CRUSTACEA FROM EAST COAST OF SCOTLAND ISI 
broad and foliaceous—more so in the female than the male, 
as shown in the figures (Figs. 10 and 11). 
Habitat—Aberdeen Bay. Several specimens were 
obtained in bottom-townet material collected in 1891, but 
only a few of them were mature. 
Lichomolgus aberdonensts resembles in general form and 
structure the species described in the “Tenth Annual Report 
of the Fishery Board for Scotland” under the name of 
Lichomolgus littoralts, but differs from it in several important 
points, as in the proportional length of the joints of the 
anterior and posterior antennz, in the form of the posterior 
foot-jaw and fifth pair of feet, and in the Bepee een length 
of the segments of the abdomen. 
Lichomolgus arenicolus, Brady (Plate VII. Figs. 1-10). 
1872. Boeckia arentcola, Brady, “Nat. Hist. Trans. of 
Northumberland and Durham,” vol. iv. p. 430. 
1880. Lichomolgus arenicolus, Brady, “ Mon. Brit. Copep.” 
Om ii eiate LOOX VIL igs. 1-7. 
Female—Length, exclusive of tail sete, 2°3 mm. An- 
terior antennze not more than half the length of the first 
body segment, and composed of six joints, which are all 
more or less setiferous ; the proportional length of the joints 
are nearly as in the formula :— 
Boe hod On Wael De 17 
Posterior antenne stout, four-jointed; the first two joints 
short, the third about twice the length of the second, and 
the last about two-thirds the length of the preceding one. 
The last joint is armed with three stout terminal clawed 
spines, which are elongate, and distinctly articulated and 
swollen near the middle—the distal half being strongly 
curved and claw-like. There is a fourth terminal articulated 
spine, but it is more slender and less curved than the other 
mince (ic. 2). Mandibular stylets “two, the upper one 
provided with a row of marginal teeth, the first two of 
which are large, while the others gradually decrease in size 
towards the distal end. The lower stylet bears a number of 
fine hairs on its upper margin (Fig. 4). The maxille 
consist of a broad laminar plate rounded at the end, and 
