22 Alf Wollebæk. [No. 18 
genera of the genus Axius. If we compare Trysom's species 
Eiconaxius erassipes (and coronatus) with Borraparmr's generic 
detinitions we shall almost feel compelled to assign them either to 
Aæiopsis, Borr. or to Calocaris Bern: though it will not do to 
refer them too hastily to either of these genera. Thus according 
to the definitions given by Borrapame for the genera Scytoleptus 
and Axius (with their sub-genera) Try»om's species at once dis- 
sociate themselves from these owing to the fact that they have å 
suture on the exopodite of the sixth pair of pleopods, whereas the 
suture is not present in the said two genera. (*The genus Azxius 
as thus defined contains all the Axudae whose last limb has no 
suture with the exception of Scytoleptus”). Since SpznceE Barz's 
genus Hiconazxius is assigned to å sub-genus of Axius we cannot, 
while following BOrrADAILE, use the designation Hiconazxius for 
TryBom's species. 
There remain then the genera Axiopsis Borr. and Calocaris 
Bert. From the first of these genera Try»om's species dissociate 
themselves by having colourless eyes without any dark pigment 
whatsoever, whereas in Axiopsis we find *the eyes well pigmented” 
(Borr.). From the other genus it differs in that it is without å 
carina along the median line of the carapace behind "the cerviceal 
groove.” On comparing Caloecaris and UC. crassipes we find that 
the podobranchiae of the former are much more developed than 
those of the latter. How 0. crassipes compares with Axiopsis in 
this respect I have not been able to ascertain owing to å want of 
material of this genus. 
For the same reason I would not venture to propose originating 
any new genus for Try»om's species, though according to Borra- 
DAILE'$ proposed classification it would seem as if the two species 
should at least be assigned to a separate sub-genus: in whieh ease 
it would be either under Axtopsis or Calocaris. If placed under 
the former it would be necessary in BORRADAILE'S generic de- 
finition, after the words "the eyes well pigmented,” to insert 
the words *or without pigment”. In other respects the veneric 
definition would be quite suitable for the two species described by 
TRrYBOM. 
Without however being able at present, owing to å want of 
material of Axiopsis, to decide definitely to which of the two genera 
this species ought most properly to be assigned, I suggest the name 
Calocarides to be placed provisionally as a subgenus of Calocaris 
