856 EXPERIMENT STATION EECOED. tVol. 35 



pointed out that the activities of this insect during the autumn when feeding 

 upon turnips and sprouted cabbage have been largely overlool^ed. The author's 

 studies show that tlie presence both in the spring and fall of large acreiiges of 

 succulent cruciferous roots is a condition necessary for the cabbage maggot to 

 occur in great numbers. 



The principal enemies are staphylinids of the genus Aleochara, the cynipid 

 parasite Psendoeucoila gillettei, and a mite of the genus Trombidium. 



Control measures include screening for the protection of seed beds, tar-paper 

 disks for the protection of early cabbage, the removal of all crop remnants 

 when the cruciferous crops are harvested, and the destruction of cruciferous 

 weeds. 



The cabbage maggot and its work, F, H. Hall {New York State Sta. Bui. 

 419, popular ed. (1916), pp. 3-S, pis. 2). — A popular edition of the above. 



Studies in flies. — II, Contributions to the study of specific differences in 

 the genus Musca, P, R. Awati {Indian Jour. Med. Research, 3 {1916), No. 3, 

 pp. 510-520, pis. 19, figs. 6).— In this second paper (E. S. R., 35, p. 660), the 

 author presents a comparative study of the genitalia in different forms of 

 calyptrate flies and his conclusions relative to the homologies of the parts in 

 this group. 



The life history of Bdellolarynx sanguinolentus, J. L. Mittek {Indian Jour. 

 Med. Research, 3 {1916), No. 3, pp. 538-540) .—The breeding habits of this fly, 

 here reported, resemble in general those of HcematoMa sanguisugens previously 

 noted (E. S. R., 35 p. 760). 



Destruction of the tobacco beetle (Lasioderma serricorne), D. B. Mackie 

 (Trop. Agr. [Ceylon], 46 {1916), No. 3, pp. 110, i7i).— This briefly reports tests 

 and calls attention to the advantages of the vacuum method of fumigation. 



New species of the family Ipidse, J. M. Swaine {Canad. Ent., 47 (1915), No. 

 11, pp. 855-369, pis. 2; 48 {1916), No. 6, pp. 181-192, pi. J).— The host plants 

 recorded of several of the forms here described as new are as follows : Ips perroti 

 from Pinus resinosa on Perrot Island, Quebec; Dryoccetes pseudotsugw from 

 Douglas fir at Stanley Park, Vancouver ; Phloeosinus pini from Pinus divaricata 

 in the Riding Mountains, Manitoba ; P. hoppingi from cedar limbs in California ; 

 P. vandykei from cedar limbs at Huckleberry Meadow, Cal. ; Hylastes ruber 

 from bark of dying Douglas fir in British Columbia; Pityokteines elegans 

 from Pinus monticola in Oregon and California; Orthotomicus lasiocarpi from 

 Abies lasiocarpa and Larix americana in British Columbia and Alberta, re- 

 spectively ; 0. ornatus from Arizona and Oregon and from Pinus ponderosa and 

 P. jeffreyi in California ; I. chagnoni from Picea canadensis and Pinus strobus 

 from Ontario and Quebec Provinces; and /. vancouveri from P. monticola on 

 Vancouver Island and in British Columbia. 



Apicultural notes, P. Nelson {Guam Sta. Rpt. 1915, pp. 41-43).— The year 

 under report is said to have been a very satisfactory one for the beekeeper. A 

 record of production by nineteen colonies located at Yigo showed that 1.680 lbs. 

 of surplus honey were extracted from January to May, or an average 88 lbs. per 

 colony. A colony placed at Santa Rosa in December by dividing increased to 

 four fairly strong colonies by May and produced 224 lbs. of surplus honey, aver- 

 aging 56 lbs. of honey in addition to the increase of three colonies. The single 

 colony of honeybees introduced from Hawaii in 1907 has thrived so well that 

 there are now thousands of colonies of wild bees in hollow trees throughout the 

 forests, the progeny of this single queen. 



A method of removing honey and bees from hollow trees without cutting the 

 tree, which has been practiced by the author with much success, is described. 

 During the previous year he removed nine colonies from trees within a radius of 

 half a mile by this method, one of which produced over 250 lbs. of honey. 



