the Copepod Family Ascomyzontide. 179 
? Artotrogus Boeckii, Brady, Mon. iii. p. 61, t. xci.; ? Bourne, Journ. 
Mar. Biol. Assoc. ser. 2, vol. i. p. 3817; ? Th. Scott, Eleventh Rep. 
Fish. Board Scotland, p. 210; f. C. Thompson, Trans. Lit. & Phil. 
Soc. Liverpool, vol. vii. p. 37. 
Non Artotrogus Boeckit, G. M. Thomson, Trans, N. Zeal. Inst. vol. xv. 
p. L12, t. ix. 
Distr. Bohusliin; British seas ? 
Genus 7. ACONTIOPHORUS, Brady, 1880. 
Thoracic segments laterally rounded off. Rostrum flat. 
Abdomen of 2 3-, of ¢ 4-jointed. Anterior antenne of 2 
11- to 16-jointed ; number of zsthetasks on the antennex of ¢ 
augmented. Exopodite of posterior antenne longer than 
penultimate joint. Siphon with long tube. Mandible-palp 
small, with large plumose seta. Sete of maxilla plumose. 
Swimming-feet: last joint of outer branch with 5, 4, 3, 3 
plumose sete, of inner branch with 6, 6, 5, 4 sete. Terminal 
joint of fifth foot with five sete. 
12. Acontiophorus scutatus, Brady and Robertson. 
Solenostoma scutatum, Brady and Robertson, Ann, & Mag. Nat. Hist. 
ser. 4, vol. xii. p. 141. 
Acontiophorus scutatus, Brady, Mon. iil. p. 69, t. xc.; ? G. M. Thomson, 
Trans. N. Z. Inst. vol. xv. p. 115, t. viii. ; Claus, Arb. Wien, vol. viii. 
p- 359, t. vii.; Canu, Cop. Boulonnais, p. 270, t. xxix.; I. C. Thomp- 
son, Proc. Lit. & Phil. Soc. Liverpool, vol. ii. p. 69, and Trans. Lit. 
& Phil. Soc. Liverpool, vol. vil. p. 37. 
? Acontiophorus angulatus, I. C. Thompson, Journ. Linn. Soc., Zool. 
vol. xx. p. 153, tt. xil., xiii. 
@. Length 09-1 millim. Cephalothorax elongated. 
Posterior margin of abdominal segments not angulated. 
Furea nearly three times as long as broal. Anterior an- 
tenn 11-jointed. Tube of siphon reaches to near end of 
body. 
& unknown. 
Distr. British seas; New Zealand; Triest; Madeira ?; 
Naples. 
13. Acontiophorus ornatus, Brady and Robertson *. 
Ascomyzon ornatum, Brady and Robertson, Rep. Forty-fifth Meet. Brit. 
Assoc. 1876, p. 197. 
Acontiophorus armatus, Brady, Mon. iii. p. 71, t. Ixxxi.; Claus, Arb. 
Wien, vol. viii. p. 359, t. vil. 
Length of 2 1:5, of g 1 millim. Cephalothorax large. 
* Acontiophorus elongatus, Th. & A. Scott (Ann. & Mag. Nat. Hist. 
ser. 6, vol. xiii. p. 145, t. ix.) and Th. Scott (Twelfth Rep. Fish. Board 
Scotland, p. 261), from the Firth of Forth, should be excluded from 
iz 
