the Copepod Family Ascomyzontide. 175 
Exopodite of posterior antenne shorter than penultimate 
joint. Siphon without tube. Mandible-palp 1-jointed, rod- 
shaped ; setee notyplumose. Sete of maxilla plumose or not. 
Swimming-feet: last joint of outer branch with 4, 4, 4, 4 
plumose setz, of inner branch with 6, 6, 6, 5 setae; marginal 
spines of outer branches small. ‘Terminal joint of fifth foot 
with 3 sete. 
1. Cyclopicera echinicola, Norman. 
Ascomyzon echinicola, Norman, Rep. Brit. Assoc. for 1868, p. 300. 
Cyclopicera latum, Brady, Ann. & Mag. Nat. Hist. ser, 4, vol. x. p. 8, 
t. ili, and Mon. iii. p. 56, tt. Ixxxix., xc.; I. C. Thompson, Proc. 
Lit.& Phil. Soc. Liverpool, vol. ii. p. 189, and Trans. Lit & Phil. 
Soe. Liverpool, vol. vi. p. 86; Th. Scott, Eleventh Rep. Fish. Board 
Scotland, p. 210, t. iii., and ? Trans, Linn. Soc., 2nd ser. Zool. vol. vi. 
p. 127, t. xiii. figs. 25-30. 
Length of ? 08-0°85, of ¢'0°55-0°6 millim. Nearly 
colourless. The last two abdominal segments of 9 equal in 
length, rather longer than the furca. Twelfth to eighteenth 
joints of anterior antenne of ? longer than broad; the last 
three joints narrower than the preceding. Outer lobe of 
maxilla scarcely half as long and broad as the inner ; sete 
not plumose. 
Distr. British Seas ; Naples. 
2. Cycloptcera violaceum, Claus. 
Echinocheres violaceus, Claus, Arb, Wien, vol. viii. p. 356, t. v. 
Length of ¢ 1:15, of g 0°75 millim. Violaceous, black- 
pigmented, similar to the host (Strongylocentrotus lividus). 
Last abdominal segment of 2 as long as the furea and 
shorter than the preceding. Seventeenth and eighteenth 
joints of the anterior antennz of ? longer than broad; the 
preceding four joints as long as broad ; the last three joints 
much narrower. Outer lobe of maxilla narrower (and shorter?) 
than the inner, which has a long plumose seta and three short 
sete. 
Distr. Triest ; Naples ? 
3. Cyclopicera minutum, Claus. 
Echinocheres minutus, Claus, ibid. p. 356, tt. v., vi. 
Length of 2? 0°5, of g 0-4 millim. Brownish, black- 
spotted. The last two abdominal segments and the furca nearly 
equal in length. No joint of anterior antenne of ? longer 
than broad (if any, the eighteenth), most of them much 
