STRAIT-LIPPED WARTY-NEWT. 141 
several in the British Museum, where they were confound- 
ed with the 7. cristatus. Upon a careful comparison of 
the whole, I am induced to consider that the new English 
species is distinct from 7. marmoratus, and that it is not 
only new to the British Fauna, but a hitherto undescribed 
species. I have, therefore, ventured to assign to it a specific 
name, and I have chosen that at the head of this article, as 
a proper compliment to the first of Erpetologists, and one 
of the most amiable of men.* 
The principal distinctions between the species are the 
following:—In Triton Bibronii the skin is remarkably 
rugous, and the tubercles are more numerous and more 
elevated than in 77. cristatus. The tubercle at the base 
of the inner toe on each foot is much smaller, and in some 
cases scarcely perceptible. The most tangible peculiarity, 
however, is in the form of the upper lip, which in the pre- 
sent species is perfectly straight, whereas in 7’. cristatus 
it considerably overhangs the margin of the lower jaw. 
By this character the two species may be at once distin- 
guished. With regard to coloration and markings there 
is but little difference; I have thought, however, that 
the present species is somewhat darker, and the spots on 
the sides less distinct. 
The structural characters which distinguish 7r. Bibronit 
from Tr. marmoratus, are also comparative and slight. In 
the latter, the rugosity of the skin is less considerable, and 
the upper lip, instead of being absolutely straight as in our 
* This talented and amiable man has, during the passing of this edition 
through the press, fallen a victim to consumption, which had for years been 
making its secret inroads upon his constitution, In the midst of the awful 
scenes of the late Revolution in France, surrounded by the fury of faction and 
the horrors of civil war, his gentle spirit passed into its rest, happier than those 
who survived him in having been spared the later scenes of that sanguinary and 
most disgusting conflict. 
