Ill 



most common in April and Jnly. The broods overlap, however, so that 

 the beetles are to be found at most any season. The first brood is pro- 

 duced upon garden beans and the second u])on cow peas. The mature 

 insects eat holes in the leaves, which habit is especially noticed with 

 the first brood upon beans. 



Mecyna reversaUs has been very injurious this season to various 

 species of Lupines growing m the grass experiment beds. 



Arctia phyllira has this season proved a new and seriouspest to Cot- 

 ton in a limited area about eight miles from the Exi)eriment Station. 

 About the middle of June several acres of cotton were entirely stripped 

 by this insect. Should this species increase to any extent it may some 

 time prove a more serious pest to the cotton crop than either the Leaf 

 Worm or the Boll Worm. 



Mr. Bethune stated that the Horn Fly had this month been noticed 

 for the first time in the Province of Ontario, at Oshawa, Toronto, and 

 London, and was creating some alarm among stock-owners. 



Mr. Webster stated that last fall, at Columbus, Ohio, he had found 

 that 20 per cent of the flies taken from cattle were infested by a very 

 small mite belonging to the family Gamasidse. 



Mr. Smith said that the Horn Fly was now not more abundant in New 

 Jersey than the ordinary Cattle Fly {Stomoxys ealcitrans). 



Mr. Kellicott stated that his son had recently written him of the 

 abundance of the Horn Fly in central Michigan. 



Mr. Weed stated that dark-colored cattle were worse attacked than 

 those of other colors. Mr. Smith said the Jerseys suffered most, while 

 Mr. Webster said at Columbus, Ohio, last year, the red shorthorns were 

 the worst afflicted. Mr. Weed reported the pest in Louisiana and 

 Mr. Webster from western Indiana, it having first appeared in that 

 State in the summer of 1891, about Eichmond. 



Mr. P. H. Eolfs, of the Florida station, stated that this insect made 

 its appearance in his State about a year ago and had now spread nearly 

 to the central part of the peninsula of Florida, moving southward, and 

 in the opposite direction from which cattle were being shipped. They 

 appear in Ai^ril, and therefore their season of breeding is much more 

 protracted than farther north. 



The following paper was then read : 



NOTES ON INJURIOUS INSECTS OF 1892. 



By Herbert Osborn, Ames, Iowa. 



Up to the present time no prominent outbreak of insects has occurred 

 in Iowa, nor, so far as I know, in the western portion of the Mississippi 

 valley. Plant-lice have been noticeably few in number, especially as 

 compared with last year. Their ranks were much depleted by para- 



