Zoogeographical Investigations in Southern Greenland. 257 
In the uropoda, the inner ramus is short, and without bristles on the 
edge. The telson is slightly concave at the distal end, and is here twice 
as broad as at its base. The posterior edge is armed with 7 pairs of 
DIN 
= 
pP: 
7-4. 
Fig. 6. Spirontocaris-larva Nr. 2, 1. stage. 
spines in all (including the corners), the middle pair, however, being 
quite small, the third from the end being the longest. Between the 
bristles are fine setae. There is a small spine on either side a little in 
front of the corner. 
Intermediate stages. The youngest and oldest stages are con- 
nected by a number of intermediate forms, which can, however, hardly 
be separated into distinct stages, as their characters appear partly to 
overlap. Some of them correspond more or less to my descriptions 
in the “Danmark” and “Tjalfe” Exped.; in all, however, the spines on 
the telson are smaller than there described. 
Oldest stage (Fig. 7). Length 8 mm. (one specimen, however, 
from St. 64, measured 10—11 mm.). Antennae almost as in youngest 
stage, but peduncle of ant. 1 now with 3 joints, while in ant. 2, the 
peduncle is now 1% times as long as the squama, and has developed 
two distinct articulations at its base. The maxillipedes are of almost 
the same shape as in the youngest stage. All pereiopoda have now 
become articulated, and there is also an exopodite on p3. Gills at the 
base of pl—p5. The pleopoda are now larger, and the branches in arti- 
culate connection with the peduncle, natatory setae, however, are lacking, 
save for a single one at the point of the exopodite. The uropoda about 
the same length as the telson, and there are also bristles on the endo- 
podite. The telson has almost parallel sides, its length is between 
3 and 4 times its breadth; in most of the specimens it is somewhat 
broader than in the one shown in the figure. There are 6 pair of 
bristles on the posterior edge (including corners) and two spines on 
either side. 
и. 17 
