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CHAP. XXI.] INSECTS. 489
countries all over the globe ; but many of these are more abun-
dant in the Palsearctic region than elsewhere. Such are Scarites,
Calosoma, Brachinus, Cymindis, Lehia, Cklccnms, Platynus, Har-
'pcdus, Bemhecidium, Pcecilus, and Argutor. Of tropical cosmopo-
lites, or genera found in all the tropical regions, but not in the
temperate zones, there seem to be only four,
—
Catascopus, Cop-
todera, Colopodes, and Caasnonia. Pheropsophus is confined to the
tropics of the Old World ; while Drimostoma, though widely
scattered, is characteristic of the Southern Hemisphere.
The Palsearctic region has about 50 genera of Oarabidae which
are strictly confined to it, the most important being,
—
Leistus
(30 sp.), Procerus (5 sp.), Procrustes, (17 sp.), Zabrus (60 sp.),
Pristonychus (42 sp.), and Ophomis (60 sp.) ; but it possesses a
large number in common with the ISTearctic region. The more
remarkable of these are,
—
Cardbus, Nebria, Amara, Cyrtonotus,
Bradycellus, Anopthalmus, Celia, Gychrus, Patrohus, Elaphrus,
NotiopMlus, Bradytus, Callisthenus, Blethisa, and several others.
Many too, though not strictly confined to the North Temperate
regions, are very abundant there, with a few species isolated in
remote countries, or widely scattered, often in an eccentric man-
ner. Among these may be mentioned, Trechus (120 sp.), all
North Temperate but 8, which are scattered in Java, New Cale-
DyscUrus (127 sp.), North Temperate,
donia and South America ;
with 3 or 4 species in Australia, China and La Plata ;
Omaseus,
(88 sp.), Steropus (90 sp.), Platysoma (114 sp.), and Pterostichtis
(138 sp.), are mostly North Temperate, but each has a few
species in the South Temperate zone. New Zealand, AustraHa,
Chili, and the Cape of Good Hope. Dromms (54 sp.), is about
two-thirds Palsearctic, the rest of the species being scattered over
the world, in Chili, North and South America, South Africa,
Burmah, Ceylon, and New Zealand. The North Temperate
genera Calathus and Olisthopvs, have each one species in New
Zealand ; Perms has most of its species in South Europe, but 3
in Australia; Ahax is confined to the north temperate zone,
but with one species in Madagascar while Lcemosthenes is said
to have a species identically the same in South Europe and
Chili. Some of these apparent anomalies may be due to wrong