870 EXPEKIMENT STATION RECORD. 



gives a detailed report on the number of crates, barrels, and l:)askets of fresh American 

 fruit received in Hamburs, and on the proportion which were found to be infested 

 with the iSan Jose scale. 



Aspidiotus ostreasformis and related species, L. Keh {Bot. ^fus., Alt. Pjlan- 

 zenschntz, Hamburg, 2 {1SS9-1900), pp. 13, fig. i) . — Upon examination, the author 

 found that the species hitherto known in German j* as A. odrescformis is really A. pgri, 

 and that the true ostreseformis also occurs in Germany. The detailed description of 

 the species is therefore given. 



Sumach, as a remedy for combating- Phylloxera, G. Flori.\xo {Staz. Sper. 

 Agr. Ital.,33 {1900), No. 1, pp. 45-55) . — Infusions of the wood and leaves of this 

 plant were placed in the soil around infested grapevines fur the purpose of determin- 

 ing whether the substance had anj' destructive effect upon Phylloxera. Entirely 

 negative results were obtained in all exj^jeriments. 



The life history of Arctia phalerata, A. Gibsox {Canad. Ent., 32 {1900), No. 

 12, pp. 360-37 G). — The author descril^es the egg of this species, 7 stages in the larval 

 development, and the pupa. The length of the pupal stage was found to be about 

 12, days. The food plants of the first brood were dandelion and plantain; the second 

 brood was found only on the dandelion. 



The structure and life history of the harlequin fly, L. C. Miall and A. R. 

 Hammond {Oxford: Clarendon Pres.9, 1900, pp. 191, pi. l,figs. 129). — In this book the 

 authors have described in detail the life history and relations of Chironomous dorsalis 

 to other Diptera, the larva, pupa, adult and embryonic conditions, and various ana- 

 tomical, histological and other details connected with the structure of this insect. A 

 bibliography is appended to the book. 



On the genera of the chalcid flies belonging- to the subfamily Encyrtinse, 

 W. II. AsiiMEAD {Proc. r. S. Xat. Mus., 22 {1900), pp. 323-412).— The author gives 

 an analytical table for the determination of species, together with descriptions of a 

 number of new species. 



A new sporozoon in the larvae of Diptera, L. Leger {Compt. Rend. Acad. Scl. 

 Paris, 131 {1900) , No. 18, jip. 722-724) • — A new species of this group of animal organ- 

 isms was found in larvte of the genus Ceratopogon, and is named Schizocystis gregari- 

 noides by the author. Brief notes are given on the anatomical characters and 

 metamorphoses of this jiarasite in the intestines of the host. 



Note on Cordyceps sinclairii, W. B. Benham ( Trans, and Proc. Neic Zealand 

 Lii't., 32 {1S99), pp. 4-S, }il. 1) . — This species of fungus was found by the author in 

 New Zealand, infesting the larva of a species of Cicada. The fructification of most 

 of the species of Cordyceps hitherto studied is known only in the ascospore stage. 

 This species, on the other hand, was found by the author in the conidiospore stage. 



Directions for collecting and rearing dragon flies, stone flies, and May 

 flies, J. G. Needham {E.rtr. U. S. Nat. Mus. Bui. 39, 1899, pp. 9, figs. ^).— Brief direc- 

 tions for collectors and students of these groups of insects. 



Fumigation with hydrocyanic acid, H. H. Cousins {.Tour. Soutlieast Agr. Col. 

 Wye, 1900, No. 9, pp. G7-70). — Experiments were made in cooperation with Mr. T. 

 Y. Theobald, in treating currant bushes by this method for black currant bud mite. 

 Infested currant bushes which were intended for i)lanting were placed in a heap on 

 the ground, covered with canvas and subjected to the fumes of hydrocyanic acid for 

 about one hour. All the mites were killed by this treatment. In applying this 

 method to currant bushes growing in the field, it was found that the chemicals would 

 cost about $1 2 per acre. 



Experiments with hydrocyanic-acid gas were also made in vineries and green- 

 houses, for the purpose of testing the efficiency of this method in destroying the 

 mealy bug. The experiments gave satisfactory results and no injury was noted on 

 the foliage of chrysanthemums, maidenhair ferns, and other plants whicli were sub- 

 jected to the treatment. 



