176 Dr. Wilh. Giesbrecht on 
broader than long; the last three joints scarcely narrower 
than the preceding. Maxilla as in violaceum. 
Distr. Triest. 
Genus 2. ASTEROCHERES, Boeck, 1859. 
Thoracic segments laterally rounded off. Rostrum narrow, 
not prominent. Abdomen of ? 3-, of ¢ (probably) 4-jointed. 
Anterior antenne of 2? 19-, of g 17-jointed; with one 
esthetask in both sexes. Exopodite of posterior antenne 
shorter than penultimate joint. Siphon without tube. 
Mandible-palp 2-jointed, rod-like. Sete of maxilla not or 
scarcely plumose. ‘Terminal joint of fifth foot with two sete. 
4, Asterocheres Lilljeborgit, Boeck. 
Asterocheres Lilljeborgii, Boeck, Forh. Vid.-Selsk. Christiania, 1859, 
p- 6, t. ii. ; PCanu, Cop. Boulonnais, p. 264, t. xxvii. 
Artotrogus Lilljeborgii, Brady, Mon. iii. p. 64. 
Length of ¢ 1, of 3 (?) 0°6 millim. Mandible-palp long ; 
first joint twice as long as second. ‘Terminal joint of fifth 
foot large, margins ciliated. Cephalothorax of 9? circular ; 
: 5% 8 Pp 
genital segment longer than broad. 
Distr. Norway ; Ireland; English Channel ? 
5. Asterocheres Renaudi, Canu. 
Asterocheres Renaudi, Canu, Cop. Boulonnais, p. 263, t. xxvi. 
Length of ¢ 0°85 millim. Mandible-palp short ; the two 
joints rather equal in length. Chitine of siphon and ap- 
pendages of head transversely rippled. Fifth foot small. 
Cephalothorax elongated ; genital segment of ? broader than 
long. 
Distr, English Channel. 
Genus 38. DERMATOMYZON, Claus, 1889. 
Thoracic segments laterally rounded off. Rostrum blunt. 
Abdomen of 9 4-, of g¢ 5-jointed. Anterior antenne of ? 
19-, of g¢ 13-jomted; with one esthetask in both sexes. 
Exopodite of posterior antenne shorter than the penultimate 
joint. Siphon without tube. Mandible pointed, scarcely 
denticulated; palp 1-jointed, rod-like; sete not plumose. 
Sete of maxilla not plumose. Swimming-feet: last joint of 
outer branch with 5, 5, 4, 4 plumose sete, of inner branch 
with 6, 6, 5, 4 sete. ‘Terminal joint of fifth foot with five 
sete. 
