ATJSTEALIAW MAIACOSTBACA. 77 



131. Neptunus pelagicus. A.M. 

 Cancer pelagicus, Linn., Syst. Nat., (ed. xii.) p. 1042 (1766). 

 Lupea pelagica, M.-Edw., Hist. Nat. Crust., i., p. 450 (1834). 

 Neptunus pelagicus, A. M.-Edw. (part), Archiv. Mus. Hist. 



Nat., x., p. 320 (1861) ; Miers, Ann. Mag. Nat. Hist. (4), xvii., 

 p. 221 (1866) ; Cat. Crust. N.Z., p. 25 (1876). 



Carapace wide, with very coarse granulations, without tubercles 

 on the gastric and cardiac regions. Teeth of the lateral margins 

 short, wide at the base, ninth epibranehial spine long, acute. 

 Eront six-toothed, the. median teeth smaller but never obsolete. 

 Orbits divided above into three lobes by two deep fissures, the 

 middle lobe with a small spine at its external angle. Anterior 

 legs very long and slender. Anterior margin of the arm with 

 three, four, or even five spines ; there is also a single spine at the 

 extremity of the posterior margin. Wrist with an acute spine 

 upon its inner, and a similar smaller spine upon its outer surface. 

 Hand usually very long and slender, with three spines, two 

 placed above the base of the mobile finger, and one over the 

 articulation of the hand with the wrist. 



Eastern Australia. A common species in the Sydney market. 

 Very widely distributed in the Oriental Region. 



132. Neptunus sanguinolentus. 



Cancer sanguinolentus, Herbst, Krabben u. Krebse, i., p. 161, 

 pi. viii., figs. 56-57 (1796). 



Portunus sanguinolentus, Eabr., Ent. Syst. Suppl., p. 367 (1798). 



Lupea sanguinolenta, M.-Edw., Hist. Nat. Crust., i., p. 451 

 (1834) ; Regne animal de C, Atlas, pi. x., fig. 1. 



Neptunus sanguinolentas, A. M.-Edw., Nouv. Arch, du Mus., 

 x., p. 319 (1861) ; Miers, Cat. N.Z. Crust., p. 26 (1876). 



Carapace slightly convex, finely granulous, with moderately 

 prominent lines upon the gastric region. Latero-anterior margins 

 very long and oblique, lateral spine very long and acute. Front 

 with six teeth, the two middle very small, the next long and 

 acute, the outermost short and obtuse. Orbital margin straight, 

 with two small fissures. Anterior legs long and slender, arm 

 with three or four spines upon the anterior margin, but without 

 a spine at the extremity of the posterior margin. "Wrist with a 



