COLEOPTEROUS INSECTS. 
127 
these two, the former is the most abundant in the 
northern counties of Scotland, and the elevation at 
which it is found on the mountains shows it not to 
be abhorrent even of a more northern climate. The 
latter occurs in considerable numbers in the north- 
west district of Sutherlandshire, and, next to C. gla- 
bratus, is the most common species, C. catenulatus 
becoming scarce, and the specimens small and 
dwarfish, which may be assumed as an indication 
of its having nearly reached the natural limit of its 
extension in a northern direction.* 
The genus Tefflus, which was first constituted 
by Dr Leach, differs from the two preceding genera 
in having the labrum or upper lip entire or with- 
out any notch. It includes only a single species, 
which has been named after a celebrated naturalist 
of Vienna. 
TEFFLUS MEGERLEI. 
PLATE II. Fig. 3. 
Carabus Megerlei, Fabricitis , Syst. Eleuth. p. 1G9. — De- 
jean , Spec. Gcncr. ii. p. 21. 
This insect is seldom much short of two inches 
in length. It is entirely of a uniform glossy black 
• In a recent expedition to explore the natural pro- 
ductions of Sutherlandshire, upwards of forty specimens 
of C. clathratus were procured, and C. glabratus might 
have been obtained almost in any number. 
