“TERRA NOVA” EXPEDITION. 
84 
grooved. It is narrow, and its sides converge gradually towards the hinder end, 
where they diverge on the arms of a Y, whose deep, backwardly directed cleft 
contains on each side seven spines, the whole structure having a remarkably larval 
appearance, though the specimens are quite adult. Thus, P. longispina would belong 
to the sub-genus Phye , were the latter worth maintaining in view of the complete 
gradation of form shown by the telson in the several species of Pasiphaea. 
One specimen was taken at Station 276, the other from the stomach of an 
albatross, at a locality which is not stated, but must have been considerably further 
north. 
Family PANDALIDAE. 
Sub-family THALASSOCARIDINAE. 
13. Tltalas socar is novae-zealandiae, n. sp. Fig. 2. 
Diagnosis .—Rostrum almost straight, very slightly upturned towards the tip ; 
its formula y, four of the teeth standing behind the orbit. A spine below the eye 
and one behind the antenna present on the carapace. Antennular stalk reaching end 
of rostrum ; its last two joints subequal, together shorter than first. Antennal scale as 
long again as antennular stalk, without teeth on outer edge, its inner edge converging 
towards terminal spine, which projects freely. Antennal stalk slightly longer than 
antennular. Third maxilliped outreaching antennal scale by about one-third, and 
first leg by about one-half, of its end-joint. Second leg slightly outreaching third 
maxilliped, its chela slender and simple, its wrist longer than its hand, but divided into 
two by a joint slightly beyond the middle of its length. Third leg longest of all, 
fourth a little outreached by second, fifth by first. Legs 3-5 with slender, naked 
end-joints, but a row of spines under meropodite, carpopodite, and propodite, and 
