262 



in the spring will probably prove to be an efficient remedy. The gall 

 of this species resembles that of E. vitis, but the lower surfaces are 

 not as abundantly felted, and the felt is white instead of brown. The 

 galled areas are more distinctly outlined with this mite and the small 

 cross-veins form distinct cross ridges between the larger veins. 



E. avellanae has not previously been reported from Oregon, and 

 on account of the manner in which it works and the time when migration 

 takes place, it is likely to prove a very serious pest of cultivated filberts 

 in this state. The galls may be found at all tnnes of the year, bvit are 

 less in evidence during the later part of the summer, since the mites 

 are said to emigrate from the old buds to the new during the middle 

 of the summer. By causing the gall formation, the growth of the buds 

 attacked is destroyed and the leaves and catkins do not unfold. No 

 efforts have been made to" determine a remedy, but on account of the 

 mites being protected by the bud scales, winter treatment is not likely 

 to prove effective. 



An example of the injury by each of the four mites is figured. 



Wilson (H. F.). Insect Pests of Stored Products; pp. 127-130. 1 fig. 



The greater part of this paper is devoted to a short study of the life- 

 history, control, etc., of Plodia interpundella, Hiibn., the Indian meal 

 moth ; a description of Silvanus surinamensis, L., the saw-toothed 

 grain-beetle, is also given, and these two are said to be the most 

 important pests of stored vegetables, dried fruits, grains, cereals and 

 nuts in Oregon. The following list of other pests of stored products 

 in Oregon concludes the paper : — 



Cathartus gemellatus, Duv., (square-necked grain-beetle), Calandra 

 granaria, L., (granary weevil), C. oryzae, L., (rice weevil), Bruchus 

 {Laria) j^isorum, L., (pea weevil), Acanthoscelides obtectus, Say, (bean 

 weevil), Lasioderma serricorne, F., (cigarette beetle), Sitotroga 

 cereallella, Oliv., (Angumois grain moth), Tyroglyplins lintneri, Osb., 

 (cheese mite), T. farinae, De U. (flour mite), and a mite found work- 

 ing in refuse grain and flour, which, according to Ewing, is a new 

 species. 



Wilson (H. F.). The Thistle Butterfly, Vanessa cardui, L. ; pp. 131-132, 

 Ifig. 

 During the season of 1914, this insect was exceedingly abundant 

 throughout Oregon, working on the Russian thistle. Many inquiries 

 have been made by farmers with the hope that an efficient means of 

 eradicating the thistles might result from the work of the caterpillar, 

 but it is not thought that the larvae are ever likely to become 

 sufficiently plentiful to be of much value in this respect, and any efforts 

 that are being made to keep down the thistles, should not be dis- 

 continued. There are probably two broods in Oregon, the first occurring 

 during June, July, and early August, and the second during August 

 and September. 



Wilson (H. F.). Grasshoppers in Oregon ; pp. 133-136, 2 figs. 



During 1913 and 1914, several species of grasshoppers have been 

 extremely injurious in Oregon, and owing to the more favourable 

 conditions that prevailed, have caused large losses in the southern, 



