Zoogeographical Investigations in Southern Greenland. 281 
ted than in the foregoing specimen. The postero-lateral corner of the 
3. epimeral plate in the metasome is of almost the same shape as shown 
by Sars, being less drawn out at the point than the foregoing. 
The antennae are somewhat shorter than in the $ (specimen Nr. 
1) and calceoli are of course altogether absent. In ant. 1, the accessory 
flagellum has 4 joints, the flagellum 33. In ant. 2, the flagellum has 36 
joints. In pl the 1. joint is very strongly curved in front, far more so 
than in Sars’ and the foregoing specimen. The distal edge of the 6. 
472 x 
Fig. 21. Pseudalibrotus Nanseni, Nr. 2. 
joint is also more obliquely cut. P2 is more slender that in the & and 
the 1. joint slightly broader towards the point. With regard to p3—p4 
nothing particular to remark, these answering entirely to the corre- 
sponding legs in the g. In på on the other hand, the 3.—7. joints are 
somewhat shorter and the dactylus on p5—p6 and especially p7 di- 
stinctly shorter and heavier. In p6—p7 also, the 3.—7. joints are slightly 
shorter than in the 4 A remarkable feature is the slight spinous 
arrangement on anterior edge of the 6. joint in p7. Some of the 
oral parts are here drawn, to show the arrangement of spines; they 
agree, however, entirely with Sars’ figure of P. Nanseni. The uropoda 
are slightly heavier, but with fewer spines than in the 4. The fact 
of there being no ciliated setae on urop. 3, might possibly be taken 
