ORDER COLEOPTERA. 481 



able from the foregoing by the knob of the antennae which 

 has five leaves in the males and four in the females. The 

 body is a more or less deep brown, sometimes reddish on the 

 upper side, with three grey lines of down on the corslet ; the 

 shield and under part of the body are furnished with a simi- 

 lar down, forming spots on the sides of the abdomen.* 



Hereafter the antennas knob has, in both sexes, only three 

 leaflets. 



Rhisotrogus, Lat. 



Perfectly like the last as to the general form of the bod}', 

 labrum, and tarsi ; but the antennae with nine or ten articu- 

 lations have only three leaflets to each knob.-|- 



Ceraspis, Lepel., Serv. 



Have, at the middle of the posterior edge of the corslet, two 

 small longitudinal incisions, and the space comprised forms 

 a tooth, the extremity of which is received in a corresponding 

 emargination of the scutellum. The antennse have ten ar- 

 ticulations. All the hooks of the tarsi, with the exception 

 of the anterior ones, are unequal ; the strongest of the inter- 

 mediate is entire in the male ; the others, and the six in the 

 female, are bifid. The body is either covered or sown here 

 and there with small scales. 



• Add M. hololeuca, Fisch. Entom. of Russia, II. 28. 3; M. Ankesteri, 

 ejusd. 4j M.pilosa, Fab. Fisch. ibid. 9; M. occidentalisy Fab., &c. See 

 SchcEnh. Synon. Insect. I. 162. 



■j- As it is not always easy to distinguish well the number of articula- 

 tions which immediately precede the knob of the antennae, I re-unite 

 the genus which I had named Arnphimallus, and in which these organs 

 have but nine articulations, to that of rhisotrogus. The M. Soktitialis, 

 23ini, serrata, fervida, atra, cequioxialis, rrificornis, &c. of Fabricius. The 

 third articulation seems to be decomposed. 



vol,. XI v. 2 1 



