500 GEOGRAPHICAL DISTRIBUTION OF INSECTS. 
far more interesting than that of individual species : for 
in considering this we see more evidently how certain 
Junctions are devolved upon certainybnws, and can scan 
the great plan of Providence, in the creation of insects, 
more satisfactorily than by confining our attention to 
the latter. Groups, according to their range, may be 
denominated either p?edo?nmafit, dominant, sub-dominant, 
or quiescent. 
\ . M. Latreille has observed, that where the empire 
of Flora ceases, there also terminates that of Zoology*. 
Phytipliagous animals can only exist where there are 
plants ; and those that are carnivorous and feed upon the 
former, must of necessity stop where they stop. Even 
the gnat, which extends its northern reign so high b , 
must cease at this limit ; while, where vegetation is the 
richest and most abundant, there the animal productions, 
especially the insect, must be equally abundant. I call 
that, therefore, a predominant group, members of which 
are found in all the countries between these points, or 
from the limits of animal-depasturing vegetation in the 
polar regions to the line. 
Generally speaking, the carnivorous insects, whether 
thalerophagous or saprophagous, are of this description. 
Calosoma, which devours Lepidopterous larvae, though 
poor in species and individuals, is widely scattered. Cap- 
tain Frankland found C. calidum in his Arctic journey ; 
C. laterale and curvipes inhabit tropical America c : C. 
Chinense, as its name indicates, is Chinese" 1 ; Mr. Mac- 
3 Geogr. Gener. des Ins. 2. b When I described the 
Melville Island insects for Captain Sabine, I received from him no 
Culices ; but I afterwards saw in his possession a genuine one from 
thence.— K. c Linn. Trans, xii. 380—. n. (5, 7- d Ibid. a. 5. 
