244 LEON J. COLE, 



Of the 11 specimeDS mentioned 6 are females, 3 are males, and 

 2, whose sex is undeterminable, are immature though of nearly füll size. 



In the description of the female there is little to be added to 

 the excellent description given by Hoek, except that, as raight be ex- 

 pected, there is some Variation to be found in the number of spines 

 on the various joints of the legs. Another raore important Variation 

 is in the matter of the first pair of appendages (the so-called "man- 

 dibles", "antennae", or "chelifori"), which Hoek found to be entirely 

 wanting. This is the case in 4 of the females which I have examined, 

 but in the other 2 they are represented by rudiments (Plate 13, 

 Fig. 1 /), which is also the case in two of the three males and in 

 one of the immature specimens. Xone of these females is as large 

 as that of the Challenger collection, the measurements of the largest 

 averaging only about 80 7o of those given in that report. That they 

 are mature, however, is evidenced by the fact that they contain füll sized 

 ovarian eggs. The genital openings are not placed exactly "ventrally 

 near the distal extremity of the second Joint of the leg" as Hoek 

 supposed, but are oval openings situated about in the middle of the 

 Joint, just posterior to the mid- ventral liue. At the distal end of the 

 same Joint of each of the 4 pairs of legs there is situated ventro- 

 laterally on the anterior side of the leg a small circular opening from 

 which a duct can be seen leading inward and dorsally. There have 

 never, to my knowledge, been glands described as occurring in this 

 Position, but it is possible that they correspond in function to the 

 glands occurring in the 4. Joint of the leg in the males of some genera, 

 which are supposed to secrete the cement that holds the eggs together 

 in masses. 



The males (Fig. 2) are noticeably smaller than the females, but in 

 general a description of the latter would apply to the former, the 

 most raarked dilference being found in the ovigerous legs. The de- 

 scription given of this appendage in the female is as follows: "The 

 first Joint of the ovigerous leg is very small, the second and third 

 are a little longer, the fourth and fifth are the longest, the sixth is 

 Short again, the seventh, eighth, ninth, and tenth are about the same 

 length, and gradually diminish sligtly in breadth. The first five joints 

 are nearly smooth, towards the distal extrenoity the sixth shows some 

 Short and not very strong spines, whereas the four following joints 

 are furnished in the same place with much stronger and slightly 

 curved spines. Towards the end of the tenth Joint there are a con- 

 siderable number of these spines, while a claw and true denticulate 



