218 Prof. J. 1{. Henderson on a 



and reduced ou tlie eye-stalks; the eyes are relatively 

 larjje. 



The elielipodes and ambulatory legs are relatively better 

 developed than in the female, but the spinules on the meral 

 and carpal joints are almost obsolete ; a few very minute 

 spinules are visible on the upper surface of the palm. The 

 propodus of the clielipedes is slightly wider than the carpus; 

 the fingers are incurved^ with acute apices, and are about 

 equal in length to the palmar portion of the pro[)()dus. The 

 ambulatory dactyli are strongly incurved, doubtless for 

 attachment to the female, and their horny apices are very 

 slender and acute ; they are more than halt" the length of the 

 re'atively stout propodi. 



The arrangement of the antennules, antennae, eyes, and 

 external maxillipedes, seen from below, is similar to that in 

 the female. The basal antennnlar joint is somewliat laterally 

 compressed, and, when viewed from the side, exhibits five or 

 more terminal spinules. 



The sternal plastron is somewhat similar in outline to that 

 of the female. The male sexual openings are seen on the 

 small sternal pieces belonging to the last pair of legs, and 

 these pieces, as in the ease of the female, do not meet together 

 in the middle line ; no grooves are visible in the neighbour- 

 hood of the openings. 



All seven abdominal segments (including the telson) are 

 distinct, and they gradually diminish in width from the 

 third backwards to the telson, so that the general outline of 

 the abdomen is triangular. The first abdominal segment, 

 which is di^vtinctly narrower than the hind margin of the 

 carapace, and a portion of the second segment, are alone 

 vitsible from above. Both pairs of sexual appendages are 

 well developed, and the first pair extend as far forwards as 

 the sternal ])ieces of the first pair of ambulatory legs. 



The average total length is about I'Zo mm. 



The species described above differs in the following im- 

 portant respects from C. coraU'wdytes, Heller. In Heller's 

 species, which is of much larger size, the female measuring 

 about 17*5 mm. in total length, and the male about 6*5 mm., 

 the entire body is narrower ; the regions of the carapace are 

 more distinctly circumscribed, and the frontal loI)es more 

 prominent, with acutcr apices. The chelipcdcs are more 

 slender, and are shorter than the first pair of walking-legs ; 

 the propodal joint of the chelipcdcs is very short, and, 

 judging from Heller's figure, is apparently not larger than 

 the carpus ; the last pair of legs are longer than the penulti- 

 mate pair. The male abdomen is narrow and linear, with 

 the })r()ximal segments not wider than the distal ones. The 



