16 Te Mjollebel [No. 12 
of å multartieulated lash. On the other hand the seven-jointed 
pedunele of UC. crassipes has more resemblance to the same limb of 
E. acutifrons [if we may judge from SrEncz Bartz's drawing] than 
to that of Parazxius altus, especially in so far as the relative lengths 
of the joints are concerned. 
3rd Maxilliped. Spenor BaTtE remarks that this pair of 
gnathopods of E. acutifrons: *corresponds much with that of Pa- 
raxius, but carries å shorter and less conspicuous basecphysis, which 
does not terminate in å multartieulate lash.” With regard to his 
remaining two species of FHiconaxius, SPENCE BaTE does not say 
whether or not they have inarticulate exognaths on this pair of 
gnathopods. The third pair of gnathopods of U. erassipes have å 
fairly close resemblance to the corresponding limbs of U. coronatus, 
as depicted by Trysom. Thus both are distinguished from E. acuti- 
froms SP. B. by having an exognath with a multarticulate lash: 
which not only in this respect, but also by virtue of its length in 
proportion to the remaining joints of the enathopod, bears å pretty 
close resemblance to the same limb of Paraxwus altus SP. B.,— 
judging from SPENCE BaTE's drawing and description of this species 
in the Report of the Challenger Expedition. 
So far as we can gather from STRAHL's description?) this gnatho- 
pod in Axius Plectorhynchus has also an ecphysis with å long lash. 
STrRaAHL says (loe. cit.): ,Die åusseren Kauftsse sind fussformig 
aussen neben ihnen findet sich ein Palp mit langer Geissel.* 
The relative lengths of the joints of this gnathopod, their setose 
armature, and the spinose armature of meros, are identical in all 
essentials in these three species U. erassipes, C. coronatus and 
Paraxius altus: whereas on the contrary SPENCE BaTE'S species 
E. acutifroms shows åa quite censiderable difference in these respects 
as well. From Spence BartkE's drawing of this gnathopod of E. 
acutifrons [he says nothing specially about it in the text] it would 
seem as if meros had no spinose armature similar to that of OC. 
crassipes, UC. coronatus and Paraxus altus. 
Branchiae. 0. erassipes differs from FHiconaæius acutifrons 
Sp. B., in that it has on its 2nd maxilliped å podobranchia and an 
1) UC. STRAHL: ,Einige neue Thalassinen" u. s. w. Monatsberichten der 
Königl. Akademie der Wissensch. zu Berlin. 1861. 
