ENTOMOLOGY. 161 



of 2i to 3 lbs. to 50 gal. of water, before the buds burst but while they are 

 swelling or just as the tips begin to show green, and again before the flower 

 buds open. These applications will also catch the bud-moth larviB, which are 

 serious pests." 



The report concludes with brief notes on 2 closely allied species, namely, the 

 oblique-banded leaf-roller (Archips rosacea-na), and the ugly-nest leaf -roller 

 (A. cerasirorana). A partial bibliography consisting of 41 titles is api^euded. 



The alfalfa gall midge (Asphondylia miki), F. M. Webster ( U. S. Dept. 

 Agr., Bur. Ent. Circ. i//7, pp. J/, figs. 6'^. — This circular has been prepared in 

 order to direct the attention, especially of alfalfa growers in the southwestern 

 portion of the country, to the apijearance of this foreign insect in the United 

 States. It can not be predicted at the present time what injury this insect will 

 cause in the United States, though it has not so far proved destructive. 



Galls, from which this insect was afterward reared, were first found in 

 limited numbers at Sacaton, Ariz., in June, liX)9. They were found about 

 Tempe and Phoenix, Ariz., in Jime, 1911, and at Tularosa, N. Mex., in July of 

 the same year. A translation is given of the original descriptions of the gall 

 as found in alfalfa fields in the vicinity of Vienna, Austria. 



While but little definite information has been gainetl in relation to the pest, 

 it apparently winters in the pods. So far as now known its breeding season 

 during summer is rather short, as it has not been noticed earlier than late 

 May or later than September. The source of its entrance into this country 

 remains obscure, but the author suggests that it may be working its way 

 from Mexico northward. That it is preyed upon extensively by parasitic insects, 

 although the parasites are all new to science and have never been described, is 

 thought to imply a rather long residence in this country. " The indications 

 are that it is spreading over the alfalfa-growing sections of the extreme South- 

 west, but it does not necessarily follow from this that it will prove so destruc- 

 tive as have many other insects coming to us from across the Atlantic 

 Ocean. . . . 



" Mowing the alfalfa just as the plants are coming into bloom will doubtless 

 keep the numbers of the midge much reduced, as this method tends to prevent 

 development, and, therefore, to curtail increase in numbers." 



Papers on insects affecting vegetables, — Arsenite of zinc and lead chro- 

 mate as remedies against the Colorado potato beetle, F. A, Johnston ( U. 8. 

 Dept. Agr., Bur. Ent. Bui. 109, pt. 5, pp. 53-56). — This is a report of a series 

 of experiments conducted in cooperation with the Virginia Truck Experiment 

 Station in which the insecticidal value of arsenite of zinc and of lead chromate 

 was compared with that of other arsenicals. 



" The results obtained from the use of lead chromate were very unsatisfac- 

 tory as comparetl with those in the case of other insecticides used. The lead 

 chromate employed was in the form of a powder, and great difliculty was experi- 

 enced in making it mix well with water, it having a tendency to settle quite 

 rapidly, requiring constant agitation to keep it in solution. It adhered well 

 to the foliage, and its color stood out quite prominently in contrast to the other 

 plats. However, the young larvae seemed to be able to feed on plants that were 

 thoroughly covered with the material without receiving much injury. 



" The arsenite of zinc employed was also in the powdered form. It is much 

 lighter than lead chromate and remains in suspension in water much better. 

 It adheres to the foliage very well and does not, so far as could be observed, 

 burn or injure the plants in any way." In experiments with arsenite of zinc at 

 the rate of 1, li, and 2 lbs., respectively, to 50 gal. of water, by far the best 

 results were obtained where 2 lbs. of the arsenite was used. " Without doubt 



