June, '21] WEBSTER: CLOVER MITE 291 



December 12 of the same year some apple twigs and bark of apple 

 trees were received from Prof. E. J. Wickson, of San Francisco, Cal., 

 upon which were numbers of round red eggs similar to those that had 

 been found in Washington. These eggs the following January de- 

 veloped mites of this species. On March 29, 1880, a piece of bark 

 from an almond tree covered with red eggs, collected by Prof. H. 

 B. Norton, State Normal School, Santa Clara County, Cal., was 

 received through Professor Wickson, and on April 1 these eggs devel- 

 oped the young of this mite. On July 26, 1880, twigs and leaves of 

 apple carrying the eggs and newly hatched young- were received 

 from Prof. J. H. Comstock, who had obtained them from Salt Lake 

 City, Utah. A few developed individuals were also found upon these 

 leaves and twigs. In October of this same year Professor Comstock 

 brought them also from California. 



January 12, 1881, branches of almond were received from Mr. G. 

 W. Barnes, San Diego, Cal,. upon which were many eggs which 

 afterward developed this mite. 



March 2, 1882, twigs of plum were received from Mr. C. H. Dwinell, 

 Berkeley, Cal., which were red with the eggs of this mite. Most of 

 the eggs were empty, showing that many had already hatched. 



October 13, 1883, a full-grown female was found by Mr. Pergande 

 under bark of elm, in Washington, D. C, under conditions that 

 seemed to indicate that she was depositing eggs under the bark. She 

 w^as still ovipositing ten days later, and the eggs hatched April 19 

 of the following year. 



January 28, 1884, a microscopic slide containing these mites, taken 

 from bees, was received from Prof. A. J. Cook, Lansing, Mich. Feb- 

 ruary 8 of the same year specimens were received through the Smith- 

 sonian Institution from Mr. W. H. Curtis, Haverhill, Mass. In this 

 case the mites were said to have appeared by thousands in May and 

 again in November, remaining each time for four or five weeks. They 

 were first observed on the bricks outside a residence, but afterwards 

 made their way into the house. 



May 28, 1884, the mite was reported with specimens by Mr. George 

 N. Kimball, Waltham, Mass., as found in large numbers in the sitting 

 room of his house. December 9, 1885, eggs of this mite were received 

 from Mr. Albert Koebele on twigs of cherry from Alameda, Cal. 



January 12, 1888, a complaint was received from Mr. A. H. Mundt, 

 Fairbury, 111., that these mites were infesting houses. They were sup- 

 posed to have come from willow trees growing in close proximity to 

 the windows of the house. 



May 26, 1888, the writer observed these mites literally swarming 

 in some of the residences of Lafayette, Ind. Adults and young were 

 observed infesting grasses on lawns in Lafayette on September 26. 



