a doubtful amphibious Animal of Germany. 259 
from the beginning, and are throughout equally wide; neither 
forming the ducts, nor the remarkable bladders, described in this 
Paper. Notwithstanding this material difference, and many 
others of less consequence, there is no doubt that these two 
animals are nearly allied to each other. 
Having thus given a faithful account of this ambiguous 
animal, and as perfect a one as circumstances enable me to do, 
I shall only express my hopes, that it will be considered as an 
interesting addition to the knowledge of natural history and 
comparative anatomy, whether the animal here described be 
supposed a perfect one, or whether it be considered as the larva 
of some unknown species. To those who may incline to the 
latter opinion, I shall only say, that notwithstanding the most 
careful researches during many years, and the frequent fishing 
in the lakes and caverns of the neighbouring country, at every 
season of the year, no animal has hitherto been detected, of 
which it can possibly be the larva. 
adJ .iO Jinq "isqq;; ' ::i = ■ ./ •. I cl <d::t lo rrorfoonnco odT .3 
LI 2 
