110 AUSTRALIAN MALACOSTRACA. 



maxillipedes small and not crossed by an oblique piliferous 

 crest. (Body very much depressed.) [D.] 



Grenus Plagusia, Latr. 



Carapace wide and very much depressed, with the lateral 

 margins toothed. Third joint of the external maxillipedes 

 scarcely narrower than the second at the summit, rarely longer 

 than broad. Anterior legs in the male with the hand robust, 

 longitudinally costate, scarcely compressed. [31.] 



202. Plagusia tuberculata. 



Plagusia squamosa, Lam., Hist. An. sans Vert., tome v., p. 24G 

 (1818) ; M.-Edw., Hist. Nat. Crust., ii., p. 94 (1837), nee 

 Herbst. 



Plagusia tuberculata, Lam., 1. c, p. 247 ; Latr., Encycl., x., 

 p. 14G (1S25) ; M.-Edw., Hist. Nat. Crust., ii., p. 94 (1837) ; 

 Miers, Ann. and Mag. Nat. Hist., 1878, p. 148. 



Plagusia orientalis, Stimpson, Proc. Acad. Nat. Sci. Philad. 

 (1858), p. 103. 



Carapace covered with numerous small, often depressed 

 tubercles, each of which is bordered by a fringe of short, stiff 

 hairs. Lobe above bases of second and third ambulatory legs 

 prominent, sub-acute, and not dentated. Terminal segment of 

 abdomen of male broadly semi-oval and rounded at its distal 

 extremity. [Jf.] 



Port Jackson. Commonly distributed in the Indo-Pacific 

 region. 



203. Plagusia immaculata. 



Plagusia immaculata, Lam., Hist. Nat. Anim. sans Vert., v., 

 p. 247 (1818) ; Miers, 1. c, p. 150. 



Plagusia clepressa, Latr., Encycl, x., p. 145 (1825) ; M.-Edw. 

 Hist. Nat. Crust., ii., p. 93 (1837) ; Ann. des Sciences Nat. 

 (ser. 3), Zool. xx., p. 179 (1853) ; Dana, U.S. Explor. Exped., 

 Crust., i., p. 369 (1852) ; Stimpson, Proc. Acad. Nat. Sci. Phil., 

 p. 103 (1858) ; nee Cancer depressus, Fabr. 



Carapace more convex than in the preceding ; tubercles much 

 depressed, quite naked, often almost obsolete upon the gastric 



