29 



on its outer margin two small spinules, behind one another, one at the distal end near the 

 acoustic groove, the other somewhat behind it; in Fig. iC of the Challenger Report this joint 

 appears not at all concave and one observes on it, instead of two, five spinules. The 2 nd 

 joint is shorter than the i st , unarmed and broadens somewhat distally, the 3 rd joint is shorter 

 than the 2 nd and its inner margin terminates distally into a sharp tooth. In Fig. 1 C of the 

 Challenger Report, however, which for the rest does not agree with Fig. 1, the 3 rd joint appears 

 longer than the 2 nd and quite unarmed. The antennular scale, the spiniform tip of which is 

 turned upward, reaches slightly beyond the distal end of the peduncle, as in Fig. 1 of the 

 Challenger Report, while it appears much shorter in Fig. 1 C. The antennal peduncle reaches 

 by its terminal joint beyond that of the inner antennae; the elongate triangular scaphocerite 

 reaches in the male to the middle of the terminal joint, in the female a little farther. The 

 3 ,d joint, coalesced with the 2 nd , is armed internally with a strong acute tooth ; the penultimate 

 joint which is distinctly longer and broader than the terminal one, carries a sharp strong tooth 

 at the far end of its inner margin and a smaller one occurs at the inner distal end of the last 

 joint that appears twice as long as broad. When Fig. 4 is compared with Fig. 1 C of the 

 Challenger Report, the latter appears at once inaccurate. 



In the male the legs of the i st pair are just as long as the body, in the female a little 

 longer. They are somewhat less slender than in Fig. 1 of the Challenger Report and in both 

 specimens the fingers are distinctly longer than the palm. The wavy upper margin of the 

 merus which is finely spinulose along its whole length, carries a curved spiniform tooth at the 

 far end ; the straight lower margin appears also very finely serrated, when examined under a 

 magnifying glass. The carpus that thickens more regularly toward the distal end than in the 

 figure of the Challenger Report, has its upper border grooved ; both sides of this groove are 

 denticulate and there is a stronger spine at the far end of the outer border. A small spinule 

 occurs at the distal end of the lower border on the outer side and there is a blunt compressed 

 tooth internally. The nearly straight, upper border of the palm is covered with numerous small 

 teeth, the convex lower is grooved and both edges of this groove are spinulose; the fingers 

 are distinctly longer than the palm and the upper border of the dactylus is finely serrated 

 at its base. 



As regards the other legs I must remark that the ischium and the merus are covered 

 in the male on their lower surface with acute granules, disposed more or less distinctly in longi- 

 tudinal rows, especially those of the 3 rd and 4* pair; in the female these granules are much 

 less conspicuous. The 5 th pair of legs end in the male in a single dactylus, but in the female 

 in a very small chela. 



Measurements in millimeters. 



Length of the body in the middle line ') 



„ „ carapace „ „ „ ») 



„ abdomen , . „ 



1) The strong median tooth on the frontal vvall of the carapace is not included. 



