362 REPORT OF NEW JERSEY STATE MUSEUM. 



— Stebbing, Hist. Recent Crust. (Int. Sci. Series LXXIV), 1893, p. 185. 



(On Smith.) 

 Kingsley, Am. Nat., XXXIII, 1899, p. 824. Middle and Southern 



Atlantic coast. 

 Upogebia afUnis M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VII, 

 1905, p. 17. (Massachusetts and Connecticut.) 



Description. — ^Carapace compressed, deeper than broad, 

 slightly narrowed in front, surfaces slightly convex. Length of 

 carapace about equals first four abdominal segments. Gastric 

 region of carapace elongated, rather triangular, hairy. Abdomen 

 with first and sixth segments contracted or constricted slightly 

 as compared with other four equal segments, all with convex sur- 

 faces. Telson broad, its entire posterior edge broadly ciliated, 

 two outer plates each side broad, also each with two strong radiat- 

 ing ridges on upper surfaces. Median plate of telson much 

 wider than deep, with transverse ridge above basally, and median 

 vertical or longitudinal sulcus also dorsally. Rostrum small, nar- 

 rowly triangular, depressed, smooth below and hairy above. Con- 

 tinued back above each eye process similar and shorter, though 

 on same plane w'ith rostrum. Eyes close together, with thick 

 stalks not larger than their own diameter, and eyes themselves 

 globular, and dark in color. Antennules small, peduncle longer 

 than biramous flagella, first joint of peduncle longer than second, 

 which smaller, and third joint but little less than flagella. 

 Peduncle of antennules reach slightly beyond second joint of 

 peduncle of antenna. Antennae with first two joints of peduncle 

 robust and short, third and fourth joints subequally longer, 

 though less robust, and fifth joint smaller. Flagella of antennge 

 long and slender, reaches back to articulation between second and 

 third abdominal segments. Peduncles of antennae with large 

 close-set cilia and peduncles of antennules with long setae, though 

 rather sparsely. Mouth-parts not consicuous, hairy. Second 

 maxillipeds quite pediform, hind edges strongly ciliated. 

 Chelipeds quite large, of about equal development. Dact}^ quite 

 hairy, and cutting-edge with a series of six spines or teeth, of 

 which one at each end enlarged and others uniform. Pollex a 

 sharp strong spine, and six teeth of small size along basal portion 

 of inner edge. Propodus twice as long as broad, upper 

 surface with three rows of small spines, lower edge with fringe 



