The third volume of the "Transactions of the Linnean Society of London," containing some inte resting papers, appeared in the same year. 1. "Ob servations on some rare Insects, by W. Lewin." 2. "History of three species of Cassida, by the Rev. W. Kirby." 3. " Observations on the Economy of Ichneumon Manifestator, by T. Marsham, Esq." 4. " Observations on the Insects that infested the Corn in 1795, by the same." 5. A most interesting and valuable paper on " The (Estrus or by B. Clark, Esq." In 1798, J. C. Fabricius published the supplement to his " Entomologia Systematica;" which presents to us his system in its latest state, and therefore de. serves to be recorded here.
Class I. ELEUTHEHATA. Jaws naked, free, bear ing palpi Class II. ULONATA. Jaws covered with an ob. Luse mouth-piece or gales.
Class III. SYNISTATA. Jaws elbowed near the base, and connected to the lower lip.
Class IV. PIEZATA. Jaws horny, compressed, and generally elongated.
Class V. ODONATA. Jaws horny and toothed ; two palpi.
Class VI. MITOSATA. Jaws horny, arched ; no palpi, Class VII. UNO6ATA. Jaws horny, unguiculat ed.
Class VIII. POLYGONATA. Jaws many, within the lip.
Class IX. litEls 17euriaTa. Jaws many, without the lip.
sucker.
The first of these classes contains the order Cole optera ; the second, the orders Ortkoptera, Dern/lap tera, and Dictyoptera ; the third, the orders Thysa. tiara, Trickoptera, and a part of the Neuroptera ; the fourth, the order Hymenoptera ; the fifth, the Neuroptera ; the sixth, the class Myria ; the seventh, the class Arachnoida ; the ei th, ninth, and tenth, the class Crustacea ; the e eventh, the order Lepidoptera ; the twelfth, the orders Hemiptera and Omoptera ; the thirteenth, the order Diptera. This system was followed by a very few entomolo gists, and is now entirely set aside.
In the same year, Clairville published an excellent work on the insects of Switzerland, entitled, " En tocoologie Helvetique," in which he has distributed them into the following orders : viz.