INSECT-ARCHITECTURE. 





stores in each cell a mass of pollen, od which as 

 placed, for the food of the young grub. 

 Carpentei are well named, as with their strong ja 



Fig S3! Leaf -cutter bee and i 



they bore perfectly regular holes in pine boards, as straight 

 as if made with an auger. The tunnel is Bometimes made 

 from L2 to 18 inches in length, and aboul half an inch 

 in diameter, so as to readily admit the bee. The industri- 

 ous little carpenter, working as rapidly as Bhe can, <•• 

 her holes (in pine wood) at the rate of aboul a qn f an 



inch a day. Mr. Angus says: " If I mistake n 

 her aboul two days to make her own length at the first 

 start: but this being across the grain of the may not 



be so easily done as the remainder, which runs parallel with 

 it. She always follows the grain of the wd d, with tin 

 eeption of the entrance, which is about her own length." 



