AN APPLE ATTACK. 23 



The young lice were hatching from the eggs at the time that the speci- 

 mens were sent. 



An unrecognized Apple Attack. 

 Under date of January 25, 1884, Secretary Harison informed me that he 

 had been addressed by Mr. H. C.Watson, of Port Kent, N. Y., in rehi- 

 tion to a great loss of apples in his vicinity recently. Mr. Watson had 

 written as follows: 



The apples affected, I think, exhibit no orifice, but appear on the sur- 

 face round and fair. When cut across longitudinally, a circle of dark 

 spots is revealed similar in position to those that children sometimes call 

 " the ten commandments." Immediately upon exposure to the atmos- 

 phere a serum exudes from these spots, and generally a white worm or 

 maggot soon appears in the serum. 



Mr. Watson also stated to Mr. Harison that while almost all gardens 

 in his village had the fruit affected in the manner above stated, yet 

 some orchards had wholly escaped. 



Under date of February 8th, Mr. Watson sent to me three of the 

 apples showing the attack. Two of them had been cut transversely sev- 

 eral days previously to ali appearance, as the cut surfaces had partially 

 dried, and showed the commencement of decomposition in the more 

 moist portions. The " ten commandments " could be made out, but 

 were not a conspicuous feature, and seemed to have no connection with 

 the attack. Some small grains of larval excrement were scattered 

 over t'he surface, but no larvse were visible. A number of spots, small 

 and blackish, could be seen. 



Upon the fourteenth of February the cut apples were again exam- 

 ined, when, upon the surface of one, two larvse of two species were dis- 

 covered. The one, a white, slender larva, about one-tenth of an inch 

 long, with its anterior end extended into an extensile point, evidently 

 one of the Diptera, and perhaps of the genus Ampelophila. The egg 

 from which it proceeded may have been deposited upon the fruit after 

 the commencement of its decay. 



The other larva was about one-twentieth of an inch long, with a large, 

 flattened head, with strong jaws and conspicuous antennae, with six 

 legs as long as the width of the body, the body with a few short hairs, 

 two longitudinal yellowish subdorsal stripes upon its posterior segments, 

 and the last segment terminating in two short pointed processes. It evi- 

 dently belonged to the Coleoptera. No explanation presents itself for 

 its presence in the apple at this time. 



Upon cutting the third apple, a number of spots of different sizes, 

 from one-tenth of an inch downward, were observed, most of which 

 were near the exterior. These spots contained yellowish, soft matter, 



