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 . 

 Hyhosorus, the former of which approaches to the Sea- 

 rabacidce and the latter to the Di/nastidce. 



Fam.II. SCARAB^IDiE. 



Antennas 9- vel S-articulatce capite paulo longiores ; 



Articulo primo elongato, aliorum cofijunctim longitu- 

 dine, cylindrico, ad apicem hasinque paulo eras- 

 siore ; secimdo brevi subconico vel siibgloboso. 

 Clava magna triphylla. 



Labrum clypeo occultatum, membranaceiim, in medio ca- 

 rinatiim, antice ciliatum. 



Mandibulas sub clypeo latitantes, hasi cornea, deinde in 

 laminam products elongatam, lanceolatam, com- 

 pressam, membranaceam, latere interno et apicc 

 Jimbriatis. 



Maxillae Crustacea, laciniis diiabus instriictee ; apicali 

 transversa, subrotundatd, fungosa, membranaced, 

 Jimbriata, lobo interno liomogeneo, subtrigono, pari- 

 terque Jimbriato, apice subacuto. 



Palpi maxillares filiformes, labialibus vix duplo longi- 

 ores ; 

 Articulo idtimo ad basin et apicem gracilio'C- 

 Palpi labiales maxime hirti, articulis subdilatatis ; 



Articulo tertio aut terminali parvo, aliis abrupth 

 minore, in nonnullis obsoleto. 

 Labium membranaceum, mento occultatum, apice bifi- 

 dum, laciniis pone palpos et eorundem usque ad 



