MONTANA EXPERIMENT STATION. 131 



the season and to keep him there until the close of the season/ we 

 did not have an opportunity to determine the number of broods of 

 the beetle nor the stage in which most of the insects pass the win- 

 ter. Mr. Jones made the observations on the effects of spraying 

 with, and dipping in, arsenate of lead, and very carefully studied the 

 habits of the insects during the three and a half months of his stay 

 at ^Missoula, 



GEOGRAPHICAL DISTRIBUTION. 



The strawben-y crown girdler is an introduced species, having 

 come to this continent in all probability from Europe. It is known 

 to occur in Em-ope and Siberia. In the' United States it has been 

 found from the Atlantic coast west to the state of Washington. 

 The most southerly points at which it has been recorded are Alle- 

 ghany, Pa., and Santa Fe, New Mexico. Both of these points are 

 just within the southern boundary of the transitional life-zone and 

 it is probable that this beetle finds its southern limit at about the 

 line between the transitional and upper austral life-zones. 



From the list of places given below, where the beetle has been 

 recorded, it will be seen that though of foreign origin, this insect has 

 become wideh- and generally distributed. Being entirely without 

 wings it is dependent upon outside agencies for transportation ex- 

 cept over such short distances as it can cover by walking. More 

 will be said about th / means of distribution in a later paragraph. 



The following is a list of the records of the <li:^tribution of the 

 strawberry cr(n\n -girdler. 



Massachusetts. 1852, Henshaw. Cambridge, ^Mass., 1865, Hen- 

 shaw. Cambridge. Mass., 1874. Henshaw. Wyoming, Mass.. 1874, 

 Henshaw. Alleghany, Pa., 1875. Wickham. Detroit. Mich., 1878^ 

 Wickham. Hanover, N. H., 1880, Henshaw. Buffalo, X. Y. 1882 (?) 

 Wickham. New York, 1884, Lintner. "Southern Michigan," ai)orit 

 1882 or 1883, AVeed. Ottawa, Canada. 1884. Harrington. Iowa City, 

 Iowa, "not later than 1886," Wickham. Nova Scotia, 1880. Chica- 

 go, 111., i889AA'ayne Co., Ohio, 1892. Quebec, Canada, 1892. Indiana, 

 ..892. New Jersey. Laramie, Wyoming, 1893, A\'ickham. Santa 

 Fe, New [Mexico. 1894, Wickham. Minnesota, 1895, Lugger. Mis- 

 soula, 1897, AAilcox. . Bozeman, Montana, 1899, Cooley. Helena, 

 Montana, 1904. Cooley. Lake Washington. Wash., 1904, Melander 

 (in Lit.) 



