by the Col de Tende, a very sudden change is perceptible* These
remarks may have exceptions, relative to aquatic species* We
are acquainted withlnteotg whole habitation exttelÊd&Fery faPk
The thistle-butterfly, termed “ La Belle Dame,” so- common in
our climate, and even in S weden, is found in the Cape of Good
Hopei New Holland likewise has a species very near to it.
The sphinx of the nerion, and sphinx celerio, have for their
northern boundary our climate* and the Isle of France rfor
4hèh southern, liihit. Among the aquatic insects, the dytiSem
griseuz. inhabiting the waters of the ekdevant Provepier^ad
o f Piémont, is not tmcommon in Bengal.
I t appears from some further observations by tile same
writer, that the distribution óf genera and th e species; composing
them, in this department of the animal creation bears
some analogies" to those general facts, which we haveohséryed
in the dispersion of plants, and to the laws of geographical
d ifih sio nw h k h prevail-in other departments of ./zoology.
M. Latreille was aware of this relation. He remarks, for example,
an approximation in the entomology of America to
that of the Austral countries and the eastern .parts, of Asia.
B u t this observation refers to genera of which particular
species are the peculiar stock, of eae;b ’Country, and not ;tq
any example in which the same species is found in separate
regions. The insects of New Holland are often Qf/tl$e same
genera with those of the Moluccas, and the south eastern parts
of India: they have much affinity with those-<pf New,Zealand
and New Caledonia, and generic relations, as we hgpi
observed, with those of America:.yet the entomology of
New Holland has,- according to Mr. Lafcrefllj^a peculiar
type- : . v .
Many instances have been pointed out by naturalists in
which tribes of insects existing in one region, but absent in
another where the climate isparallel and the local conditions
apparently similar, are replaced by analogous groupes, The
honey and wax of Europe, Asia, and Africa, are prepared by
bees of the sqme genus with our common hivq-bee.. In America,
this genus is not to be found in the native state, bu t is
replaced by Melipona and Trigona ; and in New Holland, by
a still different but undescribed. representative. The Melolonthidm
and Rutelidse of the old and new world, are repre-
s l^ e d in T # ra Australis by the brilliant and numerous Ano-
plognathidse. ‘ The Rhipieera of the Brazils is of a different
type from that »bf. New Holland. The singular genus Cre-
masfocheilus offeNorth America has . the Genhnhijs K. for its
representative a p Africa, and tbe.Lucani of other countries
giye place in New Holland to the Lamprima of Latreille> and
the Ryssbhótu's óf M‘Leay.#=
= M.M. Kirby! and Spencè have enumerated sÓmp ° f the
principal generaqf. jnsects which*. impart a peculiar entomological
character to different,regions.,. They observe,„Bigtthe
gepéfa Mansticpfi, Graphipterus, Glaplegoug, Eurycliora,
Pneiamora, Masaris, and mahy others, -are peculiar to Africa.
In Asia alone we find Mimela1, Euchlo(ra, Collinris, -Cutasco-
pus, Apogdnia, a peculiar form of Horia. In America, Agm,
Galerita, Nil-ion, an e tb e ^ y p e of Horia, ■ Teteaenyx, Rutelia,
x Boryphora, Alcernus, Erotylps, Scotinus,VGupes, Corydglis,
Labiolugj jHelieonia, Castnia. I n New Holland, IIcllulo,
Edephastomas, Anoplognathus; Agrotiphila, Cerapterus, Helens;
AdeliUm, ParOpsfes, AchiruS, Thynnus,
Section I I I .— O f the dispersion o f Birds.
The geographical distribution of birds has, seldom engaged
the attention off zoological writers, and with the exception of
Professor llligqr’s;* “ Tabellarische lTebersicht,/’-|- in which the
abodes of 3800 Species were the subject of inquiry,; scarcely
any systematic attempt has been made to elucidate this department
of natural history. The ornithology of many extensive
regions,, abounding in tribes of birds, has been as yet
SO imperfectly explored, that it would be inppossible for any
naturalist of the present day, to treat this subject with an
extensive and satisfactory examination of all its bearings.
Buffbn imagined the total number of species existing in the
class of birds to be about 2000. It has been stated, that
* M. M. Kirby and Spence’s System of Entomology.
*|* Tabellarische Uebersicbt der Verkeilung der Vögel über die Erde. AWandlungen
der K. Akademie der'Wissenschaften in Berlin, b. x.