364 O. C. Marsh on the Metamorphosis of 
Art, XXX VIT.—Observations on the Metamorphosis of Sire- 
don into Amblystoma ; by O. C. Marsu, Professor of Pa- 
leontology in Yale College. With a plate, _ 
or from the long journey. They all fed readily upon worms e 
and insects, and occasionally came to the surface and inaled ; 
air 
b at a wees 
pete on the sides 
8 
Small round spots of dark brown were first 2 
49, 1867. 
‘ * Comptes Rendus, tome Ixi, p. 775, 1865, and tome Ixy, p. 24% Z 
