ORDER ' OLEOPTERA. 



L13 



larval 



Family Platypsyllidn' Bodj flat, like a cockroa 

 mandibles wanting. PUitypeyUa eastorw Kitscma is, both in h- I 



and adull bU pai asite of the 1" -.w i 



I niily Hydrophilidae. — liody oblong, oval, COl >heri- 



&& 



S^T^H 



$?T& 



mas 



V\c ISM Bydrophllus; Its* I larva. Natural • 



cal; palpi often very 1 < • 1 1 lt : mostly aquatic; larvae carnivorous, llu- 

 drophUus triangulceris Say; Sphceridium scara Linn.). 





Adephaga. 



This group has been already briefly defined on p. 

 The water and ground beetles are 

 usually carnivorous both in the 

 larval and adult stages, though 

 many are phytophagous. 



Family Gyrinidae Body oval; an- 

 tennae irregular, very short; eyes <li- 

 vided »> thai they appear as four. The 

 whirligig beetles are seen in groups 

 gyrating and circling on the surface of 

 ponds and streams, and when caught 

 out a disagreeable milky fluid. 

 Gyrinus borealis A.ube 



Familj Dytisciaae.— Like Carabids, ex- ,.-,,_ 

 cept in those characters which adapt and larva 





' 





