ORDER COLEOPTERA. 407 



the corslet ; two transverse bands on the cases, and a spot 

 near their extremity grey. 



Globicoknis, Latr., 



In which the antennae terminated in a globular knob, lodge 

 in fossets prolonged, as far as close to the posterior angles of 

 the corslet.* 



The eighth tribe, that of Birhit, differs from the pre- 

 ceding by having the feet perfectly contractile, the legs 

 folding back upon the thighs, and the tarsi on the legs, so 

 that the animal appears, when these organs are contracted, 

 and applied on the under part of the body, to be absolutely 

 without feet, and inanimate. The legs are usually broad 

 and compressed. The body is short and gibbous. 



This tribe is principally composed of the genus 



Byrrhus, of Linnaeus. 



NosoDENDRON, Latr. 



Which are removed from the other Byrrhi, by having their 

 chin entirely uncovered, very large, and in the form of a 

 buckler. Their antennae are terminated abruptly in a short 

 knob, perfoliate, and with three articulations. 



They are found in the fissures of trees, particularly of the 

 elm. 



Byrrhus (Proper), Lin. Cistela, Geoff. 



Differ from nosodendron, by their chin of the ordinary size, 

 and enclosed, at least partially, by their presternum, the 

 anterior extremity of which is dilated. 



In some the antennae thicken insensibly, or terminate in an 

 elongated knob, formed of five or six articulations. 



* Megatoma rufUarsis, Lat. Gen. Crust, et Insect. II. p. 35 ; Dcrmesles 

 riifilarsU, Panz. Faun. Insect. Germ. xxxv. 6, 



