ORDER COLEOPTEUA. 497 



a narrow, elongated, and silky lobe; those of the others are 

 entirely corneous and denticulated. The tongue, in the 

 greater number, is formed of two small silken pencils, more 

 or less projecting beyond a chin which is almost semicircular 

 or squared. The anterior feet are most frequently elongated, 

 with the legs denticulated all along their external side. The 

 tarsi terminate in two equal simple crotchets, with a small 

 appendage terminated by two silken hairs, between the hooks. 

 The elytra cover all the upper part of the abdomen. 



We shall divide them into two sections, Avhich correspond 

 to the genera Lucanus and Passaliis of Olivier. 



Antennae strongly bent ; smooth, or but little hairy ; a 

 labrum very small or confounded with the hood ; jaws termi- 

 nated in a membranaceous or coriaceous lobe, very silky, 

 pencil-formed, without teeth, or presenting but one at the 

 most ; a tongue, either entirely concealed or incorporated 

 with the chin, or divided into two lobes, narrow, elongated, 

 silky, and more or less projecting beyond the chin, mark the 

 first of these sections; the scutellum, moreover, is placed 

 between the elytra. 



This first section will form the genus 



Lucanus. 



We shall make a first division with those in which the knob 

 of the antennae is composed but of three or four articulations 

 or leaves. 



We shall commence it with insects almost entirely similar, 

 with the exception of the antennas, to the Oryctes, a sub-genus 

 of the preceding tribe. The mandibles are concealed, with- 

 out teeth, and similar in the two sexes. The chin is almost 

 triangular, and entirely conceals the tongue, as well as the 

 base of the jaws. The body is thick and convex above, al- 

 most cylindrical, and rounded posteriorly. The corslet is 



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