studies oil niaiinc Oslrucods 2U7 



one or somewhat shorter. Of the two anterior ones, both rather weak, the Lateral one 

 is about half, the medial one about a (juarter of the length of the main claw. Of the 

 three posterior ones, all rather weak, one is somewhat shorter than the main claw, one 

 about half the length of the former, and the third, as usual in this sub-family, almost com- 

 jjletely reduced. All the bristles of the end joint are quite smooth. Pilosity: The second 

 protopodite joint has numerous groups of short, stiff, fine hairs; the other joints have only 

 sparse hairs or are quite smooth. 



Maxilla: — Protopodite: The first enditc has twelve powerful, subequal 

 bristles of moderate length, all furnished with a number of wreaths of long, stiff secondary 

 bristles. About half these bristles have distally a moderate number of secondary teeth, usually 

 rather coarse, and a simple and powerful point; the remainder, in most cases somewhat weaker 

 than the former ones, are strongly pectinated distally right out to the points, so that they appear 

 more or less strikingly three-pointed distally. In a few cases thirteen bristles were observed on 

 this process. The second endite (fig. 11) has seven distal bristles, all rather ^lowerful, of moderate 

 length, subequal except for the fifth and sixth, reckoning from outside, which are most frequently 

 somewhat shorter than the rest. They all have a somewhat varying number of wreaths of long, 

 stiff secondary bristles; distally of these secondary bristles bristle no. 5 has only a few secondary 

 teeth, no. 6 is rather finely pectinated distally and the rest are more or less coarsely pectinated 

 distally. The third endite (fig. 12) has nine or ten distal bristles, all fiitmoWd with a more 

 or less large number of irregular wreaths of long, stiff secondary bristles. Three to four of the 

 most distally situated of these bristles are considerably shoc'ter than the rest and are usually 

 furnished distally with only a few secondary teeth; Vue others are of moderate length, subequal 

 — the outer one being, however, somewh.ut longer than the rest — and distally they are either 

 rather finely pectinated like the two, outer ones and the innermost one or else coarsely pectinated. 

 The proximal bristle on this endite is sparsely furnished with short hairs and is about as long 

 as the outside of this process. The bristle situated distally of the epipodial appendage is about 

 as long as the first endopodite joint. Of the three bristles on the boundary between the basale 

 and the first endopodite joint the one situated near the exopodite is of about the same length 

 and type as the two distal bristles on the exopodite, the two others are short, about half as long 

 as the first endopodite joint or somewhat shorter, and have short hairs or are quite naked. In 

 one case two bvistles were observed instead of one on the anterior edge of the endopodite. 

 Exopoditpj: The two distal bristles are usually subequal and somewhat longer than the 

 exopodite; th-e remaining bristle is about half the length of the former ones; they all have long, 

 stiff secondary bristles and distally thoy have short hairs. On one of the ,,A n t a r c t i c" 

 specimens (-the other specimen brought home by this expedition was defective with regard 

 to this character) one of the two distal bristles had short hairs. Endopodite: First joint: 

 Distally (fiff 10) this has four (in one case on one maxilla there were only three, in anotlier case 

 five) anterior and four posterior bristles. The former are moderately long and strong, in most 

 cases diminishing somewhat in length according as they are situated more posteriorly; all arc 

 sparsely f.umished with short hairs. The four posterior ones decrease rather rapidly in length 

 and strength according as they are situated more anteriorly; they are all sparsely but coarsely 



