STRAIT-LIPPED WARTY-NEWT. 141 



several in the British Museum, where they were confound- 

 ed with the Tr. cristatus. Upon a careful comparison of 

 the whole, I am induced to consider that the new English 

 species is distinct from Tr. 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 JBibronii the skin is remarkably 

 rugous, and the tubercles are more numerous and more 

 elevated than in Tr. 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 Tr. 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 Tr. Bibronii 

 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. 



