14 
Alaria, Terebratula and Rhynchonella. The upper Lias contains 
many ammonites and small shells, both univalves and bivalves, 
but the hard limestone, locally termed the “‘ fish bed,” yields 
the most interesting suite of fossils, including the remains 
of insects (wings, elytra of beetles, &c.), and a perfect dragon- 
fly, discovered by Mr. Brodie, Sepia with the ink-bag, 
Belemnite with ink-bag and sepiaceous portion, Crustacea and 
several species of fish, of which Leptolepis concentricus is the 
most common, and Tetragonolepis discus the most scarce. None 
of these are of large size, if we except a fine specimen of 
Lepidotus, found at Gretton, in Lord Ducie’s collection and a 
species of Sauropsis in Miss Holland’s cabinet. 
The larger Pachycormi, so characteristic of the upper Lias at 
Ilminster, in Somersetshire, are scarcely represented here, but 
many species occur in the same stratum at Whitby. Among the 
plants the frond of a new species of small fern was the most 
interesting. 
