490 GEOGRAPHICAL ZOOLOGY. [part iv. 



determination of the genera, but there can be little doubt that 

 most of them represent important facts in distribution. 



The Nearctic region is comparatively poor in Carabidae. Its 

 more important peculiar genera are, — Diccelus (22 sp.), Pasimachus 

 (17 <z\>),Eurytrichus (9sp.), Sphceroderus (7 sp.), Pinacodera (6 sp.), 

 and others of smaller extent, about 30 in all. It also possesses 

 representatives of a considerable number of Palsearctic genera, 

 as already indicated ; and a few of South American genera, of 

 which Helluomorpha and Galcrita are the most important. 



The Neotropical region is very rich in peculiar forms of Cara- 

 bidse, as in almost all other great groups. It possesses more than 

 100 peculiar genera, but about 30 of these are confined to the 

 South Temperate sub-region. The more important peculiar genera 

 of Tropical America are, — Agra (144 sp.), Ardistomus (44 sp.), 

 Schizogenius (25 sp.), Pelecium, (24 sp.), Calophcna (22 sp.), 

 Ctenodo.^yla (7 sp.). Among the Chilian and South Temperate 

 peculiar forms are, — Antarctia (29 sp.), Scelodontis (10 sp.), Tropi- 

 dopterus (4 sp.). Among the Neotropical genera with outlying 

 species are, — Pachyteles (50 sp.), one of which is West African; 

 Selenophorus (70 sp.), with 4 African, 4 Oriental, and 1 from New 

 Caledonia; Ega (11 sp.), with one in the East Indies, and one in 

 New Caledonia ; Galcrita, with 36 American species, 8 African, 

 and 3 Indian ; Callida and Tetragonoderus, mostly American, 

 but with a few African, Oriental and Australian species ; and 

 Pseudomo?yha, common to America and Oceania. 



The Australian region is almost equally rich, possessing about 

 95 peculiar genera of Carabidae, no less than 20 of which are con- 

 fined to New Zealand. The most important are, Carenum, Pro- 

 mccoderus, Scaraphitcs, Notonomus, JEnigma, Sphallomorpha, Sil- 

 phomorpha, and Adelotopus. The gigantic Catadromus has 4 

 Australian species and 1 in Java ; Homalosoma has 31 species 

 in Australia and New Zealand, and 1 in Madagascar. Celebes 

 and New Guinea have each peculiar genera, and one is common 

 to Australia and the Cape of Good Hope. 



The Oriental region possesses 80 peculiar genera, 10 of which 

 are confined to Ceylon. The more important are, — Pericallas, 

 Planetes. and Mormolyce. Distrigiis is also characteristic of this 



