A. E. Yi'i-rill />i/-, //mil Crustacea of Bennmln. io.~> 



and finely punctate, without granules. The arrangement of the 

 sj>ines is sufficiently well shown by the figures. The posterior lateral 

 spine is simple, very acute, hooked, with the point turned upward 

 ami tor \vard ; the next, which is the largest and least curved, has 

 three to five small spinnles on its base ; the next, which is nearly as 

 large and more strongly hooked forward, is very acute and has one 

 or two small basal spinules ; the next (or second behind the orbitals) 

 is larger and swollen at base, strongly hooked forward and acute at 

 tip, and bears an acute spinule on its anterior base, and a cluster of 

 about three small tubercles on the swollen upper side of its base ; 

 sometimes it appears bifid at base. The next spine in front is usu- 

 ally blunt and tuberculiform, with one or two smaller rounded tuber- 

 cles on its swollen base, or the two larger tubercles maybe subequal. 

 Below the latter, on the subhepatic region, there are two large prom- 

 inent, unequal spines near together. An irregular row of smaller 

 spines is situated lower down. 



The orbit is surrounded by six unequal spines, besides the antennal; 

 of these the inner (preorbital) and outer are about equal, tuberculi- 

 form and obtuse ; the two superior are small rounded tubercles. 

 The larger antennal spine, which exceeds the rostrals in length, is 

 acute, with tips curved mediad; the smaller antennal is also acute 

 and about equals the inner orbitals in size and length, and it has a 

 small rounded tubercle or tooth at its outer base. 



The subrostral process is rather broad, a little concave in front, 

 obtuse, and descends nearly perpendicularly from the rostrum. The 

 buccal area has an angular sinus on each side of the front edge. 



The ambulatory legs are covered above with sharp spines, except 

 on the dactyl us ; the spines are in two or three rows. There is also 

 a row of five or six acute spines on the lower anterior border of the 

 merus of the two anterior legs ; two or three spines on the third, 

 and none on the last leg, below. The ambulatory legs are covered 

 above, between the spines, with unequal sharp hairs which are most 

 abundant on the dactyls, which have naked horn-colored tips. 



The chelipeds, especially of the larger males, are unequal, large 

 and strong. In the female they are equal. The merus bears two 

 large, unequal, stout, subacute spines on the front margin, the distal 

 one the longer and more curved ; the upper surface has about ten 

 unequal conical spines irregularly arranged (four or five in younger 

 specimens); the posterior border has a row of about five to seven 

 longer conical, subacute spines, sometimes with a few small one> 

 interpolated. The carpus is large and swollen, punctate, nearly 



