Jan., '(X)] ENTOMOLOGICAL NEWS. 2J 



in the hard wood of trees, like cherry, peach and plum. After 

 drilling into the cane to the full length of the ovipositor, the 

 female widened the hole by swaying the ovipositor and ab- 

 domen from side to side and drilling out a cavity for the re- 

 ception of the egg. The preparation of this receptacle took 

 about eight minutes, but will, of course, vary with the hardness 

 of the cane in that particular place, and also seems to vary 

 with the temperature. On a cool evening it may take very 

 much longer, as I have observed in this species and also in 

 O. nivcus. 



When the cavity was finished, the ovipositor was taken out 

 almost entirely, and except for a swaying motion of the anten- 

 nae the insect sat perfectly still. The egg was being liberated. 

 In about a minute the ovipositor was again inserted to its 

 full length,, and by very apparent contractions of the abdomen, 

 the egg passed down through the ovipositor into the cavity. 

 The ovipositor was then partly lifted out, and after gently 

 crowding in the egg she began to cover it by drilling into 

 the sides of the hole above the egg and pushing the material 

 loosened down on the end of it and into the cavity above. This 

 took two or three minutes. Then the ovipositor was taken out, 

 and backing down to the opening, she commenced tearing 

 loose the epidermis that she could conveniently reach, and 

 mixing it with saliva, pushed the pieces into the opening. When 

 it was filled, she piled more above it, sticking it on with the 

 dark, salivary secretion. This took her four minutes, and 

 she then began to prepare a place for the next egg. 



The appearance of such oviposition work on the side of a 

 raspberry cane is shown enlarged in Fig. 2, which also shows 

 that the last hole drilled was left open, in fact did not receive 

 an egg. This was found true of a great, many series of punc- 

 tures and seems to indicate that the female after making the 

 cavity finds that she has already expended her supply of eggs. 



In Fig. 3 a raspberry cane is cut open and shows the ar- 

 rangement of the eggs inside. The eggs are golden yellow 

 in color with a white granulated cap. 



It will be of interest to economic entomologists to note that 



