10 
Lepeophtheivus pollachii, Bassett Smith. 
Attached to the inside of the mouth of the pollack. 
Trebius caudatus, Kroyer. 
On the skin and inside the mouth of various species of 
Raia. The pink colour of the living animal renders its 
presence easily visible to the naked eye. 
Lehthrogaleus coleoptratus (Guerin). 
On the skin of the picked dog-fish, Squalus acanthias, 
but not of very frequent occurrence. The ovisacs are very 
slender and of great length. 
Pandarus bicolor, Leach. 
Also occasionally found on the skin of the picked 
dog-fish. It has been recorded by other observers from 
Galeus canis (tope), Scyllium catulus (greater spotted 
dog-fish), and Carcharias glaucus (the blue shark). 
Dichelestium sturionis, Kroyer. 
A large white cylindrical species only found in the 
gill chamber of the sturgeon. The fish is not often 
caught in the district, and this makes the parasite rather 
rare. 
Clavella labracis, van Beneden. 
This is a very small parasite, egg-bearing females 
beig scarcely one millimetre in length. It usually 
occurs in abundance, however, and is found on the gills 
of the wrasse, Labrus miatus and L. maculatus. 
Cycnus pallidus (van Beneden). 
A small slender species, sometimes very common, on 
the gills of conger. 
Kudactylina acuta, van Beneden. 
Attached to the gills of the angel-fish, Rhina 
sqguatina. A number of specimens are found on each 
moderately-sized fish. 
