474 CLASS INSECTA. 



Chasmodia, Macleay. 

 Similar to Macraspis in the general form of the body, the 

 proportions of the shield, and the sternal point, but with the 

 mandibles narrower, and the extremity obtuse and entire. 

 The jaws have but two teeth, with a pencil of lashes, the 

 mentum is an elongated ovoid, obviously narrowed toward its 

 upper end, with the edge furnished with lashes. All the 

 hooics are moreover entire. (See the article Rutela in the 

 Encyclop. Method, and Mr. Macleay's work.) 



In these an axillary piece (the same as is seen in the same 

 place in Cetomia, or that which M, Audouin names epimere,) 

 fills the space included between the posterior angles of the 

 corslet, and the exterior of the base of the elytra. 



Ometis, Latr.* 



The genus Melolontha, of Fab., will compose our fourth 

 and fifth sections 



The fourth, that of Phyllophagi, is formed of scarabaei, 

 nearly allied to those of the last sub-genera, but the mandi- 

 bles are covered above by the hood, and hidden under- 

 neath b}' the jaws ; their exterior side only is uncovered, but 

 nevertheless without extending beyond ; they shew nothing 

 exteriorly of the sinus or indentations which are observable 

 there in Rutela and other analagous sub-genera. The ante- 

 rior edge of the labrum is composed, and sometimes repre- 

 sents the figure of a reversed and broad triangle, but more 

 generally that of a transverse leaf emarginated in the middle. 

 The number of the articulations of the antennae is not constant, 

 and varies from eight to ten ; it is the same with those of the 



* Rutela cetonioides, Ency. Method.; Rutela cerata, Germ.; Anisoplia 

 hiitrio, Dej , but the antennae with nine articulations. This sub-genus 

 seems to connect these and the preceding insects with cetonia. 



