A5S . Part I1T.—Twentieth Annual Report 
Antennules scarcely reaching to the end of the cephalo-thoracic seg- 
ment, eight-jointed ; the first four joints are large, but the last four are 
very small (fig. 20). 
Antenne short and moderately stout; secondary branches small and 
three-jointed (fig. 21). 
Mandibles robust, with a broadly truncate biting edge which is armed 
with several small and somewhat irregular teeth ; palp well developed, 
two-branched, but the posterior branch is very small (fig. 22). 
Second maxillipeds stout, and armed with a moderately strong ter- 
minal claw (fig. 23). 
First pair of thoracic feet stout; the proximal joint of the inner 
branches scarcely reach beyond the ends of the outer ones, second joint 
small, the third is about twice the length of the second, while the second 
and third together are scarcely equal to half the length of the first joint ; 
the outer branches are composed of three sub-equal joints (fig. 24). The 
second, third, and fourth pairs are slender and moderately elongated, and 
the branches are all three-jointed ; figure 25, which represents the fourth 
pair, shows that the inner branches are only slightly longer than the outer 
ones. 
The fifth pair are foliaceous, the basal joints being broadly sub- 
triangular, and furnished with five moderately stout but not very long 
sete on the somewhat rounded apex. The secondary joints are sub- 
rotund, and scarcely reach beyond the apex of the basal joints ; they are 
each provided with five sete of unequal lengths, the second and third, 
counting from the inside, being considerably longer than the other three 
fig. 26). 
The caudal furca are very short. 
Habitat.—This species was obtained in some dredged material from 
Station VII., Firth of Forth (between Fidra and the Bass Rock), on 
July 9th, 1901; it appears to be somewhat rare. No males were 
observed. 
Remarks.—The Stenhelia just described, and which I have referred to 
Stenhelia hispida, G. S. Brady, while differing in a few particulars from 
the species named, agrees very well with it in several important particu- 
lars. The structure of the antennules, for example, is almost identical 
with that of the antennules in Stenhelia hispida as described and figured 
by Professor G. S. Brady, and the first and fifth pairs of feet are also 
nearly alike in both. 
Stenhelia confusa, T. Scott (sp. n.). Pl. XXII, figs. 17-25. 
Description of the Female.—Length about 9 mm. (about 54 of an 
inch). Body moderately stout, tapering slightly towards the posterior 
end ; rostrum prominent (fig. 17). 
Antennules shorter than the cephalo-thoracic segment, moderately 
stout, and composed of eight joints; the first, second, and end joints are 
the longest, while the fifth and sixth are very small (fig. 18). The 
approximate proportional lengths of the various joints are shown in the 
formula— 
Proportional lengths of the joints, . 22 . 14 .8.6.65.4 .7. 4 
Numbers of the joints, : : OMT WQS IR RB ceo teagan 2 
All the joints with the exception of the first are moderately setiferous. 
The antenne are somewhat similar to those of Sienhelia ima, Brady 
(fig. 19). eb: 
The mandibles are also somewhat similar to those of the same species, 
but the branches of the mandible-palp appear to be shorter (fig. 20). 
