MASON WASPS. 



Uicltoo-Fly—(Tachina /artiflnim/)— Natural silt. 



rather larger, which deposited an egg there ; and the 

 grub hatched from it, after devouring one of the wasp- 

 grubs, formed itself a cocoon (a), as did the other 



Mason-Wasp's Nest and Cocoons. — About one-thin! the natural sice. 



undevoured grub of the wasp (6). Both awaited 

 the return of summer to change into winged insects, 

 burst their cerements, and proceed as their parents 

 did. 



Mason-Wasp— (Odyncrusmurarius.)— Natural 



Another mason-wasp (Odynerusmurariwi, Latr.), 

 differing little in appearance from the former, may 

 often be seen frequenting sandy banks exposed to 

 the sun, and constructing its singular burrows. 



c 3 



