CRUSTACEA COPEPODA. II. 
Un 
about as long as the three posterior segments combined; last segment about as long as broad and a good deal 
longer than the preceding one. Caudal rami a little shorter than the genital segment, with the seta on the 
outer margin behind the middle. 
Antennule about as long as the head and composed of 7 joints (fig. I b); third joint much the longest, 
about as long as the three following joints combined; fourth and fifth joint very short, sixth and seventh 
moderately long, subequal in length and together nearly longer than the four following joints combined. 
— Antenne (fig. 1 c) differ from those in all other northern species in having the third joint somewhat longer 
than the fourth; the terminal seteze are much shorter than usual, and one among them is in reality a somewhat 
small, spiniform and very curved hook. — Mandibles (fig. 1d), maxillule (fig. re), maxille (fig. 1 f) and 
maxillipeds (fig. 1 g) exhibit minor differences from those in allied forms excellently figured by Sars. — 
Fourth pair of thoracic legs (fig. 1 h) possesses on the outer side of third joint of the exopod 2 spines, and 
besides the usual much longer terminal spine. — Fifth legs (fig. 11) biarticulate; first joint very expanded 
outwards; second joint oblong-ovate, much longer and much narrower than the first, with 2 terminal setze 
and I seta on each lateral margin, but without spines. 
The ovisacs are large and very oblong, with a large number of somewhat small eggs. 
Length 2.2 mm.; an ovisac is 0.83 mm. long and 0.37 mm. broad. 
Remarks. The general aspect of the head and anterior thoracic segments in the two specimens 
seen shows that the animals are not free-living. It is surprising that a species of the genus Cyclopina lives 
within Ascidians; consequently I asked my old friend Prof. G. O. Sars, if he, who recently published an 
excellent account of the Norwegian forms, had met with any such thing in the literature; he answered that 
it was quite new and very interesting. C. Phallusia is instantly separated from all other species by the joints 
in the antennule, and above all by having the penultimate joints in the antenne conspicuously longer than 
the terminal one; the ovisacs contain a much higher number of eggs than in any other northern species. 
Occurrence. — Not taken by the “Ingolf’’, but secured by two Danish zoologists. 
Feroes: Vestmanhavn. In Phallusia obliqua, June 18, 1906. Mag. sc. R. Horring. 1 female. 
South-West of the Feeroes: Lat. 61°49’ N., Long. 14°11’ W. In Phallusia obliqua. Young-fish trawl, 
800 m. wire out. Sept. 2, 1904. “Thor” (Dr. J. Schmidt). 1 female. 
Ascomyzon Thorell. 
Of this large genus 5 species are found in the material, but only 2 among them could be determined. 
The new forms are small and hauled up from considerable or great depths. 
2. Ascomyzon asterocheres G. O. S. 
1859. Asterocheres Lilljeborgi Boeck, Forh. Vid. Selsk. Christiania for 1859, p. 6, Pl. II. 
!1915. Ascomyzon asterocheres G. O. Sars, Account, Vol. VI, p. 85, Pl. LI & LIL. 
Occurrence. — This species has been gathered by the “Ingolf’’ at a single station. 
Davis Strait: Stat. 29: Lat. 65°34’ N., Long. 54°31’ W., 68 fathoms, temp. 0°2; 3 specimens on a 
specimen of Cribrella sanguinolenta O. F. Mull. 
