43 
being little over half a millimetre in length, and usually 
found on the abdomen of the female. 
Thysanote impudica (Nordmann). 
A moderately rare species and only appears to be 
found on the gill rakers of T'r2gla hirundo. 
Lernanthropus kroyeri, van Beneden. 
At first examination this species might be mistaken 
for Chondracanthus merluccii, but can easily be distin- 
guished from that parasite by the structure of the appen- 
dages. Only found on the gills of the bass, Labraw lupus. 
Its deep brown colour makes it a conspicuous object 
amongst the bright red coloured gill filaments. 
Charopinus dalmanni (Retz.) 
This species appears to be confined to the spiracles of 
the grey skate, 2. batis, where it is anchored by the large 
second maxillipedes. It is of large size and sometimes 
measures nearly 24+ inches from the apices of the second 
maxillipedes to the end of the ovisacs; usually only one 
specimen is present in a spiracle, but occasionally two 
and three specimens are found in one spiracle. 
Charopinus ramosus, Kroyer. 
A much smaller species than the last, being only 
about one-fourth the size. It has quite a different habitat 
from that of C. dalmannz, and is found attached to the 
gills and gill rakers of Raia clavata and R. maculata. 
third species, U. dubius, T. Scott, is found on the gill 
rakers of 2. ctreularis and Lt. fullonica. It has not been 
recorded from the Ivish Sea but we have taken it from FR. 
fullonica captured off Dubh Artach and landed at Fleet- 
wood by one of the trawlers. 
Lerneopoda galei, Kroyer. 
On the claspers and fins of the lesser spotted dog- 
