COLEOPTERA. 367 



In the first Trichidesihe mentum is either isometrical, or longer than 

 wide, and leaves the maxillae exposed. It comprises the 



TRICHIUS, Fabricius. 



T. nobilis. About an inch long; golden-green above; cupreous with yel- 

 lowish-grey hairs beneath. On umbelliferous plants. 



The female of the T. hemipterus and those of some other species of North 

 America are remarkable for the horny ovipositor at the posterior extremity of 

 their abdomen, by which they effect a lodgement for their ova. 



These species are generally found on the ground, where they move very 

 slowly. There are two other genera, Platygenia and Cremastocheilus. 



The second division, Goliaihides, is distinguished from the preceding by the 

 mentum, which is much longer, wider, and covers the maxillae. 



GOLIATH, Lambert, Kirk. CETONIA, Fabricius,, Olivier. 



A subgenus which, according to M. de Lamarck, is composed of large and 

 beautiful species, some of which inhabit Africa and the East Indies, and the 

 others tropical America. Messrs. Lepeletier and Serville have separated the 

 latter from it under the generic appellation of INCA. The epimera is not pro- 

 minent. The inner sides of the thighs of the two anterior legs are furnished 

 at base with a tooth and an emargination. The middle of the superior margin 

 of the mentum is strongly emarginated ; this part in the true Goliaths presents 

 four lobes or teeth, two superior and the two others lateral. The labial palpi 

 are inserted on its edges in the emarginations of these latter lobes. All the 

 known species are large. 



In the third division of the Melitophili, a section corresponding to the family 

 of the Cetoniidce, Mac Leay, the sternum is prolonged more or less into an 

 obtuse point between the second pair of legs; the epimera or axillary piece is 

 always apparent above, and occupies ah 1 the space that separates the posterior 

 angles of the thorax from the base of the elytra ; the thorax usually becomes 

 widened posteriorly, and has the form of a triangle truncated anteriorly or at 

 the point. The mentum is never transversal, and its superior edge is more or 

 less emarginated in the middle. The terminal lobe of the maxillae is silky or 

 penicilliform. The body is almost ovoid, and depressed. 



This division comprises the genus 



CETONIA, Fabricius, 



Or what we commonly term Goldbeaters. Those of Europe are provided 

 with a scutellum of an ordinary size. Such are the 



C. aurata,. Nine lines in length; brilliant golden-green above; cupreous- 

 red beneath ; white spots on the elytra. Common on flowers, and frequently 

 on those of the Rose and Elder. 



In the second tribe of the Lamellicornes or the LUCANIDES, so called from 

 the genus Lucanus of Linnaeus, the antennal club is composed of leaflets or 

 teeth arranged perpendicularly to its axis in the manner of a comb. These 



