"^'iSi!^,i:t" ^MMm in the Uni.

204 CRUSTACEA.
Eurysilenium, gen. nov., Sars, /. c. pp. 5-11, pi 9. figs. 16-22. Femina:
corpus breve, latum, subtrapezoideum, haud segmentatum, antennis pedibusque
destitutum. Acetabulum ventrale minutum, tubulosum. Sacculi
ovigeri duo maximi, non extremitate sed paido infra earn corpori affix! Mas
minutissimus elongatus, distincte segmentates, acetabulo sat magno tubuloso
in ventre segmenti primi sito, extremitate corporis posteriore uncinis duobus
comeis, mobilibus, retro porrectis pra?dita, antennis pedibusque nullis.—E.
truncation, sp. n., Drobak, near Christiania, on the back or hinder end of
Polynoe cirrata.
Chelemidifovmis, gen. nov.,Hesse, Ann. Sc. Nat. xi. pp. 275-286, pi. 1. Male
unknown. Body of the female hemispherical, without articulations; no eyes;
antenna? simple, nodulous, 6-articulated; head distinct from the trunk; three
pairs of maxillipeds, the first long, terminated by sharp points ; mouth small,
conical, with digitated mandibles, and surrounded by flat, falciform, pointed
laminas; three pairs of thoracic feet, which are two-branched, small, and of
unequal size, and terminated by sharp points; abdomen prominent, sacciform;
matrical apertures very large; two oval ovisacs.—Ch. typicus, sp. n., found
fixed on fragments of Arenicola pisqatovum on the [northern P] coast of France.
The author proposes for it a new family, with the name " Annelidicoles."
ANTHEACHERIDJE.
M. SARS, Kundsk. Christ. Fauna, pp. 37-41, proposes this new
family on the following characters :—Body of the females thick,
divided into distinct segments, which, however, are immobile;
feet rudimentary. The animals live parasitically, feeding on the
blood of other animals, for example, Actinia?, and even fishes,
but are not affixed to them. The males are not so much smaller
than the females as in the Lerna?ida?. To it belong Staurosoma,
"Will., Antheacheres, Sars, 1856, and Philichthys, Steenst. 1861.
LERN-EiniE.
Meliiinae-heres, gen. nov., M. Sars, /. c. pp. 11-16, pi 8. figs. 1-9. Femina :
corpus oblongum, ventricosum, distincte segmentatum, antennis pedibusque
destitutum. Acetabulum minutum, breviter tubulosum, sub primo segmento
(capite) situm. Sacculi duo ovigeri tenues, cylindrici, longissimi, ovulis biserialibus.
Mas minutissimus, ovalis, ventricosus, segmentatus, antennis
superioribus bene evolutis, artieulatis, setigeris, infeiioribus parvis tenuibus
uniarticulatis, aduncis, pari unico maxillipedum validorum, pedibus natatoriis
nullis.—M. ergasiloides, sp. n., Drobak, near Christiania, on the bristlebearing
appendices of Melinna (Sabellidcs) cristata. This genus is intermediate
between the Caligida? and Lernseida?, or, as the author says, a Lernafid
with segmentated body.
Xercicola orata, Keferst. This parasite, living on Nereis cultrifera, Qrube,
is the subject of a paper by W. C. Mackintosh, J. Micr. Sc. (2) no. xxxvii.
Jan. 1870, pp. 39-41, pi. 5. He did not know that it was described, but fortunately
did not rename it. He also describes the male, before unknown; it
has two pairs of feet and a caudal fork.
Pennel/a orthagorisci, sp. n., Wright, Ann. N. I! (4) v. p. 44, pi. 1, Cork
Harbour, on Orthagoriscus mola (L.).