OF NEW ZEALAND. 5 
Carapace triangular, rather convex, and more or less tubercular and 
spinose. Rostral spines rather long, and divergent from their base. 
Orbits large, with the upper margin projecting, with two deep fissures; 
lower margin usually incomplete or widely emarginate. Basal joint of 
the external antenne large and broad, with two spines at its distal 
extremity, flagellum excluded from the orbit by the enlargement of 
the basal joint. Epistome transverse. Third joint of the external 
maxillipeds truncate above. Anterior legs in the male large, arm 
usually with a row of spines above, wrist with a ridge crossing 
obliquely its outer surface or simply tuberculated, hands rather com- 
pressed, fingers acute. Abdomen of ¢ and 9 seven-jointed. 
Sub-Genus PARAMITHRAX. 
Paramithrax, Miers, Ann. Mag. Nat. Hist. (ser. 4) xvu, p. 219, 
(1876). 
Anterior legs in the male enlarged, hand compressed, fingers with a 
vacant space at base between them when closed, wrist with two 
longitudinal ridges, one on the upper and one obliquely crossing the 
outer surface. 
8. Paramithrax peronii. 
Paramithrax peronii, M. Edw. Hist. Nat. Crust. i, p. 324, (1834) ; 
Jacquinot and Lucas, Voy. Pole Sud. Zool. ii, Crust. p. 10, pl. i, fig. 3, 
(1853). 
Carapace hairy, covered with large smooth tubercles and with 
spinous tubercles, forming a longitudimal median series, upon the gastric, 
cardiac, and intestinal regions. Rostrum formed of two long spines. 
Four spines upon the sides of the hepatic and five upon the sides of 
the branchial regions. Basal joint of the external antennae terminating 
anteriorly in two spines, flagellum not concealed beneath the rostrum. 
Anterior legs very large; arm with several large spinous tubercles 
above; wrist with a strong even ridge on its external surface; hands 
very large, smooth; fingers acute at the extremities. Ambulatory 
legs hairy. Length, 24 in.; breadth, l?in. (J. &L.). 
New Zealand ; Akaroa (Hombr. and Jacq.); Australia (Coll. Brit. Mus. ). 
In the above description the spines of the upper orbital margin are 
apparently included among the lateral hepatic spies. In this species 
the spines at the distal end of the basal joint of the external antenne 
