258 EXPERIMENT STATION RECORD. [Vol.43 



Infested pods are not easy to detect, the only sure method of determining 

 the presence of the worm heiiis hy opening the pod. The infestation seems 

 to hasten maturity of the pods and sometimes causes them to blanch prema- 

 turely. Upon completing their growth, the larvfe leave the pods through small 

 holes and seek suitable winter quarters. The larva? began to emerge from the 

 pods July 31, reached their maximum August 13, and continued to emerge until 

 August 25. If the peas are still in the field, the larvre enter the soil a short 

 distance and construct their cocoons, thus making ready for the winter season. 

 It often happens, however, that the peas are harvested and placed in the mow 

 ready for thrashing before the pea moth larvpe are developed. In that case the 

 worms on emei'ging find wintering quarters among the old pea vines, or in 

 cracks, crevices, or other suitable places in the barn. 



While a single season's experiments have not led to a determination of the 

 best method of controlling this insect, they have led to the recommendation that 

 early maturing varieties be selected and that the planting of the crop be made 

 as early as possible in the spring. 



The trap light was found to be ineffective, and spraying is impractical. The 

 cultivation should be thorough, the peas thrashed within a day or two after 

 harvesting, and the straw remaining after thrashing burned. Any of the vines 

 that have escaped the mower and remain in the field should be raked together 

 and burned. A map is given showing the distribution of the pea moth in 

 Wisconsin and a diagram of its life history at Sturgeon Bay in 1919. 



New moths from Mexico, H. G. Dyar (Insecutor InsciticB Mcnstnius, 8 

 {1920), No. 1-3, pp. 30-35). 



Exterminating the mosquito, C. 0. Painter (Amer. City, 22 {1920), No. 3, 

 pp. 257-250, figs. 3).- — This is a brief report in which profitable results are 

 shown to have been obtained in extensive work in Nassau County, L. I. 



A second Culex of the subgenus Transculicia, H. G. Dyar {Insecutor In- 

 scitiw Menstmus, 8 {1920), No. 1-3, pp. 27-29). 



Note on the subgenus Neoculex of Culex, H. G. Dyar {Insecutor hiscitice 

 Menstruus, 8 {1920), No. 1-3, p. 36). 



The mosquitoes of British Columbia and Yukon Territory, Canada, H. G. 

 Dyar {Insecutor Inscitiw Menstruus, 8 {1920), No. 1-3, pp. 1-27, pi. 1). 



A new Brazilian species of Anastrepha, M. Bezzi {Bol. Lab. Zool. Gen. e 

 Agr. R. Scuola Super. Agr. Portici, 13 {1919), pp. 1-1 Jf, fig. 1). — Notes are pre- 

 sented on 10 species of fruit flies of tlie genus Anastrepha occurring in Brazil, 

 of which A. Mstrigata from tlie fruit of "Araxa " is described as new. 



Combating the blow fly, W. A. Russell and W. G. Brown {Sci. and Indus. 

 [Aust.], 1 {1919), No. 8, pp. 487-489, fig. i).— Attention is called to tlie fact that 

 the use of arsenical preparations has given the most successful results in com- 

 bating the blow fly of sheep. The arsenical is sprayed into the wool at the 

 breach of the sheep by use of a strong power pump as they pass tkrough a 

 race such as is used for branding. It is stated that 6,000 sheep a day have 

 been thus treated in an efficient manner. 



The sweet potato weevil (Cylas formicarius) , H. A. Reynolds {Amer. 

 Plant Pest Com. Bui. 3 (1919), pp. 2, fig. 1). — A brief account of the sweet potato 

 weevil, based in part upon Farmers' Bulletin 1020 (E. S. R., 40, p. 357), in 

 which the importance of control work is emphasized. 



The yam weevil (Paleopus dioscoreae Pierce) , G. B. Merrill {Quart. Bui. ^ 

 State Plant Bd. Fla., 4 {1920), No. 2, pp. 34, 35).— The author records the collec- 

 tion of this weevil in yams from Jamaica intercepted at Key West. 



Beekeeping for beginners, H. B. Parks {Texas Sta. Bui. 255 {1919), pp. 7- ^ 

 25, pis. 6). — This is a popular summary of information which replaces Bulletin 

 142, previously noted (E. S. R., 26, p. 456). 



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