14 Alf Wollebæk:. [No. 12 
2nd Antennae. SPeNcGE BAaTE remarks about Kiconaxius 
acutifrons SP. B., in the report of the Challenger Expedition (vol. 
XXIV, page 41) that the scaphocerite is "free from hairs or eilia”. 
In OC. erassipes both seaphocerite and stylocerite are furnished with 
several scatiered small setae in the neighbourhood of their tips: 
and from Try»om's drawing we can see that the same is the case 
with the seaphocerite of UC. coronatus. Spence Batz has not given 
us å detailed drawing of the pedunele's stylocerite and seaphocerite 
in the case of any of the FHiconaxis-species, though from the 
habitus-figures of E. acutifrons and kermadeci in the CHALLENGER'S 
Expedition (Vol. XXIV, Pl. V, figs. 2 and 3) it would appear that 
the stylocerite in these two species is considerably longer than it 
is in either UC. coronatus or UC. crassipes. 
Mandibles. Judging from Spence Bartek's drawings and 
deseription of Paraxws altus and Hicomaxius acutifrons, the mand- 
ibles of the species under discussion bear a closer resemblance to 
those of the former than to those of the latter. 
Ist Maxilla. Spence Bare mentions nothing about these 
oral parts in the case of either Ficomaxius or Paraxius. In Calo- 
caris Macandreae Bern (we are not in possession of material of more 
elosely allied species) one can also discern three joints in the outer 
branceh of the I1st maxilla, but the artieulation between the 2nd and 
3rd joint is far from being so well defined as in the case of U. cras- 
sipes. At the tip of its distal joint UC. Macandreae has three setae: 
otherwise the hair-equipment of the branch is practically the same 
as in the case of UC. crassipes. 
2nd Maxilla. This maxilla in Calocarides crassipes bears a elose 
resemblancee to the same limb in Calocaris Macandreae. "There is 
however a certain difference in the lash on the 3rd braneh which 
in Calocaris is not so distinetly divided off from the remaining 
portion as it is in UO. crassipes, tapers more gradually towards the 
tip, and is furnished with a considerable number of long setae. 
1st Maxilliped. Spence Bare depiets this oral appendage 
in the case of both E. acutifrons and Paraxius altus, but does not 
deseribe it in the text. It would appear however from his small 
and somewhat incomplete drawings (Chall. Ex. Vol. XXIV, PI. V, 
