562 DR THOMAS SCOTT ON THE 
others becoming attenuated towards the distal extremity ; the second joint is rather 
onger than the first or third; the fourth, fifth, and sixth are subequal in length, and 
are each rather shorter than the third ; the three end joints are small, but the penulti- 
mate one is rather shorter than that on either side (fig. 25). The antenne are similar 
to those in Parastenhelia anglica. 
Mandibles small, tolerably slender, and narrower towards the apex, which is armed 
with three or four small teeth (fig. 26); mandible-palp very small and two-branched. 
First’ maxillipeds simple; terminal claw moderately stout (fig. 27); second 
maxillipeds furnished with a stout spiniform bristle near the middle of the inner margin 
of the penultimate joint, and the terminal claw scarcely reaches beyond the proximal 
end of the same joint (fig. 28). 
All the four pairs of swimming legs are slender. The inner ramus of the first pair 
is considerably longer than the outer and composed of two joints; the end joint is short, 
but the first is greatly elongated and furnished with a plumose bristle near the middle 
of the inner margin, and a few scattered spinules on the distal half of the outer margin ; 
the terminal claws are slender; one is moderately elongated, the other shorter. The 
middle joint of the outer ramus is also tolerably elongated, and the first and second 
joints are each furnished with a slender spine near the distal end of the outer margin, 
and there are also several marginal spinules; the short end joint is armed with two 
slender terminal claws and two elongated setze ; the second basal joint of this pair has 
the lower margin fringed with small spinules, and a stout seta springs from both its 
inner and outer distal angles (fig. 28). 
The second, third, and fourth pairs are similar to those in Parastenhelia anglea 
(fig. 29). 
Fifth pair small; the inner portion of the basal joint, which is subtriangular in 
outline, reaches to about the middle of the outer second joint, and bears five setee of 
unequal lengths round its distal end; the second joint is broadly ovate, and the outer 
and inner margins of the proximal portion of the joint are nearly parallel; but the 
distal end is somewhat rounded and furnished with six sete arranged as shown in the 
drawing (fig. 32). 
Habitat.—Scotia Bay, South Orkneys; collected in June 1903; Station 325, 
60° 43’ 49” S vAd° 387 387 a 
Remarks.—The genus Parastenhelia was established by I. C. THompson & 
A. Scorr in 1903 for two Harpactids from the pearl-oyster beds in the vicinity of 
Ceylon.* In the species belonging to this genus, the inner ramus of the first pair of 
thoracic legs is usually elongated and composed of two joints. Besides the two species 
from Ceylon, and the one now recorded, another is described in the Crustacea of 
Devon and Cornwall, by Canon A. M. Norman & T. Scort, p. 148, pl. x. 
figs. 10 and 11 et seq. 
* Report to the Government of Ceylon on the Pearl-Oyster Fisheries of the Gulf of Manaar, by W. A. HErpMAN, 
D.Se., F.R.S. ; Supplementary Report on the Copepoda, by I. C. Tuompson & A, Scorr (1903), p. 263, 
3 
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