DISCOVERY REPORTS 



differentiation of the female pleopods commences, at a carapace length of 10-12 mm., 

 the small endopodite increases in size and becomes two-segmented (Figs. 5^-^), whilst 

 the lobe of the protopodite of the fifth pleopod is slightly reduced (Fig. 5^). The 



a 



I 



f 



s 



Fig. 6. Development of pleopods in Munida subrugosa. 



a. Fifth pleopod, sixth stage, female. e. Fifth pleopod, seventh stage, female. 



/. Fourth pleopod, seventh stage, female. 



a. Third pleopod, seventh stage, female. 



h. Second pleopod, seventh stage, female. 



b. Fourth pleopod, sixth stage, female. 



c. Third pleopod, sixth stage, female. 



d. Second pleopod, sixth stage, female. 

 In each figure the left pleopod is shown. All the figures are to the same scale. 



following stage shows this lobe almost gone (Fig. 5/) and, in the specimen figured, with 

 only a single plumose hair remaining of the dozen or so previously present. A few, 

 short, stiff", non-plumose hairs, the rudiments of the egg-carrying hairs, are present on 

 the two distal segments. The lobes of the pleopods of the fourth abdominal segment 

 (Fig. 5/2) are slightly reduced and egg-carrying hairs appear on the endopodite. The 



