n r a CRUSTACEA. 



the next on either side is prominent triangular. The inner acanthus 

 of the orbit is prominent and acute. 



Cancer rufopunctatus, Herbst, loc. cit., pi. 47, fig. 6. 



Trapezia rufopunctata, Latreille, Encyc, x. 695; HoMBRON and JACQUENOT, 

 Toy. auPole Sud, pi. 4, f. 8, 9; Eydoux and Souleyet, Voy. de la Bonite, pi. 2, f. 3. 



Trapezia maculata (MLeay), I). 



Frons sat simiosus, pernio Q-dentedus. Dens lateralis acutus. Pedes 

 antici grandes, rnami nudd, carpo apicem internum rotundato aid vix 

 acuto, articulo tertlo angulum internum rectaugulato, marglnem inter- 

 num 5-§-dentato, dentibus interdum denticulatis. Pedes 8 postici 

 sparsim pubescentes, articulo tertio sat angusto. 



Front rather strongly sinuous, and somewhat six-toothed. Lateral 

 tooth acute. Anterior feet large, hand naked, carpus rounded at 

 the inner apex, third joint at inner angle reetangulate, inner mar- 

 gin dentate, teeth broad and truncate, sometimes subdivided. Eight 

 posterior feet sparsely pubescent; third joint rather narrow. 



Plate 15, fig. 4 «, animal, from Tahiti, enlarged ; />, front of a Sand- 

 wich Island specimen; c } arm of same; d, arm of another specimen, 

 from the same locality. 



From the reefs of Tahiti, among living corals ; also from the Sand- 

 wich Islands. 



Length of Sandwich Island specimen, five and a half lines; breadth, 

 six and a half lines; of Tahiti specimen, length, five lines; breadth, 

 five and one-fourth lines. Colour a grayish or reddish yellow, spotted 

 rather coarsely with rounded, deep-red spots. The coxa 4 of the eight 

 posterior legs are not three times as long as broad. The legs have a 

 few hairs only towards their extremities. 



The different dentation of the arm of the two Sandwich Island 

 specimens may indicate a more important difference than is here ad- 

 mitted; and the Tahitian specimen is somewhat peculiar in its greater 



