242 Part [11—Twelfth Annual Report 
Habitat.—Off St Monauce. Scarce. 
Remarks.—This is a robust species, with cuwparatively elongate 
swimming-feet. It is readily distinguished by the peculiar form of the 
fifth pair of thoracic feet. 
Ameitra longtremis, var. intermedia, nov. var. (PI. VI. figs. 6-14.) 
This form differs from the species just described, and of which it 
appears to be a variety, and the more important of these differences are 
as follows :—The anterior antenne are shorter and less robust, and the 
proportional lengths of the joints are not the same, as shown by the 
formula :— 
LOR es 8) Orc OL ec 10 Opel 
Le seea 5 ey vel 
The last joint of the inner branches of the first thoracic feet is consider- 
ably shorter, and the spine that springs from the inner distal angle of the 
second basal joint is much longer than in the first pair of Amezra longz- — 
remis. The basal joint of the fifth pair is narrower at the proximal end, 
and more produced ; and the secondary branch is rather broader, and less 
cylindrical in form. These various differences, though scarcely marked 
enough to be of specific value, are yet sufficiently important to constitute 
a varietal difference. 
Ameira exilis, T. and A. Scott. (Pl. IX. fig. 30; Pl. X. figs. 1-12:) 
1894. Ameira exilis, T. and A. Scott, p. 139, pl. viii. figs. 18-20 ; 
pl. ix. figs. 1-3. 
Description.—Female. Length, 1:4 mm.(;',th ofaninch). Body elon- 
gate, slender. Anterior antennz slender, nine-jointed. The seventh and 
eighth joints very small, the others of moderate length, as shown by the 
formula :— 
18; 18)" 182/10); Bee eaten 
OPN IGy cre Tends ara) Py Pos 
Posterior antenne short, two-jointed. Secondary branch small, one-jointed, 
and furnished with three terminal plumose sete. Mandibles elongate, 
narrow. Apex obliquely truncate, armed with a large tooth in the middle 
and several small ones on each side. The basal joint of the mandible-palp 
is considerably dilated, with the proximal end forming a narrow stalk-like 
attachment to the base of the mandible; while the distal margin bears 
three short setz. The secondary joint, or branch, of the palp is narrow, 
and about three times longer than broad, with a small marginal and four 
apical setz. Posterior foot-jaws robust, and armed with a strong 
terminal claw (fig. 6). The first pair of swimming-feet are elongate and 
slender. ‘The first joint of the inner branches, which is furnished with a 
plumose seta on the lower half of the inner margin, is rather longer than 
the second and third together. The second joint is little more than half 
the length of the third, and bears a smallf plumose seta on its inner distal 
angle. The outer branches, which are composed of three sub-equal joints, 
extend very little beyond the first joint of the inner branches. The inner 
branches of the next three pairs are short, and only extend to about the 
middle of the second joint of the elongate outer branches. The basal 
joint of the fifth pair is broadly triangular, and furnished with five 
terminal setz ; the second one of which, counting from the outside, is very 
long, being more than double the length of the seta on either side of it. 
The secondary joint is oblong-ovate in shape, its greatest breadth being 
equal to about two-fifths of the length, and there are five sete of variable 
lengths ranged at intervals from the middle of the outer margin to the 
apex, in addition to a very long intero-sub-apical seta. The apex of the 
