144 AUSTRALIAN MALACOSTRACA. 



thick and very short ; basal joints expanded ; flagellum very 

 short. External maxillipedes operculiform, Anterior legs very 

 strong, but of moderate length ; carpus much flattened, immobile 

 linger acutely deflexed. Four posterior pairs of legs with the 

 terminal joint lamelliform ; the fourth pair inserted above the 

 third, and the fifth above the fourth. 



272. Ranina dentata. 



Banina serrata, Lamarck, Hist, des Anim., s. Vert., t. v., p. 225 ; 

 Desmarest, Cons., p. 140 ; Gfuerin, Iconogr. Crust., pi. xiv., 

 fig. 3. 



Banina dentata, Latreille, Encyclop., t. x., p. 268 ; Milne- 

 Edwards, Hist. Nat. Crust., t. ii., p. 194, pi. xxi., figs. 1-4 ; 

 De Haan, Faun. Jap., Crust., p. 139, pi. xxxv., figs. 1-3. 



Carapace covered with depressed, narrow, and much elongated 

 tubercles ; antero-lateral border concave in the male, convex in 

 the female, and divided into seven lobes of which the median, 

 which is not at all prominent, presents in the middle a triangular 

 rostrum, and on each side a prominent tooth ; the internal 

 lateral lobes thick and terminating in a single tooth, the median 

 lateral armed with two teeth, the external lateral with three, 

 which are flattened, triangular, and rather large in the male ; 

 immediately behind these on the lateral border, is another 

 tridentate lobe of similar shape ; the rest of the lateral border 

 finely denticulated. Anterior legs rough ; two stout spines on 

 the upper border of the carpus and of the hand ; five teeth on 

 the lower border of the hand ; mobile finger denticulated above 

 and below. [M.-K] 



Eastern Australian Coast. Found also in the Indian Seas. 



Grenus Lyreidus, De Haan. 



Sides of the carapace converging anteriorly, the antero-lateral 

 margin very oblique, almost longitudinal, the anterior margin 

 very narrow. Tarsi of the second, third, and fifth feet narrow ; 

 fifth pair of legs small, almost filiform. 



273. Lyreidus tridentatus. A.M. 



Lyreidus tridentatus, De Haan, Fauna Japonica, Crust., p. 140; 

 pi. v., fig. G (1849). 



