22 Bulletin Vanderhilt Marine Museum, Vol. V 



round slaty black spot on the outer surface of the propodus, nearly 

 midway its length and about opposite the first black band of the 

 carapace, when the claw is retracted; another large, roundish black 

 spot occurs on the distal outer surface of the propodus, opposite the 

 third black band of the carapace; the distal border of the ischium 

 has also a black spot, in line with these ; there are two blackish spots 

 on the blade of the dactyl. The external maxillipeds and second and 

 third legs are also marked with slaty grayish spots, that have the 

 effect of transverse bands, when these appendages are retracted. On 

 the first and second exposed thoracic segments there are two trans- 

 verse narrow bands of blue black, that are closely adjacent to the pos- 

 terior black bands of the carapace; on the anterior of the third free 

 segment there is a narrow black band; behind this are eight broad 

 black transverse bands, each of which occurs across the line of seg- 

 mentation, partly on the posterior margin of one segment and partly 

 on the anterior margin of the adjacent segment; three of these bands 

 thus being on the third, fourth and fifth free thoracic segments ; the 

 remainder being on the abdominal segments. On the pretelsonic seg- 

 ment, in addition to this anterior transverse band, there is a pos- 

 terior curved transverse band, that widens on either side into a black 

 patch that entirely covers the lateral margin of the segment. Ad- 

 jacent to this is another blackish band, across the proximal half of the 

 peduncular joint of the uropod. On the telson there are three dis- 

 tinct black spots, a median and a pair of lateral spots, all of which 

 are more widely rounded basally and nearly touching at this point, 

 each tapering toward the telsonic margin. On the exopodites of the 

 uropod, there is a big transverse band, a spot, on the distal half of 

 the first joint and proximal half of the second joint and also on the 

 spines ; and distal two-thirds of the endopodite is blackish ; these black 

 spots of the uropoda are approximately in a transverse line with the 

 spots of the telson when the tail-fan is expanded. The black spots 

 of the telson and uropoda are also visible on the ventral surface. The 

 last three thoracic legs have the upper surface of the moral joints 

 blackish, in continuation of the black bands of the related thoracic 

 segments. There are small touches of black on the distal end of the 

 propodi, also of the related shorter rami of these last three pairs of 

 thoracic legs. The antennae appear blackish. 



Both of the large females here recorded from Tahiti, have the 

 same coloring on the telson, consisting of a transverse band, produced 

 in the median area as a black spot extending to the posterior margin 



