680 EXPERIMENT STATION RECORD. 



means of combating Eriophyes ribis is largely quoted from the writings of C. War- 

 burton. It is urged that in order to combat this pest successfully all the fruit grow- 

 ers of a given district must cooperate. 



Diaspis pentagona on the mulberry and other insect pests {Or on. Agr. 

 [Argentina], 1 (1905), No. 7, pp. 91-99). — Diaspu pentagona is said to be one of the 

 most important pests of mulberries, and notes are given on its habits and life history 

 and on artificial methods for controlling it. These methods include the use of mix- 

 tures containing heavy oil of tar and carbonate of soda or kerosene fish oil and car- 

 bonate of soda. 



The mango weevil in Hawaii, D. L. Van Dine (Hawaii. Forester and Agr., 2 

 (1905), No. 8, pp. 231-233). — Qryptorhynchus mangiferse was found in July, 1905, in 

 the seeds of mangoes. 



It appears that this mango pest, while widely distributed throughout the Tropics, 

 has been recently introduced into Hawaii. The life cycle of the insect is passed 

 chiefly within the seed and the pest is therefore a difficult one to combat. In the 

 first lot of mangoes examined about 60 per cent was found to be infested. A strict 

 quarantine is recommended, together with the destruction of all infested fruits which 

 fall to the ground. If the adult beetles feed upon the leaves of the mango they may 

 be poisoned by arsenicals. 



Two new shade tree pests, M. V. Slingerland (New York Cornell Sta. Bui. 233, 

 pp. 47-62, figs. 8). — The author reports the occurrence of Kaliosy spiling a ulmi on 

 English and Scotch elms. 



This insect probably occurs quite generally in New York State. Sometimes 20 or 

 more larv?e were found mining in a single leaf. The larvse produce blisters on the 

 elm leaves, which show a dirty white color and shrivel up. On the European alder 

 A', dohrnii was observed. This insect also produces brown mines or blisters on the 

 leaves of the European alder. It is believed that it was introduced into America 

 about 20 years ago. The pest has been noted in a number of localities in New York 

 State. The life histories of both species are discussed. 



In combating these pests it has been found sufficient to bury the cocoons from 2 to 

 4 in. under the soil. By removing 1 or 2 inches of the sod or soil from beneath 

 infested trees about May 1 and burying it or otherwise treating it the pest can be 

 controlled. 



The fir Pissodes in the Vosges, M. Henry (Bui. Soc. Sci. Nancy, 3. ser., 6 (1905), 

 No. 2, pp. 19-26, pi. 1). — The author describes Pissodes picese, with notes on its habits, 

 life history, and injurious effects upon the fir trees. In order to combat this pest it 

 is desirable to mark all trees which show signs of infestation during the winter and 

 to cut these trees before the insects emerge in the spring. After such trees are felled 

 the bark should be removed in order to destroy the beetles underneath it. 



The buffalo carpet beetle, J. Fletcher (Canad. Ent., 37 (1905), No. 9, pp. 333, 

 334, fig. 1) . — This pest appears to be increasing in importance in Canada. In some 

 localities it has been found in considerable numbers on flowers out of doors. 



Notes are given on the habits and life history of the pest. It is suggested that the 

 beetle may be prevented from entering houses by the use of fine mosquito netting 

 put on early in the season. Carpets should be regularly and thoroughly beaten out 

 of doors, and all crevices should be treated with benzine, gasolene, or some similar 

 insecticide. 



Modern beekeeping-; its helps and hindrances, J. W. Blake (Mem. Roy. Cale- 

 donian Hort. Soc, 1 (1905), pt. 1, pp. 42-47). — A brief discussion is presented of the 

 comparative merits of different breeds of bees, the practical devices necessary for 

 successful beekeeping, foul brood, and other hindrances w T hich may be encountered 

 in the business. 



Sericulture in Italy, China, and Japan, H. P. Smith et al. (Mo. Consular Bpts. 

 [U. S.~\, 1905, No. 296, pp. 337-388) .—The present reports are in response to a cir- 



