1Q CRUSTACEA. 



is not at all oblong ; and the same is true of the last segment, which is 

 obtuse. 



Chlorodius gracilis. 



C. sanguineo affinis. Carapax non nitidus, antice areolatus, posticd non 

 areolatus, sulcis non prof undis, areolis 2R,SR non discretis, margim 

 antero-laterali bene b-dentato. Manus carpusque crassi, Iwves, nee 

 rugati nee exesi. Pedes 8 postici compressi, inermes, pubescentes. 



Near C. sanguineus. Carapax not shining, anteriorly areolate, poste- 

 riorly smooth, sulci not deep, areolets 2 R, 3 R not separated, antero- 

 lateral margin neatly 5-toothed. Hand and carpus stout, smooth 

 and even. Eight posterior feet compressed, unarmed, pubescent. 



Plate 11, fig. 13 a, male, enlarged two diameters; b, extremity of 

 male abdomen ; c, female abdomen ; d, tarsus of fourth pair ; e, part 

 of outer maxilliped. 



Wakes Island, Pacific Ocean. 



Length of carapax, five lines; greatest breadth, seven and one- 

 fourth lines; ratio of length to breadth, 1 : 1-45. 



Differs from the sanguineus in having but five marginal teeth, there 

 being none posterior to S, and no inferior tooth between D and E, 

 which characterizes that species ; also, unlike the exaratus, the carpus 

 and hand are not uneven in the upper surface, and the teeth are 

 thin and even. In the male, the areolets are rather faint, and 4L 

 and 5 L are coalesced, and of about equal width ; in a female, 4 L and 

 5 L are faintly separated, and the latter is the broader, as in the san- 

 guineus. 



Chlorodius nodosus (Randall), Dana. 



Carapax antich valde areolatus, areolis totis conspicuis, super ficie mi- 

 nute punctatis, 1M, 2M subcoalitis, 2Mnon subdivisis ; j route paulo 

 producto, emarginato, lobis margine concavis; margine antero-late- 

 rali crassiusculo, Q-7-dentato, dentibus D, d' , E, N, T, S, s', D vix 



