June, '12] WEBSTER: CLOVER MITE 295 



chamber were received from Mr. G. H. Buffum, Denver, Colo. 

 August 11, 1900, eggshells of this mite were received from Mr. C. B. 

 Simpson, Weiser, Idaho, on a twig of pear. Under date of May 18, 

 1901, Prof. Fabian Garcia, Mesilla Park, N. M., sent twigs of apple, 

 the leaves of which were blighted bj' this mite. June 7, 1901, speci- 

 mens were received from Mr. Thomas J. Morrell, Ogunquit, Me., 

 with the complaint that they were very destructive to plants and 

 vines in that neighborhood. Under date of October 25, 1907, Mr. 

 M. J. Ellis, of Wausau, Wis., forwarded a complaint to the Bureau 

 that this mite attacked people while in l)ed — the only instance on 

 record of this character. The house appeared to have been swarm- 

 ing with the mite. This occurrence was in April, 1906. 



Mr. C. N. Ainslie, of the Bureau of Entomology, found swarms of 

 these mites in Washington on the grounds of the United States 

 Department of Agriculture and about the Washington Monument 

 April 22, 1908. Mr. James A. Hyslop, also of this Bureau, found 

 the mites excessively abundant on volunteer oats at Grant Road 

 near Washington, D. C., April 17, 1909. The infested leaves were 

 thickly dotted with white spots, which he attributed to the work of 

 this mite. Mr. T. H. Parks, of this Bureau, found the mites exces- 

 sively abundant in the alfalfa fields about Wellington, Kan., during 

 April, 1910. He counted as many as fifteen mites on the top of one 

 alfalfa leaf. Mr. E. 0. G. Kelly, also of this Bureau, April 17, 1911, 

 found that these mites caused slight injury to the leaves of alfalfa. 

 The writer has known them to take possession of a newly erected 

 farmhouse in Ohio during autumn. 



These mites were also observed attacking blue grass at Nashville, 

 Tenn., December 28, 1911, by Mr. G. G. Ainslie of the Bureau of 

 Entomolog}'. 



Eriococcus borealis in Colorado. In Journ. Ecox. Ent., Oct., 1910, p. 428, I 

 recorded an undetermined Eriococcus, represented only bj' males, from Tolland, 

 'Colorado. Mr. E. Bethel has now sent me good females, which he collected at 

 Tolland, October 7, 1911, on Betula glandulosa. The species proves to be Eriococcus 

 borealis Cldl., as was expected. The following measurements, in microns, are from 

 the Tolland specimens; Antenna; 7-jointed, joints (1.) 18, (2.) 40-45, (3) 53-55, 

 (4) 53-60, (5) 20-28, (6) 18-23, (7) 33-40; hair at end of last joint 45; larger dermal 

 spines 48; setaj of caudal lobes 125; labium 130 long and about 100 wide at base; 

 hind leg with femur + trochanter 200 long, tibia 125, tarsus 130, width of femur 63. 



On Aug. 23, 1911, I collected Erium lichtensioides CklL, on Artemisia tridentata 

 near Tolland at an altitude of about 9000 ft.; very high both for the coccid and 

 the plant. — T. D. A. Cockerell, Boulder, Colorado. 



