AMPHIPODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. A491 
the much longer and more slender antennz and in the greater depth of the cleft in the 
telson ; the eye is rather small, oval, or very slight reniform. These specimens are 
therefore somewhat different from the specimens from Kerguelen Island described by 
ST#BBING in the Challenger Reports. I think, however, that CHEvREUX is right in 
considering the two specimens examined by him as male and female of the same 
species, for, in addition to the female specimens of which I have spoken above, I have 
one specimen from Station 325 which by the character of the antenne is almost 
certainly a male, and it agrees very closely with the form described by CHEVREUX as 
the male. It has the teeth at the end of the antennal joints a little longer than is 
shown in his figures, but they are arranged in the same way, and the difference in 
degree is probably due to age. ‘This specimen, like his, has the eyes large, oval, and, 
in the spirit specimen, of a reddish-brown colour. I have carefully compared it with 
the full description given by Sreppina of the Challenger specimens, and it agrees 
minutely in everything except that the telson is less deeply cut. My specimen is, 
however, about 12 mm. long, while his is only 7°5 and was probably immature. This 
seems to be confirmed by the fact that the antenne in it are not modified in the special 
way described by CoEvreux. In the young male we would naturally expect to find 
the telson more like that of the female. WaLkeEr also has stated that the cleft in the 
telson becomes shallower in older forms. 
From the resemblance of my specimens to those described by CHEVREUX, and of 
the male to Sressine’s, I cannot help coming to the conclusion that H. laticarpus 
must be specifically identical with E. antarcticus. 
To this species must, I think, be added the forms referred by WaLkER to 
E. propinquus. I have been fortunately able to examine two specimens obtained by 
the Nimrod in the same locality as WaLkeEr’s specimens, and I cannot find sufficient 
differences to separate them from the Scotia specimens. They are 7°5 mm. long, and 
appear to be males, having the antenne short and provided with calceoli; the eyes are 
nearly round, of moderate size, and the telson has the cleft deeper—nearly as deep as 
in the form figured by CHEVREUX as the female. The other characters agree very closely, 
and the points of difference noted are probably due to age. The back of the pleon and 
of the posterior portion of the person is somewhat scabrous. 
STEBBING has given the apparent absence of calceoli as one of the characters of 
L. antarcticus, but I expect they will, as in so many other species, be found to be 
normally present in fully mature males. They are certainly present in my Nimrod 
specimens, though, as stated above, these specimens may be more or less immature ; the 
calceoli are, however, extremely delicate, and appear much more elongated than is 
usually the case, and a character that is much more easily observed is the downward 
projection of every second joint of the flagellum as described and figured by CHivREvx. 
The male specimen from Station 325 is not in a sufliciently good state of preservation 
(having apparently been partially dried) to show the calceoli, but the antennz show the 
other modifications of the male. WaLker makes no mention of calceoli in his speci-_ 
