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TAOtE SKOC.SBERG 



H a n s e n'". Tlie relative length of these bristles varies somewhat, however. Tlie b-bristle 

 is short-haired; both the c-bristles usually have short hairs, on the right mandible of tlie specimen 

 from M/S ,,A r m a u e r H a n s e n" the longest of them was, however, fitted with long 

 secondary bristles in the middle; the shorter d-bristle also usually has long secondary bristles 

 in the middle, often, however rather few in number, in the second specimen from S/S ,,A n t- 

 a r c t i c" it was even short-haired. The three dorsal bristles are subequal, about as long as 

 or somewhat shorter than the dorsal side of this joint; they have short hairs or are almost bare, 

 the proximal one is fixed somewhat distally of half the length of the joint. — The e x o p o- 

 d i t e is somewhat longer than the dorsal side of the first endopodite joint. < )f its two bristles 

 the proximal one is about as long as the dorsal bristles of the second protopodite joint, the 

 distal one attains to only about half the length of the exopodite; both have short hairs or are 

 almost naked. — E n d o p o d i t e: The four ventral bristles of the first joint have a comparative 

 length that is typical for this sub-family; the longest one does not quite attain to the length 

 of the posterior side of the second endopodite joint, furnished with irregular wreaths of long 

 secondary bristles, with short hairs distally, the other three are short-haired. The second 

 joint: This has a thick mass of bristles of various kinds along almost the whole anterior side. 

 The number and situation of the bristles seem to vary rather considerably; firstly there are 

 20 — 30 more or less long bristles with sparse short hairs, about the same as in Th. Scott's figure 

 mentioned above, secondly a very large number of cleaning bristles, either arranged in more 

 or less distinct rows running slantingly upwards and forwards, or at least partly almost quite 

 without regular arrangement; the number of these rows of bristles is difficult to decide with 

 certainty, as they are situated very close together, yet it seems to vary between fifteen and 

 a little over twenty. The posterior bristles in these rows are rather short, the distal two thirds 

 of them are finely pectinated, about the same type as shown in fig. 21 adjoining; the pectination 

 on these bristles is so fine that it can only be observed with difficulty with Reichert's ok. 4, 

 LeH'z' immers. ^. In front of these bristles, thus nearer the anterior edge of the joint, the 

 cleaning bristles are somewhat longer and of somewhat different types; a number of them have 

 extremely fine pectination on their distal half or third; a number are very powerfully pectinated 

 on their distal third or quarter; the stalk of these bristles is often furnished with a more or 

 less large number of rather powerful spines proximally of the pectinated part (the types shown in 

 figs. 22 and 23); spines may also occur on the stalk of the short cleaning bristles. Transitional 

 forms between these different cleaning bristles are, however, to be observed. On the distal 

 half of the posterior side of this joint there are three to five rather short, almost subequal, 

 moderately strong, naked bristles (fig. 9), situated at about an equal distance from each other. 

 J)istally of these there are two spine-shaped bristles, situated next to each other, most frequently 

 somewhat shorter than the former but very much stronger, in most cases about as long and as 

 strong as each other; sometimes the medial one is shorter, though rather slightly so. Of 

 the seven bristles of the little end joint (fig. 9) the medial of the two middle ones is comparatively 

 long and powerful, varying somewhat in its comparative length, most frequently about as long 

 as half the posterior side of the second endopodite joint or somewhat shorter; the other of 

 the two middle bristles is somewhat weaker and only about half the length of the former 



