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NEW JERSEY AGEICULTUEAL COLLEGE 



convex forms, each with a small hole in the upper surface, were also 

 noted, and were scales of the previous season from which parasites 

 had emerged. 



Febrnary ITth, more infested twigs from Xewark were examined, 

 with praetienlly the same result, except that these were more thickly 



Fig. 38. 



A wintering scale, taken February 1st. Seen from below to the left— from above 

 on the right ; much enlarged. Original. 



infested. Twigs received from j\[ontclair, !Mareh 1st and 15th, showed 

 considerable dill'eronce in the amount of infestation, some bearing a 

 large number of insects, others very few, while on some twigs torn, 

 cottony masses or a small number of old parasited scales were apparent. 



During the latter part of March and early April parasites emerged 

 in the laboratory from cocoons found February 3d, and these were 

 determined by Dr. William H. Ashmead as Eunotus lividus Ashm. — ■ 

 a small, dark blue, parasitic wasp, measuring about one-sixteenth of 

 an inch in length. 



April 11th, some seventy-five infested twigs were received from 

 Montclair, collected at three points, where the infestation had been 

 bad the previous year, but in general their condition was the same. 

 Several of the twigs had no scales, others only a few, while upon some 

 there were a number of insects. About two-thirds of the scales were 

 apparently alive and slightly larger than those examined earlier in the 

 season. In a few places there were remains of old cottony masses, 

 with some old parasitic cocoons and a few good ones, and a number 

 of old parasitized scales were also noted. At this time the insects 



