74 ENTOMOLOGICAL NEWS. [Feb., '18 



insects, fungi and rodents in that State. Mr. E. N. Cory, of the 

 Maryland Experiment Station, proposes the installation of a large 

 rotary dryer at each army cantonment for the drying of horse manure 

 and the distribution of the dried article "through the help of the 

 National Fertilizer Association at a cost plus percentage basis, thus 

 relieving the soldiers and civilians of the menace of flies and provid- 

 ing for the farmer a source of fertilizer in the time of scarcity. More- 

 over, the number of cars required to handle this material will be 

 greatly reduced from the number required under the old plan to handle 

 daily the fresh manure produced at each camp." 



Changes of Address. 



C. W. Howard, Associate Professor of Entomology, University of 

 Minnesota, will remove to Canton, China. Address: care of Canton 

 Christian College, Hongkong, China. 



H. H. Knight, formerly of Ithaca, New York, and F. R. Cole, of 

 Hood River, Oregon, have entered military service. 



I. S. Wade, Wellington, Kansas, to U. S. Bureau of Entomology, 

 Washington, D. C. 



Dr. J. Chester Bradley, of Cornell University, has accepted an assist- 

 ant professorship of entomology at the University of California for 



1918. 



A New House Spider (Aran.). 



One day in October, 1914, I was in a restaurant in Boston when 

 a spider walked over the table and was caught. It looked different 

 from any native species and I put it aside for further examination. 

 In December, 1915, I stopped for a meal in the railroad restaurant 

 at Cleveland, Ohio, and there a spider came onto the table and was 

 caught. It turned out to be the other sex of the species found in 

 Boston. In May, 1917, a friend who has a tannery in Danvers, Massa- 

 chusetts, sent me another of the same species out of a bale of hides 

 from Africa. I then consulted Mr. Banks and he was at once re- 

 minded of Thatiafus coloradcnsls Keyserling and brought out a bottle 

 of this species from Claremont, California, which on comparison 

 proved to be the same as the eastern spiders. So it appears that we 

 have here a western spider that takes readily to life about houses and 

 isspreading across the country. J. H. EMERTON, Boston, Mass. 



Interrelations of Different Species of Insects (Horn., Col., Hym.). 



All things considered, the progress of Icerya control at New Orleans 

 during the summer and fall [of 1917] has not been entirely satisfactory. 

 Apparently several agents have retarded the successful propagation of 

 the Vcdalia. Chief among them must be mentioned the Argentine ant. 

 This ant undoubtedly aids in a very material increase of the Icerya. 

 In the fall of the year they reach their maximum numbers and these 

 hordes so effectively patrol and guard the scale infestations that the 



