20 CRUSTACEA COPEPODA. II. 
Remarks. — This species is easily separated by the claws on the antenne, the joints in the rami 
of first legs, the shape and denticulation of fifth legs, the short genital segment, and the two following very 
short segments. 
Occurrence. —- Not taken by the “Ingolf”’, but by two Danish collectors. 
West Greenland: Egedesminde (Lat. 68°42’ N.), Mag. sc. M. Levinsen; 3 females. 
— — Godthaab (Lat. 64°11’ N.), in fishing net, Captain Ryder; 3 females. 
Thersitina Norman. 
This genus is the only representative for the family Ergasilidee found in our area, and it comprises 
as yet only a single valid species. 
20. Thersitina Gasterostei Pagenst. | 
1861. Thersites Gasterostei Pagenstecker, Archiv f. Naturg. 1861, p. 118, Taf. VI, Fig. 1—-9. 
1863. Ergasilus —-- Kroyer, Nat. Tidsskr. 3 R. B. II, p. 307, Tab. XII, fig. 2, a—h. 
1892. Thersites gasteroste: Canu, Travaux Laborat. Wimereux-Ambleteuse, T. VI, p. 245, Pl. XXIII, fig. 
13—18. 
!1913. Thersitina — T. & A. Scott, Brit. Paras. Copep, p. 42, Pl. XXV, figs: 1-6; Pl. LI, fig. 6: 
Occurrence. — Not taken by the “Ingolf”’. Kroyer recorded it from West Greenland and the Feer- 
oes; it is generally found in the branchial cavities of Gasterosteus aculeatus, most frequently on the inner sur- 
face of the gill-covers, sometimes also on the gills and rarely besides on the skin, especially on the pectoral 
fins (Kroyer; Canu). 
Distribution. — On Gastevrosteus aculeatus at Barra, Outer Hebrides, in the river Forth and at 
Aberdeen; on Sfinachia vulgaris in Loch Etive, west coast of Scotland (T. & A. Scott). On Gast. aculeatus 
it has also been taken at Wimereux (Canu), at Ostende (Pagenstecker), in the Sound and in Flensborg Fjord 
(Kroyer). 
Eunicicola Kurz. 
On this genus, of which only a single species is known, G. O. Sars established in 1918 the new family 
Eunicicolidee. 
21. Eunicicola Clausi Kutz. 
1877. Eumicicola Clausi Kurz, Sitzb. Akad. Wiss. Berlin, I, Jahrg. 1877, p. 1, Taf. I—II. 
1898. Eurynotus insolens T. & A. Scott, Ann. Mag. Nat. Hist. Ser. 7, Vol. I, p. 188, Pl. X, fig. 17; Pl. XI, 
figs. 5—13. 
!r9g18. Eumicicola Clausi G.O. Sars, Account, p. 204, Pl. CXIII. 
The single specimen agrees on the whole with the figures given by Sars excepting in one point, viz. 
that the head is produced into a kind of transverse plate with the front margin straight and the lateral mar- 
gins oblique, each lateral margin projecting from the head at a point a little before the end of the anterior 
margin of first joint of the antennula; this plate is considerably longer, more developed, than in Sars’ figure 
of the animal seen from below. Each ovisac contains 6 eggs. 
