200 EDIBLE CRUSTACEANS OF NEW SOUTH WALES. 



Mangrove Crab. 



Carapace convex, ueni-lv s^mootli, veiy finely granulated ; the lines on the 

 gastric and branchial regions distinct. Latero-anterior margins very long. 

 Front with six large flat teeth. Anterior legs very robust, arm trigonous, 

 ■with three spines upon tlie anterior, and two upon the posterior margin. 

 AVrist with an acute spine at its antero-internal angle, and two small spines 

 upon its external surface. Hand very large, with three spines above, two 

 above the base of the mobile linger, and one over the articulation with the 

 wrist. 



Color. — Olive bi'own. 



Occurs at all seasons in small numbers, and is a large and well flavored 

 crab, growing to a weight of three pounds ; daring May 1893, they were 

 exceptionally common, as many as a dozen being in the market on some 



mornings. 



Tribe II.-MACRURA. 



Abdomen elongate, extended backward, with lamellar appendages beneath. 

 Appendages to the peiudtimate segment large, laterally expanded and con- 

 stituting, with the terminal segment, a fan-like swimming apparatus. 

 Sternum usualh' linear throughout its length. Antennas very greatly 

 developed, inner without fossettes. External maxilli pedes nearly always 

 ^cdiform. Buccal cavity not distinctly defined in front. 



Family I.-PALmURID^. 



Carapace subcylindrical, broadly rounded laterally. External antennae 

 without a basal scale, the basal joints long, subcylindrical. Anterior legs 

 monodactyle. Sternum trigonous, 



Genus.— PALINURUS. 



Paliiiurus, Fabr. Suppl. Ent. 8yst. 1798. 



Carapace with a small rostrum. Anteunary segment very narrow above. 

 External antennae nearly in contact with one another at their bases, and con- 

 cealing the bases of the internal antenna', the flagelhi of which are very 

 short. 



PALINURUS IIUEGELL 



Palinurns hugelii, Heller, Vov. Novara, Crust, p. 96, 1872; Haswell, Austr. 



Malacostr. p. 172, 1882. " 

 ? Palinurns tum/'dus, Kirk, Trans. N. Z. Inst. 1879, xii. p. 311. 



Sydney Crawfish. 

 Plate XLIX. 



Carapace a little narrowed anteriorly, convex and spinose above, the 

 spines prominent, acute, and directed forwards and upwards. Eostrum 

 acute, spiniforra, directed almost straight forwards; the lateral cornua a 

 little smaller, smooth above and below ; anterior margin of the carapace 

 near the orbit with a single spine. Spaces between the spines smooth. 

 Carapace with a deep transverse sulcus in front of the posterior margin. 

 Abdomen punctate, covered Avith small, miliary granules, not sulcate in the 

 middle, the lateral cornua armed behind with several acute teeth. 



This is the common Sydney Crayfish. Mr. T. AV. Kirk has described and 

 figured, in the Transactions of the New Zealand Institute for 1879, under the 

 name of P. fwmi(/us,a, species of Eock-Lobster obtained in the North Island, 



