ISOPODA. 63 
The maxille hardly present any distinctive features. 
The maxilliped is normal in character, it is short and thickened towards its straight 
inner border, and on this are two papilliform teeth; distally it carries a few spines. 
The palp is five-jointed, the first three progressively increase in length, the others 
decrease ; the three distal bear rather long setee internally. 
The pereiopoda are not long, the first.is short and stout, adapted as a prehensile 
organ. The basis is the longest joint, the ischium is about two-thirds its length and 
enlarged on its inner margin. The merus is half the length of the ischium and much 
enlarged dorsally and carries two sete; the carpus is a large joint, slightly swollen 
ventrally and provided with spines and setee ; the propodus is shorter, stout and setose 
ventrally ; the dactylus shorter still, with a strong accessory to the terminal claw and a 
curved seta near its extremity. 
. The remainder are distinctly ambulatory in function and are much more slender, 
every joint with the exception of the merus being approximately cylindrical; the merus 
is but slightly enlarged distally. There are but few small setz scattered on these 
appendages, which slightly increase in size from the first pair to the last. 
The first pair of pleopods act as an operculum to the remainder. 
A number of specimens were taken from dredge material inside the 25-fathom 
line. A few individuals at a time were found during the whole of our stay. 
ANTIAS. 
Richardson (12), pp. 16-17. 
This genus is another of those instituted by Miss Richardson for the Isopods 
brought back from the Antarctic by the French Expedition under Dr. Charcot. The 
-species described below is identical with that found on the western side of Graham’s 
Land and was abundant in our Winter Quarters. 
ANTIAS CHARCOTI. 
(Plate IX., fig. 1.) 
Antias charcoti Richardson (12), pp. 17-19. 
Specific characters :— 
Cephalosome with a broad rostrum divided into two rounded setose lobes. A curved spur in 
front of ocular peduncle. 
Both meso- and metasome fringed with long spinous setee. A transverse row of fine setee on four 
segments of the mesosome. 
Uropoda large, biramous. Exopodite straight, endopodite curved. 
The cephalosome is broad, but even including the ocular peduncles it is not quite 
so wide as the first segment of the mesosome. ‘The anterior part is produced into two 
stout rounded tubercles, forming a broad and bifid rostrum, each part being well 
