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DAPEDIUS. 
The fragment of Dapedius from Ilminster, like those from 
Whitby, is too imperfect for specific determination. Fine com- 
plete examples, however, occur in Germany, and a few are known 
from France. 
CATURUS. 
The Moore Collection comprises one very fine and apparently 
unique specimen of a species of Catwrus. Fragments either of the 
same or a closely-allied species from Whitby, are preserved in the 
Museums of Whitby and York; but no undoubted member of 
this genus has hitherto been described from the Upper Lias, 
although it is common in the Lower Lias below and in the Upper 
Oolites above. It is typically represented in the lithographic 
stone (Lower Kimmeridgian) of Bavaria, by the species of which 
the skeleton is shown in the accompanying Fig 1. 
The interest of Catwrus consists in its being almost identical in 
the head, internal skeleton, and fins, with the rhombic-scaled 
Eugnathus, though covered with thin deeply-overlapping scales. 
The only thick scales are retained on the little obtuse upper lobe 
of the tail (as well shown in the Ilminster specimen). Whereas 
all the scales of Lugnathus are thick and mostly united with peg- 
and-socket joints, those of Catwrus unite solely by overlap, tend 
to lose their enamel, and become almost cycloidal. There can be 
little doubt, indeed, that the two fishes belong to one and the 
same family, and that the thin-scaled Caturus, which becomes 
“dominant” much later than Eugnathus, is a true link between 
the latter and the modern Amia, which now lives in the fresh- 
waters of North America. 
As regards the specific determination of the Ilminster fish, it 
seems inadvisable to suggest a name for it without making 
detailed comparisons. Some of its principal characters, however, 
may be enumerated as follows :— 
The length of the head with opercular apparatus is about equal 
to the maximum depth of the trunk, or perhaps slightly less, and 
