THE ANNALS 
AND 
MAGAZINE OF NATURAL HISTORY. 
[SIXTH SERIES. ] 
No. 70. OCTOBER 1893. 
XL.—On some new or rare Crustacea from Scotland. By 
Tuomas Scort, F.L.S., Naturalist to the Fishery Board 
for Scotland, and ANDREW SCOTT. 
[Plates XI.—XTII. | 
CoOPEPODA, 
Diosaccus propinguus, sp.n. (Pl. XI. figs. 1-6.) 
Female.—Length, exclusive of caudal set 1 millim. (5 of 
an inch). Body moderately robust. Anterior antenne eight~ 
jointed, the first four joints stout, subequal, the last four 
slender; the combined length of the last four is equal to 
nearly two thirds of the combined length of the first four ; 
the proportional lengths of the joints are shown by the 
formula— 
Posterior antenne comparatively short and stout, secondary 
branch two-jointed (fig. 3). Mandible-palp one-branched, 
two-jointed as in Drosaccus tenuicornis (Claus), but the end 
joint is much narrower than, and only about a third of the 
length of, the basal joint. The maxille and anterior foot- 
jaws are nearly as in Deosaccus tenuicornis. The posterior 
foot-jaws are stout and the terminal claw is as long as the 
Ann. & Mag. N. Hist. Ser. 6. Vol. xii. 19 
