14 
fish, Sey/lium canicula, aud occasionally on the fins of the 
tope. 
Lernwopoda bidiscalis, W. V. de V. Kane. 
A remarkably distinct species, and always found on 
the ends of the claspers of the male tope, Galeus canis. 
These claspers, where the parasites are adhering, are 
almost Invariably found to be torn and bleeding. A 
third species, Lernawopoda clutha, T. Scott, 1s found on 
the gills of Rata fullonica; a fourth LL.  salmonea 
(Gisler), on the gills of the salmon; and a fifth JZ. 
elongata (Grant), attached to the eye of the Porbeagle 
shark and the Greenland shark, but none of these have, 
so far, been recorded from the Ivish Sea. 
Brachiella ovalis (Kroyer). 
Attached to the gill rakers of the common gurnard, 
more common on half-grown fish than adults. 
Brachiella insidiosa, Heller. 
A moderately-large species, and found only on the 
eill of the hake. A considerable number are sometimes 
found on one fish. Another species, Brachiella merlucer, 
Bassett Smith, attaches itself to the gill rakers of the 
hake, but so far has not been seen by us. 
Anchorella uncinata (Muller). 
Very frequent in the mouth, &c., of species of Gadus, 
such as whiting. 
Anchorella appendiculata, Kroyer. 
From the hake, but the position in which they were 
found is not stated. 
Nicothoé astaci, Aud. and M. Edw. 
This peculiar copepod is sometimes found in con- 
siderable numbers on the gills of the common lobster. 
The wing-like projections of the fourth thoracic segment 
