Longicorn beetles of Japan. Additions, chiefly from the later collections of Mr. George Lewis; and notes on the synonymy, distribution, and habits on the previously known species

ON THE LONSICOEN BEETLES OE JAPAN. 205 Loagicorn Beetles of Japan. Additions, cliiefly from the later Collections of Mr. George Lewis ; and Notes on the Syno-nymy, Distribution, and Habits of the previously known Species. By H. W. Bates, F.R.S., F.L.S. (Read 5th June, 1884.) [Plates I. & II.] The present paper is essentially a supplement only to a former paper published on the same subject in the ' Annals and Magazine of Natural History' for 1873, vol. xii. ; but ifc is a supplement which in extent greatly surpasses the original, the number of species of this conspicuous Coleopterous family recorded in the first paper beingl07, and the present paper containing 129, making a total of 236 species now known as belonging to the Japanese Fauna in this department. This great accession to our knowledge is due almost entirely to the labours of Mr. Lewis and the native collectors directed by him, on his second visit to the islands in 1880-81. It is sufficient to glance at the two lists — the original one, published in 1873, and the following supplemental one — to see how large a proportion of the new species (and ifc is the same with the species known elsewhere now detected in Japan) is due to the labours of Mi\ Lewis. In the introductory paragraphs to my former paper I made a few remarks on the relations of the Fauna o£ Japan as regards the Lougicornia to those of other regions, pointing out chiefly the very strong tropical element and the absence of many charac-teristic palsearctic genera. I have also discussed the question of faunistic relations in two other papers published on the Geode-phagous Coleoptera of Japan. In my first enumeration of the Japanese Longicornia, I remarked that 21 genera out of the total of 64) were tropical genera, i. e. genera found nowhere but within the tropics. In the present supplement only 6 of the 57 genera added to the original 64 are known as tropical ; but the number must be increased if we are to add the many abso-lutely new genera (such as Leptoxenus, PyrrJiona, Corennys, Xeni-cotela, &c.), which have tropical, and not palaearctic, affinities. Still, upon the whole, our supplementary list must be considered as diminishing the proportion of tropical forms in the Longicorn Fauna of Japan, a large number of European, Siberian, and North-LINN. JOUBN. — ZOOLOGY, YOL. XYIII. 15