Cicindelidæ.--We find here examples of 15 out of the 35 genera of these insects; and 10 of these genera are peculiar. The most important are _Oxychila_ (11 sp.), _Hiresia_ (14 sp.), and _Ctenostoma_ (26 sp.). _Odontochila_ (57 sp.) is the most abundant and characteristic of all, but is not wholly peculiar, there being a species in the Malay archipelago. _Tetracha_, another large genus, has species in Australia and a few in North America and Europe. The small genus _Peridexia_ is divided between Brazil and Madagascar,--a somewhat similar distribution to that of _Urania_ noticed above. One genus, _Agrius_, is confined to the southern extremity of the continent. Carabidæ.--Besides a considerable number of cosmopolitan or wide-spread genera, this family is represented by more than 100 genera which are peculiar to the Neotropical region. The {16}most important of these are _Agra_ (150 sp.), _Ardistonus_ (44 sp.), _Schizogenius_ (25 sp.), _Pelecium_ (24 sp.), _Calophena_ (22 sp.), _Aspidoglossa_ (21 sp.), and _Lia_, _Camptodonotus_, _Stenocrepis_, and _Lachnophorus_, with each more than 12 species. These are all tropical; but there are also a number of genera (26) peculiar to Chili and South Temperate America. The most important of these are _Antarctia_ (29 sp,), all except two or three confined to South Temperate America; _Scelodontis_ (10 sp.), mostly Chilian; _Feronomorpha_ (6 sp.) all Chilian; and _Tropidopterus_ (4 sp.), all Chilian. _Helluomorpha_ (18 sp.), is confined to North and South America; _Galerita_, _Callida_, and _Tetragonoderus_, are large genera which are chiefly South American but with a few species scattered over the other tropical regions, _Casnonia_ and _Lebia_ are cosmopolite, but most abundant in South America. _Pachyteles_ is mostly South American but with a few species in West Africa; while _Lobodonotus_ has one species in South America and two in Africa. Lucanidæ.--The Neotropical species of this family almost all belong to peculiar genera. Those common to other regions are _Syndesus_, confined to Tropical South America and Australia, and _Platycerus_ which is Palæarctic and Nearctic, with one species in Brazil. The most remarkable genus is undoubtedly _Chiasognathus_, confined to Chili. These are large insects of metallic green colours, and armed with enormous serrated mandibles. The allied genera, _Pholidotus_ and _Sphenognathus_, inhabit Tropical South America. _Streptocerus_ confined to Chili, is interesting, as being allied to the Australian _Lamprima_. The other genera present no remarkable features; but _Sclerognathus_ and _Leptinoptera_ are the most extensive.