g70 CRUSTACEA, 



f. Nat., 1848, 53, pi. iv.), but in that the finger of the large hand is 

 shorter, and the palm has an emargination below its middle. 



0. nitida, Dana, Proc. Amer. Acad. Sci., ii. 204. 



Figures 6 a to d, Plate 58, represent parts of a female, which may 

 possibly be female of the nitida, judging from the size and number of 

 the setae of the posterior legs. Fig. a, part of the anterior legs, the 

 extremity mutilated ; b, second pair ; c, extremity of hand of second 

 pair ; d, extremity of leg of sixth pair. 



The head in the only specimen in the collections is mutilated. The 

 fifth epimeral is considerably shorter than the fourth. The setae of 

 the six posterior legs are very short; on the fifth joint of the sixth 

 pair of legs there are five sets of setae on the under side, hardly one- 

 third as long as the diameter of the joint, and three sets (besides the 

 apical) on the upper side, still smaller. The tarsus has below towards 

 apex a setule, as in the nitida. The fourth joint is closely like that 

 of the nitida in the number and size of the setae (compare figures 5/ 

 and 6 d) . The second pair of legs has the hand subspatulate, the upper 

 and under sides nearly parallel, the minute finger marginal, lying 

 longitudinally, and not reaching to apex, the scabrous surface covering 

 nearly half the whole width of the hand, and, as usual, some hairs 

 near its upper limit. This scabrous surface under a high magnifier is 

 minute hirsute. The fourth joint or carpus is strongly arcuate below, 

 and has a rather broad scabrous surface upon its lower part, like the 

 hand. The preceding joint has the lower apex projecting and rounded, 

 and scabrous, with minute hairs under a magnifier, like the hand. 

 The third joint of the first pair of legs has a low angle below near 

 middle. 



Orchestia serrulata. 



Maris : — Bpimerce sat magnce, quintal antich quartis nan angustiores. 

 Antennae 2dw ferme dimidvi corporis longitudine ; flagello vix longiore 

 quam basis, articulis non oblongis, setis fere obsoletis. Antennos lma? 

 dimidio basis inferiorum vix longiores, flagello 7-S-articulato. Pedes 

 lmi parvuli, rnanu subtriangulatd, paulo oblongd, apice latiore, trans- 



