Boone, Crustacea, Cruises of "Eagle" and " Ara," 1921-28 23 



The elielipeds are moderately unequal, tli6 right being the larger; 

 the basis and ischium are stout, well developed; the merus is short, 

 three-sided, wider distally, armed with numerous large, spinose gran- 

 ulae on the lateral and proximal margins ; the carpus is as large and 

 almost as long as the merus, with the entire upper and outer surface 

 paved with large spinose or dentate granulations ; on the inner lateral 

 margin these granulations form a row of five or six acute spines, while 

 farther back on the upper surface the granulations form fan-like 

 clusters of three or four, some of which are spinose on the tip, and 

 all of which are fringed anteriorly by a band of fine short red setae. 

 The propodus is massive, the upper and outer surface moderately con- 

 vex, entirely paved with granules similar to those on the carpus but 

 more crowded, entirely covering the surface ; those along the inner 

 lateral margins are produced into a series of more conical spines. 

 The thickness of the propodus along its inner face is equivalent to 

 two-thirds its width on the upper surface, which is approximately 

 equal to the length of the palm ; the propodal finger is equal in length 

 to the palm and is similarly ornamented; its cutting edge is armed 

 with a series of close-set, blunt teeth, which increase in size distally; 

 the hinged finger swings slightly obliquely and is similar and sub- 

 equal to the propodal finger. The left cheliped is very slightly 

 smaller than the right but otherwise similar. 



The first ambulatory legs are similar and equal, except that the 

 dactyl of the right leg is one-eighth inch longer than that of the left ; 

 the merus is triquetral, with a few small, spinose granules placed 

 transversely on the distal part of the upper surface; the carpus is 

 two-thirds as long as the merus and has a row of seven or eight very 

 acute spines along the upper lateral margin; the outer surface is 

 sparsely covered with granulations, like those of the cheliped; the 

 propodus is subequal in length to the carpus and has about eight acute 

 spines along its inner lateral margin and the remaining outer surface 

 granular like the carpus ; the dactyl is one and one-half times as long 

 as the propodus and is curved, tapering, with an acuminate, horn- 

 colored tip ; the lateral margins are fringed with thick, long setae, and 

 a similar line of thick shorter setae extends down the median upper 

 surface, which is practically carinated by a line of denticle-like spin- 

 ose granulations. 



The second ambulatory legs are markedly unequal, the right one 

 being slightly longer than the adjacent first ambulatory, while the 

 second left leg only reaches to the base of the long dactyl of the adja- 



