Zoogeographical Investigations in Southern Greenland. 263 
the 3. and 4. joint are as yet not separated by articulation. The 
pleopoda are cleft, but not articulated. In the uropoda, the inner ramus 
is very short, and has abt. 6 bristles at its pomt. In some few speci- 
mens there may be a pair of spines over the base of the rostrum. 
Spirontocaris (?) larva Nr. 5 (Fig. 12). 
Bredefjord St. 64, 600 m. w. (23/vi1), 1 spec., 9 m. 
A highly characteristic larva was taken at this station. It is a young 
Mysis stage, there bemg exopodites in pl—p3, and it is easily distin- 
Pros zt rUrR 
ete 
Fig. 12. Spirontocaris(?)-larva Nr. 5. 
guised by the following characters: Rostrum very long, only slightly 
shorter than the carapace, pointed, with three teeth above the base; 
the eye is very large and somewhat flattened; there is a spine above the 
eye, and above and below the 2. ant.; the anterior portion of the lower 
edge is armed with abt. 10 teeth. The abdomen very long and thin, 
with a marked break, which cannot, apparently, be straightened out, 
at the 3. abdominal segment, which is drawn out into something resem- 
bling a carina at the hinder end. There is also a spine on either side 
of the 5. abdominal segment. 
With regard to ant. 1, there is nothing to remark, save that this 
is very slender; the 1. joint of the peduncle has a spine on its lower 
side; the 2. joint is not yet separated from the first. In ant. 2, the fla- 
