470 PROFESSOR CHARLES CHILTON ON THE 
Tmetonyx stebbingi is now known from South Victoria Land and from Coats Land, 
and I have recorded a form from the sub-Antarctic islands of New Zealand which 
appears to belong to this species, but is much smaller, has well-developed eyes, and is 
darkly pigmented (19094, p. 618). 
Genus ORCHOMENELLA. 
Orchomenella pinguides Walker. 
Orchomenella pinguides Walker 1903a, p. 46, pl. viii. figs. 24-30. 
ap 5 Pet Od np: LS: 
South Orkneys, Scotia Bay, Station 325. 2nd January 1904. Several specimens. 
These specimens undoubtedly belong to this species, as on comparison I find that 
they agree closely with co-types of WaLkER’s species kindly sent me by Dr Catman of 
the British Museum. They show also a pretty close resemblance to Chewimedon 
dentemanus Chevreux, but differ in having the eyes not black (in spirit specimens), 
and in having the first gnathopod less strongly developed and the palm not concave ; 
the third segment of the pleon has the posterior angle rather more rounded, and the 
telson appears slightly more elongated than in CHEvREUx’s species. I have also been ~ 
able to examine specimens of O. pinguides from South Victoria Land collected by the 
Nimrod in 1908, and can detect no difference between them and the South Orkneys 
specimens. In most of the Nimrod specimens the eye is colourless in spirit and 
appears to have been red in the living animal; some of the specimens were labelled 
‘““Red Amphipods,” and the specimens preserved in formalin still show the red colour 
of the eyes and a slight pinkish tinge of the whole body. On the other hand, WALKER 
in describing his species says: “‘ Eyes moderately large, dark, oval, expanded below.” 
There thus appears to be some variation in the eyes of Orchomenella pinguides, for in 
the co-types from the British Museum one specimen has an eye still fairly darkly 
coloured, but in the others it is pale, as in the South Orkneys specimens, and I have 
noticed also some variation in the Namrod specimens. 
Orchomenella macronyx Chevreux. 
Orchomenella macronyx Chevreux 1905, p. 161, fig. 2. 
: i » 19068, p. 8, figs. 5-7. 
South Orkneys, Scotia Bay, Station 325. May 1903. Two specimens, 4°5 mm. 
long. 
These two small specimens on the whole agree well with CHEVREUx’s description, 
especially in the shape of the last segment of the pleon and the first of the urus. 
The eye is rather narrower and less oval, and the first gnathopod appears to have a 
slightly more transverse palm, against which the finger fits closely without projecting 
beyond it. The telson is concave above. 
