The Cetoniidæ (_Gemm. and Har. Cat._, 1869) show, for North China and Japan, three Oriental to two Palæarctic genera. The Buprestidæ collected by Mr. Lewis have been described by Mr. Edward Saunders in the _Journal of the Linnæan Society_, vol. xi. p. 509. The collection consisted of thirty-six species belonging to fourteen genera. No less than thirteen of these are known also from India and the Malay Islands; nine from Europe; seven from Africa; six from America, and four from China. In six of the genera the Japanese species are said to be allied to those of the Oriental region; while in three they are allied to European forms, and in two to American. Considering {230}the southern latitude and warm climate in which these insects were mostly collected, and the proximity to Formosa and the Malay Islands compared with the enormous distance from Europe, this shows as much Palæarctic affinity as can be expected. In the Palæarctic region the group is only plentiful in the southern parts of Europe, which is cut off by the cold plateau of Thibet from all direct communication with Japan; while in the Oriental region it everywhere abounds and is, in fact, one of the most conspicuous and dominant families of Coleoptera. The Longicorns collected by Mr. Lewis have been described by Mr. Bates in the _Annals of Natural History for 1873_. The number of species now known from Japan is 107, belonging to sixty-four genera. The most important genera are _Leptura_, _Clytanthus_, _Monohammus_, _Praonetha_, _Exocentrus_, _Glenea_, and _Oberea_. There are twenty-one tropical genera, and seven peculiar to Japan, leaving thirty-six either Palæarctic or of very wide range. A number of the genera are Oriental and Malayan, and many characteristic European genera seem to be absent; but it is certain that not half the Japanese Longicorns are yet known, and many of these gaps will doubtless be filled up when the more northern islands are explored. The Phytophaga, described by Mr. Baly, appear to have a considerable preponderance of tropical Oriental forms. A considerable collection of Hymenoptera formed by Mr. Lewis have been described by Mr. Frederick Smith; and exhibit the interesting result, that while the bees and wasps are decidedly of tropical and Oriental forms, the Tenthredinidæ and Ichneumonidæ are as decidedly Palæarctic, "the general aspect of the collection being that of a European one, only a single exotic form being found among them."