354 THE CANADIAN ENTOMOLOGIST. 



Wisconsin, but at that date had not penetrated farther west than the dis- 

 tricts bordering upon Lake Michigan. It reached northern Illinois about 

 1852, and then spread gradually westward and southward, reaching the 

 Mississippi River in the early '6o's. In 1868 it had invaded Iowa and 

 Northern Missouri; in 1872 it had extended south from Missouri into 

 Mississippi and had made sporadic appearances in Georgia, towards which 

 point it had, in the meantime, been spreading down the Atlantic coast. 

 In 1872 it had also made its appearance in Eastern Kansas, and since 

 that date it has appeared in Washington, Oregon and British Columbia, 

 south to some extent in California, and in several of the fruit-growing 

 regions of Colorado and Nebraska. At the present time it is seen in 

 Nebraska, and is not known, so far as our information goes, in Louisiana 

 and New Mexico. 



Can Canadian entomologists trace its spread through the Dominion ? 



The Scurfy Bark louse {Chionaspis furfurus, Fitch). — Unlike the 

 preceding species, the scurfy bark-louse is a native of America. It occurs 

 from Maine to Nebraska, through all the northern States, and south nearly 

 to the Gulf of Mexico. Recently it has been imported into England on 

 currant bushes from America. It is a hardy species, but coming into 

 more or less direct competition with the oyster-shell bark-louse, it has, in 

 many localities, been supplanted by the latter. Does this insect occur 

 abundantly in Canada, and what is its Canadian distribution? 



The Greedy Scale {Aspidiotus camellict, Sign.). — From our present 

 information, it seems probable that this insect is indigenous to Southern 

 Europe. It is known also in New Zealand, Australia and the Sandwich 

 Islands, into which countries it was probably imported directly or indirectly 

 from South Europe. In the United States it was first found in California, 

 where it was probably introduced from Australia, and where it was first 

 known in the vicinity of Santa Barbara, from which point it has spread 

 north to Washington, and south to Mexico. From California it has been 

 introduced into New Mexico. It is also found occasionally on hot-house 

 plants in the north-eastern States, and rarely out of doors in Florida. In 

 the latter State it has been found upon one food-plant only, and it is 

 impossible to surmise whether this is the result of a direct importation 

 from California or from Europe. 



The so-called English Walnut Scale {Aspidiotus Juglans-regicB, Com- 

 stock). — For all we know to the contrary, this species is indigenous to the 

 United Stales. It occurs in California, New Mexico, Florida. Texas, 



