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 Scarries, 

 ('alosoma, Brachinus, Cymindis, Lebia, Chlccnius, Platynus, Har- 

 palus, Bembecidium, Pcccilus, 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 Carabidae 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 Ophonus (60 sp.) ; but it possesses a 

 large number in common with the Nearctic region. The more 

 remarkable of these are, — Carabus, Nebria, Amara, Cyrtonotus, 

 Bradyccllus, Anopthalmus, Celia, Cychrus, Patrobus, Elaphrus, 

 Notiopldlus, Bradytus, Callisthenics, 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- 

 donia and South America ; JDyschirus (127 sp.), North Temperate, 

 with 3 or 4 species in Australia, China and La Plata ; Omaseus, 

 (88 sp.), Steropus (90 sp.), Platysoma (114 sp.), and Pterostichus 

 (138 sp.), are mostly North Temperate, but each has a few 

 species in the South Temperate zone, New Zealand, Australia, 

 Chili, and the Cape of Good Hope. Dromius (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, 

 Burniah, Ceylon, and New Zealand. The North Temperate 

 genera Calathus and Olisthopus, have each one species in New 

 Zealand ; Percus has most of its species in South Europe, but 3 

 in Australia; Abax 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 



