Zoogeographical Investigations in Southern Greenland. 279 
on account of the small size of the specimen. In ant. 2, the flagellum 
has 49 joints (Sars “about 60”) furnished with calceoli; in the case of 
the distal portion, however, only on every alternate joint. 
Pi—p7 agree very well with Sars’ figures, here also, however, 
there are some few small points of difference. The 1. joint of pl is more 
Fig. 19. Pseudalibrotus Nanseni Nr. 1 (3). 
rounded at the anterior corner than shown by Sars, but the 6. joint 
is of the same shape as there, the lower (posterior) corner being less 
obliquely cut off than in other species. The 1. joint in p2 is somewhat 
broader than stated by Sars, and the same applies to the 1. joint in p3—p4. 
P5—p7 also agree very well with Sars’ figure, but in p6, the 4. joint 
especially is not a little stronger. The uropoda exhibit various differen- 
ces in the arrangement of the spines, this is most distinctly shown 
in urop. 3, where there are no ciliated setae on the inner ramus 
