42 
3. A series of fish parasites, both external, such as 
Caligus, Lernea, Chondracanthus, Anchorella, 
Pontobdella, and Saprolegnia (the Salmon disease 
fungus) ; and internal parasites, such as Cestode 
and Nematode worms. 
4. A series of the ripe eggs of our chief food fishes. 
The fishes chosen are as follows :—Sole, Plaice, 
Witch, Scald fish, Lemon Sole, Dab, Haddock, 
Gurnard, Cod, Anchovy, and Lumpsucker. With 
the exception of the Lumpsucker, whose eggs 
sink in the water, and are, consequently found 
on the bottom or attached to sea-weeds, all these 
fishes’ eggs are pelagic, or float at or near the 
surface of the sea. The small size and trans- 
parent appearance of most of them will be 
noticed. 
5. Specimens of the Sole (Solea vulgaris) and the 
Solenette (S. lutea) at various stages of growth 
to show the similarity and the distinction between 
these two fishes. The only possibility of con- 
fusion is between the adult Solenette, which never 
erows larger than four or five inches in length, 
and the young Sole of about that size (see the 
specimens in the jars). Besides the occasional 
black stripes which the Solenette has in its 
dorsal and ventral fins (each sixth or seventh 
ray being coloured a deep black), the more sandy 
colour, the rougher appearance, and a difference 
in the arrangement of the tags around the mouth, 
there is also a considerable difference in the 
scales, as is shown in the figures and description 
appended to the exhibit. 
