NATURAL HISTORY. 
protuberance on the middle of the back, and 
margined sides,—is less common than the pre- 
ceding, but by no means of unfrequent occurrence. 
BUFO. 1. Vuuearrs. The Common Toad. 
Lin. Syst. Nat. (Rana Buro.) The Frog has 
teeth, the Toad has none ;—a perfectly harmless 
animal, and very useful in destroying slugs, 
worms, &c. 
TESTUDO. Imericata. The Hawk’s Bill 
Turtle. Turton’s Brit. Fauna, p. 78, and T. 
Coriacea, Borloses’ Cornw, p. 285; ean only, 
(if at all,) be claimed as an accidental straggler. 
CLASS IV. FISHES. 
ORDER 1, CARTILAGINOUS. 
PETROMYZON. Friuviatitis. River Lamprey, 
Turton’s Trans. of Lin. Syst. Nat. 1. p. 931, 
Wiiloughby’s Ich. p. 104. (LAMpETRA.) In 
the Dart and Teign rivers, entering them early 
in the year, and returning to the sea in summer. 
SQUALUS. 1. Maximus. Basking Shark. 
Syst. Nat. 1. p. 920. 
