198 Scientific Proceedings, Royal Dublin Society. 
as Phoxichilidium pygmeum, Hoek (4) records it as occurring off 
the coasts of Brittany and Holland at a depth of 1-7 metres. 
Dohrn (9) found it also in the Mediterranean, and described it 
as Pallene longicolle; and Sars records it from the south and west 
coasts of Norway. Lastly, Schimkéwitsch (2) obtained a single 
example from the “ Pisani” collections, taken at Port Lagunas, in 
South America. The species has therefore an extremely wide 
range. 
Genus.— Puoxicuitipium, M.-Edw. 
Phoxichilidium femoratum (Rathke). 
This species occurs both on the east and west coasts. Miss A. 
Warren has found it in Killala Bay; Mr. Kane has obtained it in 
Dublin Bay, and Prof. Haddon in Dalkey Sound. Thompson 
records it (as Orythia coccinea, Johnst.) from Strangford Lough. 
This is a widely-distributed northern species, recorded from the 
coasts of Greenland, Lapland, Norway, Denmark, and Scotland. 
The species from the eastern coast of North America, P. mavillare, 
Stimps., is in all probability identical; but I would follow Sars 
in regarding Hoek’s P. femoratum (4), from the coasts of Brittany 
and Holland, as,distinct from the present form. 
Thompson records also Phowichilidium globosum, Goods. (6), 
from Portmarnock. This is a species which it is hardly possible 
to recognise} without types. It can scarcely be identical with 
P. femoratum (as Sars thinks possible), for Goodsir was apparently 
acquainted with that. species, and gives points of distinction 
between them. Possibly it is identical with Hoek’s P. femor- 
atum. 
Family.—PHOXICHILIIDZ. 
Genus.—-—-Puoxicuitus, Latr. 
This genus is sometimes classed in the same family as Pye- 
nogonum. The two genera agree in having both lost their three 
foremost pairs of appendages, except the false legs of the males. 
But they differ so considerably in other points, as to suggest that 
they have reached their present degraded state through quite 
independent lines of descent. Schimkéwitsch (10) suggests that 
Phoxichilus has come down from the Nymphonide through the 
Pallenide, while Pycnogonwn has been derived from a form 
resembling Rhynchothoraz, as Dohrn (9) also believed. 
