38 
glass with water, the copepods, if present, can easily be 
seen. 
Caliqus curtus, Muller. 
A very common species, and may be found on various 
kinds of fishes, cod, ling, hake, plaice, &c. 
Caligus rapaxr, M. Kdwards. 
Also a very common species and as widely distributed 
amongst fishes as the former. The males and immature 
females are often taken in tow-net collections. 
Caliqus diaphanus, Nordmann. 
In the gill chamber of the common gurnard and 
yellow gurnard, occasionally moderately frequent. 
Caligus gurnardi, Kroyer. 
The only record of this species from the district is 
the one by my late colleague and fellow-worker, I. C. 
Thompson, whose reports have been of much service in the 
preparation of the present lst. The specimen was 
obtained from dredged material and had evidently been 
detached from its host. 
Caligus brevicaudatus, A. Scott. 
This is a moderately large species, 5°3 mm., and has 
only so far been found in the mouth of the common gur- 
nards caught at Piel. 
Caligus labracis, 'T. Scott. 
Frequently found attached to the gills of the wrasse. 
Caligus scombert, Bassett Smith. 
Occasionally found in the gill chamber of the 
mackerel. 
Caligus minimus, Otto. 
This well-marked species is sometimes very common 
in the mouth of the bass, Labrae lupus. 
