch, 



and branches unlike, though only outer one salient. cilic.«;.\. 



bb. Outer branch of uropoda capable of folding under inner branch, and 



both branches similar in shape and salient. Sph.Iiroma. 



aa. Outer branch of uropoda small, rudimentary. cassidisca. 



Genus CILIC/EA Leach. 



Ciliccea Leach, Diet. Sci. Nat.. XII, 1818, p. 342. Type CiUccea latrcillii Leach, 

 monotypic. 



Maxillipeds with second, third and fourth segments of palp 

 produced into lobes. Last two segments of thorax of equal 

 length. Abdomen of two segments, first usually produced, at 

 least in male, in form of long process directed backwards. Last 



