GEOGRAPHICAL DISTRIBUTION OF INSECTS. 493 
fessor Peck. The splendid genus Carabus ranges still 
further north than Melée. A very fine species (C. cri- 
bellatus Adams) inhabits the polar regions of Siberia?; 
but the metropolis of the group appears to be the tem- 
perate zone: some, however, have been found in northern 
Africa; and Sir Joseph Banks captured one in Terra del 
Fuego. Of those whose range is between the tropics 
and 50° N.L. we may begin with Cicada Latr. One 
species, indeed, was found by Mr. Bydder a little higher, 
near the New Forest, Hampshire; but, though anxiously 
sought for, it has not since been discovered>. It seems, 
therefore, to admit of some question whether this is ab- 
original as British, and may not by some accident have 
been imported*. We may take Scoléa for an example of 
a subdominant group beginning more southward. Its 
species first appear about 43° N. L., and abound in warm 
climates. In general most of those insects which M. La- 
treille denominates meridional,—such as Scarabeus M‘L.., 
Onitis, Brentus, Scarites, Mantis, Fulgora, Termes, Scor- 
pio, &c.—come under the present head, and in fact all 
tropical forms that wander to any distance within the 
above limits from their metropolis. 
4. By quiescent groups I mean those that have none, 
or no high range as to latitude, from their centre or metro- 
polis. I say as to latztude, because these groups have often 
an extensive one as to longitude. ‘Thus, Mr. W.S. Mac- 
Leay has remarked to me, that Golzathus Lam. appears 
* Fischer Entomogr. Russ. 90—. t, viii. f. 13. 
-b Since the above was written, it has been stated to me that two 
were taken this year in the New Forest. 
* The same observation applies to Forficula gigantea, found at 
Christ-Church by Mr. Bingley, but which, though often sought for, 
has never since been taken there. 
