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tenth of an inch deep which extends obliquely beneath the skin. 

 In this cavity the egg is placed and the beetle then proceeds to 

 pack the space about the egg with bits of husk which she tears 

 from the surface near where the opening was started. When 

 the egg is well sealed in she enlarges the place from which she 

 has torn the packing into a crescent-shaped incision, a little over 

 an eighth of an inch long, which partly surrounds the egg. 



As the beetle works she freely voids liquid excrement which 

 forms a dark stain on the surface of the nut about a fourth of 

 an inch from the wound. This stain on the nut is often more 

 conspicuous than the wound. 



Before the beetles have finished their egg-laying the walnuts 

 are nearly half grown and the husk is so solid that excavating, 

 as carried out so elaborately at first, becomes so difficult that the 

 beetle, evidently to avoid labor, changes the form of her punc- 

 ture and deposits the last of her eggs in shallow pits on the side 

 of the nut. These eggs are placed in groups of three or four and 

 have no crescent marks about them and are not protected with 

 the plug of chips. 



The egg is oblong-oval in shape, the color being creamy 

 white. The surface is finely granular and has a ground-glass 

 appearance. Length, .04 inch, width, .025 inch. Specimens that 

 were observed hatched in four, five and six days, the average 

 time being five days. 



The larvae are dirty white with brown heads and are less 

 robust and more active in their movements than those of the 

 weevils. After the larvae have fed for about ten days or two 

 weeks the nuts drop and the larvae complete their growth in from 

 one to two weeks thereafter. They then abandon their feeding 

 place, enter the ground for a short distance and soon pupate in 

 small cells which they fashion in the earth. The beetles issue 

 from the ground during August and September, and, presuma- 

 bly, spend the interval of warm weather about the trees. When 

 fall approaches they hibernate, and reappear the following 

 spring in time to attack the walnuts soon after the blossoms have 

 dropped from the trees. 



