278 INSECTS. COLEOPTERA. 



three joints of the antennae thickest ; thorax globular ; elytra 

 smooth. Inhabits Europe, at the roots of trees. Lat. Gen. i. 282. 



TRIBE IV. DERMESTINI. 



Antennae terminating abruptly in a club ; legs straight ; feet 

 short and not contractile ; mandibles short, thick, and arched; 

 body ovoid ; palpi short, filiform. 



Gen. DERMESTES, Lin. Lat. 



Antennae a little longer than the head, of eleven joints, the last 

 three forming an oval and perfoliated club ; no furrow for the 

 antennae in the thorax ; body oval, convex above ; head small 

 and inclined ; chin square ; jaws with a scaly tooth on the 

 internal side. 



The insects of this genus are of very small size, and their larvae have been long 

 known as very destructive in museums, larders, &c. 



D. lardarius, Lin. Black, with the base of the elytra cinereous, 

 and dotted with black ; the larva is elongated, tapering from the 

 head, of a chestnut-brown colour above, white below, with long 

 hairs, and two kind of scaly horns on each ring. Inhabits Europe. 

 Shaw, vi. pi. 7- 



Gen. ATTAGENUS, Lat. Dermestes, Lin. 

 Antennae with the club elongated, and the last joint very long 

 in the males ; maxillary palpi long and slender ; no corneous 

 tooth in the jaws ; pre-sternum covering the chin. 



A. pelltOj Lin. Black, with three white points on the thorax, and 

 one of the same colour on each elytrum formed by the down ; 

 male with the last joint of the antennae very long ; larva elon- 

 gated, reddish-brown, with red hairs, the body terminated by a 

 tail formed of hairs of the same colour. 2^ lines long. Inhabits 

 Europe. Shaw, vi. pi. 7- 



Gen. MEGATOMA, Lat. Dermestes, Lin. 

 Club of the antennae long, conical, or triangular, and terminated 

 by a joint larger than the preceding ; pre-sternum covering 

 part of the mouth ; body short and broad ; labium entire. 



M. serra, Lat. Shining pitchy black ; antennae and feet brownish- 

 yellow. Found near Paris. Lat. Gen. pi. 8, fig. 10. 

 The genus Trogoderma, (Trinades, Dej.) and Globicornis, have been separated 



from this group. 



M. undulata, Lat. Black ; sides of the thorax and elytra with two 

 villous undulated lines ; tarsi dull rufous. Inhabits Europe, on 

 trees Lat. Gen. ii. 34. 



TRIBE V. BYRRHI. 



Antennae filiform, or thickening towards the end ; legs broad ; 

 feet contractile ; pre-sternum dilated at its upper extremity. 



