ON DECOMPOSED VEGETABLE MATTER. 53 



are principally confined to temperate climates, I may 

 observe that the tropical insects of this family principally 

 belong to the extreme genera, such as Athyreus, and 

 Hybosorus, the former of which approaches to the Sea- 

 rabaidce and the latter to the Dynastidec. 



Farm II. SCARAB^ID^. 



Antennae Q-vel 8-articulatce capite paulo longiores; 



Articulo primo elongate-, aliorum conjunctim longitu- 

 dine, cylindrico, ad apicem hasinque paulo cras- 

 siore; secundo brevi subconico vel snbgloboso. 

 Clavd magna triphylld. 

 Labrum clypeo occultatum, membranaceum, in medio ca- 



rinatum, antice ciliatum, 

 Mandibulae sub clypeo latitantes, basi cornea, deinde in 

 laminam products elongatam, lanceolatam, com- 

 pressam, membranaceam, latere interno et apice 

 jimbriatis. 

 Maxillae Crustacea, laciniis duabus instructs ; apicali 

 transversa, subrotundata, fungosa, membranacea, 

 jimbriata, lobo interno homogeneo, subtrigono, pari- 

 terque jimbriato, apice subacuto. 

 Palpi maxillares jiliformes, labialibus vix duplo longi- 

 ores ; 

 Articulo ultimo ad basin et apicem graciliore> 

 Palpi labiales maxime hirti, articulis subdilatatis ; 



Articulo tertio out terminali parvo, aliis abrupt^ 

 minore, in nonnullis obsoleto. 

 Labium membranaceum, mento occultatum, apice bifi- 

 dum, laciniis pone palpos et eorundem usque ad 



