CRUSTACEA COPEPODA. II. 67 
only a little shorter than the caudal rami which also, and especially beyond the middle, are very thin; pubes- 
cence on the distal part of legs and caudal rami not discoverable. The genital area as in H. mediterranea 
encircled by a narrow, chitinized, transverse ring broadly open in front; as I have not cut off the posterior 
end of the body and cleaned it from the inside I cannot positively deny the possibility that some part of the 
genital area may be equipped with fine hairs, though it was impossible to discover any such clothing. 
Male. — Closely allied to H. mediterraneus as to clothing, naked front margin of the head, etc. In 
the 2-jointed antenne the second joint is considerably longer than the first. Thoracic legs distally very thin 
as in the female and very long, almost one-fourth as long again as the distance between the front margin 
of the head and the origin of the maxillipeds; pubescence not perceptible. The caudal rami somewhat shorter 
than the thoracic legs, but otherwise similar to them in all particulars. — The specimen seems in normal 
state to have been at most 0.16 mm. long. 
Occurrence. — Not taken by the “Ingolf’”’ but by the “Thor’’ at a single place. 
West of South Iceland: Lat. 63°46’ N., Long. 22°56’ W., 150 met., temp. 7°28; in the right branchial 
chamber of an immature male of Leptostylis villosa G. O.S. 1 female, 
I male, r lump of eggs. 
Spheeronella Salensky. 
Of this very rich genus 13 species are mentioned here from our area, and 6 among them are new 
to science. It may be practical to arrange them according to their hosts. 
A. Parasites on Amphipoda. 
83. Spheronella Argissze H. J. H. 
1897. Spheronella Argisse H. J. Hansen, Choniostomatide p. 123, Pl. IV, figs. 3 a—3n. 
Occurrence. — Only the specimens mentioned in the paper quoted are known. The species lives 
on Argissa typica, and the material was found on specimens from West Greenland, without special locality. 
In a marsupium was found 1 female, 2 males, 1 larva and 4 ovisacs; in an immature specimen was found 
I pupa, and in another immature specimen a recently hatched female. (For further particulars see op. cit. 
p. 125). 
84. Sphezronella Metope H. J. H. 
1897. Spheronella Metope H.J. Hansen, Choniostomatide, p. 125, Pl. IV, figs. 4a; Pl. V, figs. 1 a—r g. 
Occurrence. — “The marsupium of Metopa Bruzelii (Goés) from West Greenland off Godthaab, 
“deep water’ [probably 40—60 fathoms], in Sertularia, C. Holbdll”. On 3 infested female Amphipoda 3 
females, I male and several ovisacs (further particulars l.c. p. 127). 
85. Spheronella Holbelli H. J. H. 
1897. Spheronella Holbélli H. J. Hansen, Choniostomatide, p.127, Pl. V, figs. 2 a—2 g. 
Occurrence. — “The marsupium of Pavampiuthoe Boecku H. J. H. from West Greenland off Godt- 
haab, “deep water’’ [probably 40—60 fathoms], on Sertularia, C. Holbdll”. In one Amphipod: 1 female, 
I male and 8 ovisacs; in another: 1 female and I male. 
9* 
