Rev. A. M. Norman on Crustacea Cumacea. 65 
having the basal portion longer than usual (exceeding the 
length of the sixth segment); only three pairs of small lateral 
spines, but the terminal fork long and slender. Uropods 
weakly formed ; peduncle narrow, but slightly widening dis- 
tally, with only three small spines on the inner margin; 
inner branch rather shorter than the outer; external margin 
quite smooth, inner with two spines on 1st, two on 2nd, one 
and a terminal spine on 3rd joint; outer branch narrow and 
delicately formed, quite smooth on both sides, devoid both of 
spines and setae, terminating in a long and very slender spine. 
Length 10 millims. 
One specimen taken by the 1 Valorous ’ at the entrance of 
Davis Strait, Station 9, lat. 59° 10' N., long. 50° 25' W., 
1750 fathoms. 
Genus Leptostylis, G. O. Sars (1869). 
Leptostylis producta, n. sp. 
Cephalothorax remarkably short and tumid, not half as long 
as the abdomen (exclusive of the uropods). Carapace very 
short, broad, and gibbous, abruptly truncate behind, length 
not greater than breadth; rostrum short, rounded, slightly 
bent upwards ; surface smooth, or nearly so ; lateral margins 
strongly denticulately serrated, infero-anteal corner not pro¬ 
duced. Telson short, scarcely more than one third as long as 
basal joint of uropods; not longer than sixth, and not more 
than half the length of the fifth segment; no lateral spines; 
terminal spines two, large in proportion to size of telson. 
Uropods having the base nearly three times as long as the 
telson, slender, with four long, widely distant spines on the 
inner margin ; inner ramus long, styliform, nearly as long as 
the basal joint, 1st joint with two, 2nd with one long spine on 
inner margin, 3rd joint much produced, gradually attenuated 
to a fine point, no spines on the inner margin; outer ramus 
only equalling in length the first joint of the inner ramus, 
slender, and scarcely exceeding in size the terminal joint of 
the inner ramus. 
A single specimen procured in the 1 Porcupine ’ Expedition, 
1869, off the Butt of Lewis, Station 90, lat. 59° 41' N., long. 
7° 34' W., 458 fathoms. 
Genus Chalarostylis, n. g. 
(\aXapos, laxus ; crrvXos, stilus.) 
Male. General characters the same as in Diastylis , but fur¬ 
nished with three pairs of feet on the pleon, each consisting ot a 
Ann. & Mag. N. Hist. Ser. 5. Vol. iii. 5 
