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Show 564 INSECTA. TnrPLAX, TRITOMA, Fab. These Insects differ from the Erotyli in theit· antennre, which are almost granose, and terminated in a shorter and ovoid club, and in their maxillce, of which the interior division is membranous with a single and small terminal tooth.. . Those which are almost hemtsphencal or nearly round form the genus THITOMA of Fabrici~s. Such is t~e . T. bipustulatum, Ohv., Col. 89, b~s, I, 5. Black, with a large red spot at the base of each elytron. In the Boleti and Mush. rooms( 1). Those which are oval or oblong form the genus TRIPLAX proper of the same naturalist(2). In the other the last joint of the maxillary palpi is elongated, and more or less oval. LANGUIRA, Lat. Oliv.-Trogosita, Fab. Where the body is linear and the antennal club consists of five joints. They are all foreign to Europe(3). PHALAoRus, Payk.-Anistoma, Illig. Fab.-Anthribus, Geoff. Oliv. Where the body is almost hemispherical and the club of the an· tenore consists of but three joints( 4). On flowers and under the bark of trees. In the remaining Clavipalpi all the joints of the tar!li are -simple, and the body is nearly globular. They form the genus AGATHIDIUM, Illig.-Anisotoma, Fab.( 5) In the fourth section of the Coleoptera, that of the TRntE· RA, there are but three joints to all the tarsi. The Trimera form three families. Those of the two first are closely related to the last of the Tetramera. Their antennre, always com· ( 1) Fa b., Syst. Eleut. . (2) Fn.b., lb. See Oliv., Col. V, 89, his, genus Triplax. The TritO'TM), Geoff., are Mycetophagi. ( 3) Lat., Gener. Crust. et Insect., III, p. 65, I, xi, 11; Oliv., Col. V, 88. .Add the Trogositce elongata andfiliformia, Fab. ( 4) See Gyll., Insect. Suec., and Sturm, Faun. Germ., II, xxx, xxxii. (5) See the Faun. Germ., Sturm, and the Insect. Suec., Gyll., &c. COLEOPTERA. 565 posed of eleven joints(l ), terminate in a club formed b th three last, .which is compressed and in the form of a rev:rse: co. ne. or •t riahn gle. The first joint of the tarsi is alwa , 1 . . ys very dis~mct, t e penu tlmate 1s u~ually bilobate, and the last, which presents a knot at base, IS always terminated by two hooks. The elytra entirely cover the ab~omen and are not truncated. The last of the Trimera, or those of the third family, in this character, as well as in several others, approximate to the Pentame~ous Brachelytra, and some other Coleoptera of the same sectwn, such as the Mastigi and Scydmreni. their habits are also very different from those of the othe; Trim era. FAMILY I. FUNGICOL.IE. In our first family of this section we observe antennre longer than the head and thorax united, an oval body, and a trapezoidal thorax. The maxillary palpi are filiform or a little thicker at the end, but are terminated by a very large and securiform joint. The penultimate joint of the tarsi is always deeply bilobate. This family may be reduced to one great genus. EUMORPHUS. In some the third joint of the antennce is much longer than the preceding and following ones. Such are EuMORPnus, Web. Fab. Or the Eumorphi proper, where the club of the antennce is abrupt, compact, strongly compressed, and in the form of a reve1·sed triangle. The maxillary palpi are filiform, and the two last joints of the labials united form a triangular club. They are all peculiar to America and the East Indies(2). (1) In Clypeaster I counted but nine; the Insects, however, are so small that there may have been some mistake. (2) See Fab., Oliv.-Col. VI, 99-Schrenh., and Lat.-Gener. Crust. et Insect. |