48 



SpecimeDS of this mite were received from our Indiana agent, Mr. F. 

 M. Webster, May 7, 1886, who reported them to be abundant on Red 

 Clover; and in June of that year Mr. Webster found them in numbers 

 on grass (Timothy ?), which they were seriously injuring. May 28, 1888, 

 he reported them to be disagreeably abundant in houses, where they 

 occurred in myriads, and in the spring of the year following they were 

 similarly numerous. A description of these outbreaks is given by Mr. 

 Webster in Insect Life, Vol. I, pp. 277-279. 



Accounts of similar occurrences, together with specimens, have been 

 received from A. H. Mundt, Fairbury, 111. ; Mrs. H. S. Perry, Elgin, 

 111.; L. H. Ellis, Wellington, Ohio (see letter with reply in Insect Life, 

 Vol. II, pp. 278-279) ; C. C. Stoltz, Greenville, Ohio; E. M. Mackemer, 

 Creston, Iowa; and others. 



Of the many accounts with specimens received from Western States, 

 in no case have the mites been reported to enter dwellings, but have 

 always been found on fruit and other trees. 



December 12, 1879, apple-twigs bearing the eggs of this mite were 

 received from Mr. Wickson, editor of the Pacific Rural Press, San Fran- 

 cisco, Gal., and the larval mites issued early the following year, begin- 

 ning to appear January 26. 



March 29, 1880, additional specimens of eggs, this time on the bark of 

 the Almond, were received from Mr. Wickson. The specimens were 

 collected in Santa Glara Gounty, Cal., by Prof. H. B. Norton, who re- 

 ported that they were quite abundant in that locality. These eggs 

 were hatching when received, and the young continued to appear dur- 

 ing April.* 



Additional specimens of eggs and young on the Almond have been 

 received from G. W. Barnes, San Diego, Gal., our agent, Albert Koebele, 

 Alameda, Gal., and on the Plum, from 0. H. Dwinwelle, Berkeley, Gal., 

 and Prune, from J. H. Casterline, Santa Rosa, Cal. The latter sending, 

 in addition to eggs and young, included one adult mite. The adults 

 were also obtained by Professor Comstock in California in October of 

 1880. 



A very interesting lot of eggs was received August 14, 1889, from H. 

 W. Turner, Valley Springs, Cal., who forwarded us a piece of the bark 

 of Cottonwood absolutely covered, and several layers deep, with what 

 are evidently the eggs of this mite. Mr. Turner writes of these eggs as 

 follows: 



Eggs on Cottonwood, Tuolumne County, Cal.. 8,000 feet elevation ; collected July 

 21, 1889. These eggs are mostly deposited on the south side of the trunks of the Cot- 

 tonwood (the one common at from 6,000 to 8,000 feet everywhere in Sierra Nevada, 

 with rounded leaves), near the base. At least 50 square feet of these eggs were seen, 

 and from the specimens sent you, you can easily approximate their numbers. 



"Numbers of the young mites were placed on an orange tree infested with Aspidi- 

 otus gloveri and Mealy-bugs, but none were observed to attack the scale insects which 

 it was at tirst thought they might do since they were found on trees infested with 

 scales of various kinds. 



