course, to materially affect the thistles, and, it must be confessed, 

 also turned their attention to garden plants, hollyhock, calendula, 

 etc. 



Mention has been made above of a troublesome gall-producing 

 mite on the leaves of plum. We have to report, also, in this con- 

 nection, Cecidomyid gall makers again injuring leaves of Soft 

 Maples, Box Elder, and the cockscomb gall locally abundant on 

 leaves of White Elm. In one county we secured specimens of the 

 peculiar globe-like galls on Red Elms, caused by the gall-making 

 plant louse, known as Pemphigus ulmi-fusiis. The Plum Curculio 

 has made its presence felt on apples as well as plums, and the 

 New York Weevil, Ithvccrus noveboracensis, working on fruit trees, 



Fig. 2. Peinfiliisus iilmi-fiisn.'! on Red Elm. 



has been complained of in some counties. A lepidopteran borer, 

 Podoscsia syringce, has attacked young ash trees near Adelaide, so 

 weakening their trunks as to cause them to be broken down by 

 the wind. A green saw-fly larva has worked on the leaves of ash 

 trees, and is at present in our breeding cages awaiting its trans- 

 formations, that we may identify it. 



From one to several inquiries regarding injurious insects have 

 been received from each of the following counties: Becker, Mc- 

 Leod, Morrison, Itasca, Yellow Medicine, Kandiyohi, Ramsey, 

 Brown, Rock, Hennepin, Polk, Lac qui Parle, Stearns, Otter Tail, 

 Wright, Scott, Clay, Nobles, Lake, Norman, Rice, Marshall, Da- 

 kota, Freeborn, St. Louis, Waseca, Todd, Isanti, Watonwan, Cass, 

 Nicollet, Big Stone, Dodge, Douglass, Renville, Cottonwood, Crow 



