99 
R. NORRIS WOLFENDEN. 
in female, end segment rather curved and broad basally ; in male, left foot with several 
long appendages, right foot, thin appendages at end and rest foliate; size =0'8-l mm. 
(Naples.) 
2. S. SCOTTI. 
S. gyrails, Scott, Nineteenth Rep. Scotch Fishery Board (1901), p. 237. 
S. scotti, Sars, “ Crustacea of Norway,” Vol. IV., p. 63. 
Slender ; cephalothorax symmetrical; genital segment without spines, furca longer 
than broad, anterior antennm reach end of abdomen 2, Re of posterior antennee twice 
as long as Ri. 9, fifth, with denticles on last segment, which is elongated and 
pointed; S , fifth, penultimate joint of left foot tumefied, last segment with about half 
a dozen short processes; last joint of right foot with long, sickle-shaped process. 
Size=’85-'95 mm. (Loch Fyne ; Norway.) 
3. S. MINUS. 
S. minor, Scott, Tenth Rep. Scotch Fishery Board, 1892, p. 245. 
Robust, cephalothorax symmetrical ; genital segment without spines, anterior 
antennae about as long as the thorax, furca as long as broad, fifth feet in ? with 
elongated last segment with two little lateral spinules; in ^, right foot a long foliate 
joint at end, left foot with two digitiform processes at end, penultimate joint only 
slightly tumefied. Size = 0‘74 mm. (Firth of Forth.) 
4. S. LAMELLATUM. 
S. lamellatus, Sars, “ Crustacea of Norway,” Vol. IV., p. 62. 
Short and robust, last segment asymmetrical; right side longest, genital segment 
unsymmetrical and rounded prominence on right side, but no spines ; furca about as 
long as broad, anterior antennae reach to furca, branches of posterior antennae equal ; 
fifth foot in 9, last joint elongated, with fine spine midway ; in $ , left foot with 
much tumefied penultimate segment, with proximally a long spine, and last joint 
with a number (about nine) of leaf-like appendages ; right foot not foliate, but last 
joint with three or four short, rounded appendages. Size = 1 mm. (Norway.) 
5. S. FULTONI. 
S. fultoni, Scott, Ann. and Mag. Nat. Hist., 7th series, Vol. I. (1898), p. 185. 
Cephalothorax symmetrical ; genital segment with spine and hook ventrally. 
Fifth feet in 9 are larger and broader (knife-like) than the other, which is pointed ; in 6 
right foot with elongated penultimate segment and short, strong, foliate end segment; 
left foot, penultimate segment tumefied, extremity with five or six leaf appendages, 
and bifid claw. Size = 1 mm. (Clyde.) 
