1918] ECONOMIC ZOOLOGY — ENTOMOLOGY. 46? 



tral zones. Wild currants and gooseberries appear to be the native host plants 

 of the species, which is so serious a pest in Maine that frequently the crop of 

 currants and gooseberries is a total loss. The author found the life stages 

 under field and laboratory conditions to vary in 1914 and 1915 as follows : The 

 egg period from 4 to 8 days, larval period from 10 to 25 days, pupal period from 

 10 to 11 months, mating period from 29 to 38 days, preoviposition period from 6 

 to 16 days, egg-laying period from 34 to 36 days, and longevity of adults from 

 29 to 31 days. 



In control work the employment of sweetened arsenical sprays appears to 

 have given the most satisfactory results. The author summarizes these results 

 as follows : " In 1914, the results of spraying the foliage with arsenate of lead 

 added to diluted molasses [arsenate of lead 3 oz., molasses 1 gal., and water 

 2 gal.] showed a loss of 24 per cent of the crop of gooseberries in a commercial 

 garden consisting of 100 currant and gooseberry bushes. In three adjacent 

 dooryards 41, 55, and 64 per cent of the gooseberries were infested. The cost 

 of the insecticide for eight applications of the spray to 100 bushes not including 

 labor amounted to 65 cts. In 1915, a baited gooseberry bush growing in the 

 shade showed a loss of 33 per cent of the berries compared with 79 per cent 

 of infested fruit on the check or control bush similarly located, while a treated 

 and untreated gooseberry bush in the sunshine showed an infestation of 17 

 per cent and 29 per cent, respectively. The poisonetl bait, consisting of .sodium 

 arsenite and diluted molasses, was applied to the lower branches of the bushes 

 with a bucket pump, while the upper branches were baited with a paint brush. 

 The cost of four baitings applied to 35 currant and gooseberry bushes without 

 labor amounted to 57.5 cts." 



The sweet potato root weevil in Florida, K. E. Bkagdon (Fla. Buggist, 1 

 (1911), No. 2, pp. 13-15). — A brief account of Cylas formicarius, which has 

 been found in eight counties of Florida, namely. Baker, Brevard, St. Lucie, 

 Palm Beach, Broward, Dade, Monroe, and Lee. 



Five years of starvation of larvae, J. E. Wodsedalek (Science, n, ser., 46 

 (1917), No. 1189, pp. 366, 567).— This paper relates to the larvae of Trogoderma 

 tar sale, a small beetle well known as a museum pest. The last of a large number 

 of specimens lived without food for 5 years, 1 month, and 29 days. 



The relation of the Malpighian tubules of the hind intestine in the 

 honeybee larva, J. A. Nelson {Science, n. ser., 46 (1917), No. 1188, pp. 3^3- 

 345). 



A new species of Paraphelinus from British Guiana, with a discussion of 

 the genus and the allied Aphelinus, J. Waterston {Bui. Ent. Research, 8 

 (1917), No. 1, pp. 43-58. figs. 6). — The genus Paraphelinus represented by five 

 species, including P. perkinsi n. sp., is considered at some length. 



Notes relative to the importation of Tiphia parallela from Barbados to 

 Mauritius for the control of Phytalus smithi, D. d'Emmekez de Charmoy 

 {Bui. Ent. Research, 8 {1917), No. 1, pp. 93-102, fig. 1). — An account of intro- 

 ductory work which has resulted in the establishment of T. parallela in 

 Mauritius. 



The parasites of Chrysomphalus dictyospermi in Spain, R. G. Mercet {Rev. 

 R. Acad. Cien. Madrid, I4 {1916), No. 11, pp. 776-788, figs. 5; ahs. in Rev. Appl. 

 Ent., Ser. A, 5 {1917), No. 7, p. 279). — A species here de.scribed as new under 

 the name Apliycus hesperidum is parasitic on C. dictyospermi on orange trees, 

 laureds, and oleanders in Spain. Two other parasites, Aphelimis chrysoniphali, 

 and Prospaltella lounsburyi, and a lady beetle {Chilocorus bipustulatus) are 

 also recorded as enemies of this scale in Spain. 



