second pair, the palms of the hands oblong, smooth, the 

 fingers short, slender, curved, touching only at the ex- 

 tremities when closed. Second pair of legs longer than 

 any of the succeeding pairs. Tarsi stout, curved, spinulose 

 beneath. Abdomen of male seven-jointed ; of female very 

 broad five-jointed, the three basal segments and the ter- 

 minal segment free or nearly so, the intervening seg- 

 ments coalescing and much enlarged. Length of the largest 

 female 1 inch, of the largest male f inch. 



Hab. Cape Howe, Australia. Type. B.M. 



This species differs from the two mentioned above : in 

 its broader carapace, stouter limbs, and cylindrical rostrum 

 which is excavated at the end. The flattened granulations 

 and tubercles are very different from the high conical 

 tubercles of X. tuberailatus, the female abdomen of which 

 is only three-jointed, all the segments coalescing, except a 

 single basal and the terminal one. 



Sub-tribe Cancroidea, Dana. 

 U.S. Explor. Exped. XIIL, Crust. I., p. 142 (1852). 



Genus Nectocaecinus, Milne-Edwards. 

 ArcUv. Mus. Hist. Nat. X.,p. 404 (1861). 



Nectocaecinus antaecticus. 



Portunus antarcticus, Romh. & Jacq. Voy. Pole Sud. III., 

 Crvst. p. 51, tah. 5, /. 1 (1853) ; White, Lid Crust. Brit. 

 Mis., p. 25 (1847) ; Zool. Erebus and Terror, tah. l,f.2 

 (1874). 



Nectocarcinus antarcticus, Milne-Edw. Archiv. Mus. 

 Hist. Nat. X., p. mi (1861). 



Hab. South Seas. B.JI. 



jSTectocaecixus integeifeoxs. 



Portunus integrifrons, Latr. Encyel. Mdth. X, p. 192 : 

 Milne-EdvMrds, Hist. Nat. Crust. 1., p. 445 (1834); White, 

 List Crust. Brit. Mus., p. 26 (1847) ; Zool. Erebus and 

 Terror, tab. l,f. 3 (1874). Young. 



Nectocarcinus integrifrons, A. Milne-Edw. Ann. Sci. 

 Nat. {ser. 4) XIV., p. 220 ; Archiv. dn Museum X., p. 406, 

 pi. 38 (1861). 



Hab. New Zealand ; Australia, Port Jackson. B.M. 



The young specimens in the Museum vary much in the 

 pubescence of the carapace, which is sometimes covered 

 with hairs, at others, quite destitute of them, but they are 

 all much smaller than the one figured by M. A. Milne- 

 Edwards Q.c.) which is represented as quite glabrous. 



Nectocaecinus tubeeculosus. 



Nectocarcinus tuberculosus, A. Milne Edw. Ann. Sci. 

 Nat. {ser. 4) XIV., p. 220 ; Archiv. du Museum X., p. 405, 

 pi. 37 (1861). 



Portunus integrifrons jun., Zool. V. Erebus and Terror, 

 tah. 1,/. 4 (1874). Young. 



Hab. Van Diemeu's Land {Young). B.M. 



Genus Platyonychus, Latreille. 



Eneijcl. MMh. X., p. 152 {part.) ; Bell, Brit. Crust., p. 83 



(1853). 



It appears better to restrict the name Platyonychus to 

 the species with a carapace broader than long, the tarsal 

 joint of the fifth pair of legs broad, oval and rounded at 

 the end ; and elongated hands, e.g., Platyonychus ocellatus, 

 Herbst, and P. hipustulatus, Milne-Edwards, and to retain 

 Dr. Leach's earlier name, Portumnus, for the species with 

 a carapace about as broad as long, an elongated, acute, 

 lanceolate tarsal joint to the fifth pair of legs, and small 

 hands, Portumnus latipes (Pennant) Leach, P. nasutus, Latr., 

 and P. africanus, A. Milne-Edw., as was first proposed by 

 Professor Bell, British Crustacea, p. 83, but where the 

 characters of the tarsi of the fifth pair of legs have been 

 inadvertently transposed. M. Milne-Edwards, in the 

 Histoire Naturelle des Crustacis, confounds Dr. Leach's 

 original name Portumnus, with Portunus, Fabr., and refers 

 all the species to Platyonychus. 



Platyonychus bipustulatus. 



Platyonychus hipustulatus, Milne-Edw. Hist. Nat. Crust. 

 l.,p. 437, pi. 17, /. 7-10, (1834) ; White, List Crust. Brit. 

 Mus., p. 24 (1847) ; A. Milne-Edw., Archiv. du Museum's.., 

 p. 413 (1861). 



Portunus catharus, White, in Bieffenb. New Zealand II., 

 p>. 264 (1843) ; Zool. Erch. a^id Terror, tab. l,f. 1 (1874). 



Corystes (Anisopus) punctata. Be Haan Faun. Japan, p. 

 U,pl. 2,f. 1 (1850). 



Platyonychus purpureas, Bana, U. S. Explor. Exped. 

 XWl.,' Crust. I., p. 291, pi. 18,/. 3 (1852). 



Hab. Australasia, Chili. B.M. 



The specimen figured is the type of Portunus Cathams, 

 White, whirli M. A. ]\[ilne-Edwards, in his paper in the 

 Archiv. du ^Museum aliove (iuuted, rightly considers synony- 

 mous with I'lati/oiti/chus hipustulatus, Milne-Edwards. 



Genus Caxcer, Linnasus. 



Syst. Nat. I. 2, p. 1038 (1767) ; Leach, Malac. Pod. Brit., 



tab. 10 (1815). 



Platvcarcinus, Latr., Milne-Eclwd., Hist. Nat. Crust. 1., p. 

 412 (1834). 



CANCEE NOV.E-ZELANDLi). 



Platycarcinus novre-zealandijB, Lucas in Hombr. and 

 Jacq. Voy. Pole Sud., p. :U, pi. 3,/. 6. 



Cancer Novii? Zi'al;iiiili:i', White, List Crust. Brit. Mus., p. 

 20 (1847); Zool. Jurhus and Terror, tab. 1,/. 5 (1874). 



Cancer Nova'-Zelandiffi, A. Milne-Edw., Nouv. Archiv. dio 

 Museum I., p. 189 (1865). 



Hab. New Zealand. B.M. 



This species is very probably identical with the C. 

 pleheius, Poeppig, from Chili. The granulated ridges on the 

 claws, and the shape of the teeth on the latero-anterior 



