Buprestidæ.--These are rather numerous, many very beautiful species being found in Chili. Nineteen genera are represented in South Temperate America, and 5 of these are peculiar to it; 3 others are South American genera; 2 are Australian, and the remainder are wide-spread, but all are found also in Tropical America. The only north-temperate genus is _Dicerca_, and even this occurs also in the Antilles, Brazil, and Peru. Of the peculiar genera, the largest, _Dactylozodes_ (26 sp.), has one species in South Brazil, and is closely allied to _Hyperantha_, a genus of Tropical America; _Epistomentis_ is allied to _Nascis_, an Australian genus; _Tyndaris_ is close to _Acmoeodera_, a genus of wide range and preferring desert or dry countries. The other two are single species of cosmopolitan affinities. On the whole, therefore, the Buprestidæ are unmistakeably Neotropical in character. Longicorns.--Almost the whole of the South Temperate Longicorns inhabit Chili, which is very rich in this beautiful tribe. About 75 genera and 160 species are known, and nearly half of the genera are peculiar. Many of the species are large and handsome, rivalling in beauty those of the most favoured tropical lands. Of the 8 genera of Prionidæ 6 are peculiar, but all are allied to Tropical American forms except _Microplophorus_, which belongs to a group of genera spread over Australia, Europe, and Mexico. The Cerambycidæ are much more abundant, and their affinities more interesting. Two (_Syllitus_ and _Pseudocephalus_) are common to Australia and Chili. Twenty-three are Neotropical; and among these _Ibidion_, _Compsocerus_, _Callideriphus_, _Trachyderes_, and _Xylocharis_, are best represented. Twenty are {47}altogether peculiar, but most of them are more or less closely allied to genera inhabiting Tropical America. Some, as the handsome _Cheloderus_ and _Oxypeltus_, have no close allies in any part of the world. _Holopterus_, though very peculiar, shows most resemblance to a New Zealand insect. _Sibylla_, _Adalbus_, and _Phantagoderus_, have Australian affinities; while _Calydon_ alone shows an affinity for north-temperate forms. One species of the northern genus, _Leptura_, is said to have been found at Buenos Ayres. The Lamiidæ are less abundant. Nine of the genera are Neotropical. Two (_Apomecyna_ and _Exocentrus_) are spread over all tropical regions. Ten genera are peculiar; and most of these are related to Neotropical groups or are of doubtful affinities. Only one, _Aconopterus_, is decidedly allied to a northern genus, _Pogonochærus_. It thus appears, that none of the Lamiidæ exhibit Australian affinities, although these are a prominent feature in the relations of the Cerambycidæ.