26 
CEXTRAL HALL. 
JBay V. 
Structure of 
Jlshes and 
Xancelet. 
and blind 01m (Pro- 
teus) from the caves 
of Carniola; as also 
are the so-called 
Cecilians, or Apoda, 
which have the habits 
and, to some degree, 
the appearance of large 
worms. Special speci- 
mens exhibit the 
structure of the ex- 
tinct Labyrinthodonts, 
in which the hinder 
half of the skull is 
completely roofed over 
by bone ; while the 
teeth in many cases 
exhibit a curious in- 
folded arrangement 
from which the group 
derives its name. 
The last bay (No. V.) 
on the west side of 
the Central Hall is de- 
voted to the display 
of the form and struc- 
ture of Fishes, and of 
that remarkable little 
creature the Lancelot, 
formerly included 
among the Fishes, but 
now regarded as the 
representative of a 
class of itself — the 
Cephalochorda. 
The wall-case on the 
left side of this ba}' 
exhibits the external 
ibrm of several charac- 
