ECONOMIC ZOOLOGY ENTOMOLOGY. 763 



iiiid wild Idack fiff ( I'iriis str^phnnocnrpa). It is thought, however, that rein- 

 ftH-tion from the wild fruit does not to any great extent annul the value of 

 work done in on-h.-irds to clirck tlu' lly. 



Paraffin remedy v. poisoned bait [for the fruit fly], C. "W. Mally (Agr. 

 Juiir. Capr (looil lloin; 32 {190S), No. .7, pp. G09-(il.'i) . — In experiments con- 

 ducted it was found that Cemtitis capUaia was not attracted to paraffir. oil 

 in comparison with i)ineapple juice and treacle (molasses). Bees were at- 

 tractetl to honey when sprayed on a hedge near a hive, l»ut paid no attention to 

 utlier sweets. This fact is of importance in connection with the application of 

 I'oisoned halt for tlie fruit fly. 



In a supi)lementary note, the government entomologist (C. P. Lounsbury) 

 lirietly reports additional experiments. He considers that the experiments here 

 reported show that sjiraying the trees with poisoned baits, as previously recom- 

 mended, atfords greater protection against the pest than the exposure of vessels 

 of parattin oil. 



Notes on a chalcid (Syntomaspis druparum) infesting' apple seeds, C. It. 

 (KosiiY (.!//;(. Hut. Soc. Amcr., 1 (li)OH), So. 1, i). 3S). — This species, i»reviously 

 known to infest the seeds of the wild ai)ple in Crimea, has been found gen- 

 • ■raliy distributed in New York State where it infests the cultivated varieties as 

 well as the wild apple (Mains coronaria). 



The Smyrna fig and its pollinating insect. C. P. Lqunsbitry (.l.r/r. Jour. 

 (II pi- (loixl Jlopc. 3.i ilHOS). \<i. .'). pp. .'tdl-'jiiS, fiif. 1). — An account is given 

 of the role of HUtstophufia (jroHnorum in the fertilization of the tlowers of the 

 Smyrna fig. It is stated that the insect has been recently introduced into 

 South Africa. 



Report of the investigations of the olive fly in France in 1907, Chapelle 

 ^Liul. Mens. Off. licnsrig. Agr. [Paris], 7 (li)OS), No. 8, pp. 979-990).— \ de- 

 scription of Ducus olcw, its life history, habits, and the nature of its injury is 

 followed by an account of the work in combating it. The author concludes 

 from researches in Italy and those here reported that the etticiency of the 

 application of sweetened arsenicals is clearly demonstrated. The formuhe of 

 insecticides used are given. Analyses of the oil from olives treated with these 

 ins«'cti(ides showed the presence of only traces of arsenic. 



The fight against the olive fly, J. Chapelle (Bui. Mens. Sac. Cent. Agr., 

 Ilort. rt Arrliin. Mcr, .',S (1908). Xo. 8, /)/). 239-2.'f7).—A more extensive report 

 of these experiments is noted above. 



The pear-tree cephid. P. Passy (Rev. Jfoii. [Paris], 80 (1908), Xo. 20, pp. 

 '/7'/-J77. figs. 6).— Pear trees are reported to be injured to a considerable ex- 

 ti-nt and ajtiile trees less so by i'cpliiis coniprcssiis which, as a larva bores in 

 the young twigs. The ichneumon, Piinpla instigator, plays an active role in the 

 repression of the pest. 



Isolation of orange groves and fumigation for the white fly, A. W. Morrill 

 //(/. I'niit anil I'rodiuv Xr\rs, 1 (1908). Xo. 8, pp. 3, 7). — A brief sunnnary of 

 resulls from fumigation experiments with hydrocyanic-acid gas wliich had been 

 ol)tnine<l since tiie jtreiiaration of Bulletin 7(i of the Bureau of Kntomology of 

 this ]>epartment already noted (K. S. U., liO, p. .">.">». These show a wid«'r 

 M|»pliiai»ilily for the white tly than at first sui)i>osed. An isolation of l'»MI or 

 ■'!<K» ft. will ordinarily insure innnunity from the occurrence of the tly in in- 

 jurious abundance for at lejist one seasoiL The owner of a grove of 10 acres 

 <>r more need not be deterreil from fumigating on account of an infesteil grove of 

 any size adjoining on one side. There are comparatively few groves that nei'd 

 lie considered impracticable to fumigate on account of their locatitm. 



Observations upon the parasitism of an aphid that attacks citrus fruits, 

 r. I'lKKA.MoM (Atti R. Int. Incoragy. Xapoli, li. srr., .j9 (1907), pp. 1-7, pi. 1).— 



