118 CRUSTACEANS OF THE 



several small teeth, that decrease ia size toAvards the tip, 

 and one of which, on the middle of the finger, is the lar- 

 gest; the teeth of the dactylus are less prominent and this 

 finger is strongly curved; the extremities of both fin- 

 gers are pointed. 



The smaller chela of the adult male measures only two 

 thirds the length of the other; the fingers that are almost 

 in contact, are just as long as the palm and the latter 

 is a little less high than long. The transverse finely 

 crenulate lines near the carpal joint extend almost to the 

 middle of the palm and the longitudinal rows of puncta 

 are faintly grooved. 



In the second male the larger hand measures only two 

 thirds the width of the cephalothorax, the fingers that 

 are just as long as the palm , are in contact with one 

 another and the dactylus is not yet arcuate; they are not 

 grooved, but marked with longitudinal rows of puncta. 

 The fingers of the smaller chela are slightly grooved. 



In the female the anterior legs are equal or subequal. 



In the ova-bearing specimen the left chela is very slightly 

 larger than the right. The fingers are in contact, feebly 

 toothed and more or less distinctly longitudinally grooved. 



The ambulatory legs are of moderate length (Fig. 13). 

 So are e. g. those of the penultimate pair almost twice as 

 long as the cephalothorax is broad ; the meropodites that 

 bear no tooth at the distal end, are 3-times and the pro- 

 podites a little more than twice as long as broad ; the 

 terminal joints finally are a little longer than the propo- 

 dites. The compressed dactylopodites are straight, only 

 slightly arcuate at the horny tips and stout; their edges 

 are armed each with 6 or 7 spinules. The meropodites 

 are marked on their outer surface with transverse rugo- 

 sities, except those of the last pair that are only finely 

 punctate. Six or seven spinules are observed along the 

 posterior margin of the propodites. These legs carry on 

 their margins, especially of the three terminal joints, ex- 

 tremely short, setose hairs. 



Notes from the Leydeii Museum, Vol. XA.I. 



