■!!)4 TAdP: sK(i(;si;l':i;(i 



at the middle. E n d o p o d i t e: In a few cases five ventral bristles were observed on the 

 first joint; from one to three of these bristles have no wreaths of secondar)- bristles; the bristles 

 on the anterior side of the second joint are like those in the female, but have no long secondary 

 bristles. The bristles of the end joint are somewhat shorter and weaker than those of the female; 

 the proportion between the length of the anterior side of the second endopodite joint and the 

 length of the longest claw is in the female about 28 : 28, and in the male about 28 : 24; the middle 

 claws are finely pectinated. The pilosity is the same as in the female. 



Maxilla: — P r o t o p o d i t e: The first endite has nine or ten bristles. E n d o- 

 ]) o d i t e: The first joint has four bristles postero-distally. Tlie end joint had on one specimen 

 only three a-bristles on the maxilla of one side, otherwise there were four as in the female. Apart 

 from this it is equipped with bristles in quite the same way as the female. The proportion between 

 the bristles is sometimes about the same as in the female, but it is subject to variation. The 

 bristles of the protopodite and the exopodite, like those on the first endopodite joint, are furnished 

 with long, soft hairs either at the middle or along the greater part of their length. Some of the 

 bristles on the end joint of the endopodite may be sparsely furnished with soft hairs too. 

 Pilosity: The first endopodite joint has very abimdant and rather long hairs on the outside; 

 on the protopodite and the end joint of the endoyxxlitc there are also groups of short, fine hairs 

 to be observed. 



Fifth limb (fig. 15) : — Pro t o p o d i t e: The three endites generally have the 

 same number of bristles as in the corresponding 2)rocesses in the female, though they sometimes 

 have one or a few bristles less. E x o p o d i t e: The d-bristle on the second joint sometimes 

 seems to be missing; the inner lobe of the third joint sometimes has four bristles; apart from this 

 the equipment of bristles is similar to that of the female. The two bristles on the outer lobe 

 of the third joint are somewhat larger than in the female and have very abundant 

 long hairs. The outer of the six bristles on the fourth joint is often considerably longer 

 than the other bristles on this joint and is often bare. The relative length and the pilosity 

 of the bristles of this limb are subject to variation. Pilosity: Large j^arts of this limb 

 tiave groups of short, fine hairs. 



Sixth limb: — The epipodial appendage seems in most cases to be 

 represented by only three short bristles. 



Seventh limb: — This is somewhat shorter than in the female; in specimens witii 

 shells ai)out 3 mm. long it was about 1,4 to l.d nun. long. The secondary spines on tiie cleaning 

 bristles proximally of the bells are more weakly developed than in the female or are quite absent. 

 The end comb has the same or a slightly smaller number of teeth, which are, however, exceedingly 

 weak, often arranged somewhat irregularly; their basal spines and wing-like processes are very 

 weakly or not at all developed. The cavity situated dorsally of the end comb is often more 

 or less compressed. The chitinous pegs on the dorsal edge of this cavity are in most cases some- 

 what fewer than in the female. It is probal)le that th(> end conili in ihis sex is not used as 

 a cleaning organ in tlic real nu>aning of the term. 



Penis (fig. ()): — One distal branch has near the base a somewhat bent and rather 

 stronglv chitinizcd peg-like process. DistalJy on the two distal branches there are in most 



