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 =0'8-1 mm. 

 (Naples.) 



2. S. SCOTTI. 



S. ffymns, 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 antennae reach end of abdomen 2, Re of posterior, antennae twice 

 as long as Ri. 9 , fifth, with denticles on last segment, which is elongated and 

 pointed ; $ , 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 9 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 = 074 mm. (Firth of Forth.) 



4. S. LAMELLATUM. 

 S. lameUatus, 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 c? 

 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.) 



