AUSTRALIAN MALACOSTBACA. 135 



slightly but distinctly emarginate, with the lobes rounded. Hand 

 of male with the upper and lower part granulous between the 

 tubercles ; the ridge upon the outer surface in the male divided 

 into five acute tubercles, of which the second is the largest. 

 Ridge upon the external surface of the mobile finger thin, 

 smooth, not beaded. Spots upon the carapace brownish-red. A 

 brownish-red patch on the basal half of each lateral spine, [iff.] 

 Port Denison ; Port Curtis. 



259. Matuta picta. A.M. 



Matuta limaris, Leach, Mool. Misc., iii., p. 13, pi. cxxvii., 

 figs. 3-5. 



Matuta planipes, Desm., Cons. Crust., p. 102 (1825), necFabr. 



Matuta picta, Hess, Arch, fur Nat., xxxi., p. 158, pi. vi., 

 fig. 13 (1865). 



Carapace distinctly granulated. Tubercles of the carapace 

 and postero-lateral margins strongly marked. Lateral marginal 

 spine of moderate length, directed slightly forward. Front 

 obtuse and rounded, or slightly emarginate. Hand not granulous 

 upon its external surface ; tubercles on the upper part rounded 

 and obtuse ; ridge on external surface divided into four or five 

 lobes, of which the second is an acute spine, the remainder small, 

 obtuse, or truncate. Ridge upon the mobile finger distinctly 

 striated in the greater part of its length, and beaded at the 

 distal extremity. Spots upon the carapace very numerous and 

 minute, often disposed in reticulated lines. [M.~\ 



Port Jackson ; Moreton Bay, etc. ; also found at Ceylon, 

 Zanzibar, the Mauritius, and the Seychelles. 



Family III. CALAPPIDJE. 

 Afferent canal to the branchiae entering behind the ptery- 

 gostomian regions. G-enital appendages of the male exserted 

 from the base of the fifth pair of legs. Terminal joints of the 

 external maxillipedes not concealed beneath the second and 

 third joints. 



G-enus Caiappa, Fabr. 



. Carapace very convex, broad behind, arcuate in front, with 

 the latero-posterior margin produced over the ambulatory legs, 



