152 BRITISH COPEPODA. 



level, and very possibly, during storms or excessively 

 high tides, exposed to some admixture of salt water. 



3. HARPACTICUS FLEXUS, Brady and Robertson. PL LXIV, 



figs. 1218. 



Harpacticus flexus, B. & E. Ann. and Mag. Nat. Hist., ser. 4, 

 vol. xii, p. 134, pi. ix, figs. 1721 (1873). 



First pair of antennae (fig. 12) rather short, 8- 

 jointed : first four joints in the female of nearly equal 

 length, last four also subequal, but less than one-half 

 the length of the preceding ; in the male (fig. 1 3) the 

 second joint is very short, the fifth and sixth coalescent 

 and forming a vesiculiform swelling, the last two 

 joints claw-like. Inner branch of the second antenna 

 minute, 2-jointed. Second foot-jaw small, hand elon- 

 gated, oval, with a slender curved terminal claw. 

 First pair of feet (fig. 15) not materially different from 

 those of H. chelifer, but more slender. Outer branch 

 of second foot in the male (fig. 16) very similar to that 

 of H. chelifer ; third foot strongly spined. Body con- 

 stricted at the base of the abdomen. Fifth pair of feet 

 in the female (fig. 17) as in H. chelifer ; in the male 

 (fig. 18) the marginal setee are shorter and spine-like. 

 Length -^th of an inch ('64 mm.). 



Taken by the surface-net in Westport Bay, Ireland. 

 Dredged in depths of ten to twenty fathoms amongst 

 the Scilly Islands, off Bute, and in one or two fathoms 

 at Kames Bay, Cumbrae (Firth of Clyde), and in Lough 

 S willy (Donegal). 



