AMPHIPODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 467 
Genus CHEIRIMEDON Stebbing, 1888. 
Cheirimedon femoratus (Pfetter). 
Anonyx femoratus Pfeffer, 1888, p. 93, pl. 11. fig. 2. 
Cheirimedon dentimanus Chevreux, 1905, p. 159, and 1906s, p. 2, figs. 1-4. 
South Orkneys, Brown’s Bay, Station 326a. November 1903. Many specimens 
of about 10 mm. in length. 
South Orkneys, Scotia Bay, Station 325; dredge, 9-10 fathoms. May 1903. 
One small specimen. 
South Orkneys, Scotia Bay, Station 325; dredge, 4 fathoms, gravel bottom, 
clumps of weeds ; temperature 29°71. 8rd December 1903. Two specimens. 
These specimens agree minutely with the figures and description given by CHEVREUX, 
and I have been able to compare them with co-types of his species which he has been 
good enough to send me. I have also compared them with a specimen of Anonyx 
femoratus Pfeffer from South Georgia, kindly placed at my disposal by the authorities 
of the Hamburg Museum, and I find it is quite the same as the South Orkneys 
specimens and those from Port Charcot sent to me by Monsieur E. CHEvreux. Pfeffer’s 
description agrees well with C. dentimanus, but his figure shows the telson too broadly 
rounded posteriorly and the cleft too shallow. The figure was, however, made without 
dissecting the specimen. His name has priority by many years. M. CHEVREUX states 
that this species appears to closely resemble C. fougnery Walker from South Victoria 
Land. I have been able to examine co-types of this species from the British Museum, and 
also specimens obtained by the Nimrod Expedition, and find that, though there is consider- 
able resemblance in general structure, C. fougnei differs considerably from C. dentimanus 
in the greater length of the antenne, and also in having the body much less compact, 
and the first gnathopod more slender. 
Genus TrypHosa Boeck, 1871. 
Tryphosa murrayy Walker. 
Tryphosa murrayt Walker 1903, p. 50, pl. ix. figs. 45-51. 
” » oy 907, p., 16 (part). 
Station 411, Coats Land, lat. 74° 1’ S., long. 22° W.; 161 fathoms. Many 
specimens, the largest 22 mm. long. 
After much consideration, I have decided to record these specimens under the name 
given above. I have been able to compare them with the type of Mr Waxxker’s species 
obtained by the Southern Cross Expedition, and the two agree so closely that they 
must be considered specifically identical. The eyes are obsolete, the lateral lobes of the 
head produced and acute or subacute, the hind margin of the third pleon segment straight, 
