760 EXPERIMENT STATION RECORD. 



The artificial remedies suggested include liandpiclcing, tlie use of arsenicals, 

 tlie destruction of pupa^, and the protection of parasites. 



A phylloxera upon the roots of the oak, B, Grassi and Anna Foa (Atti R. 

 Accad. Lincei, Rend. CI. Sci. FLs., Mat. c Nat., 5. sci:, 16 (1907), No. 7, i>p. 1,29- 

 1/31). — On the roots of Quercns sessiliflora, the author found large numbers 

 of PhyUoxcra corticalis which cause chai-acteristic tubercles as a result of their 

 attacks. The economic importance of this insect has not been definitely 

 .determined. 



The Monterey pine scale, D. Moulton {Proc. Davenport Acad. Sci., 12 

 (1907), pp. 1-25. pis. .'/, fig. 1). — A careful study was made of the life history 

 and habits of Physokermes insignicola which appears to infest only the Mon- 

 terey i)ine. The insect is described in its various stages. The reason for the 

 secretion of honeydew is not well understood. 



Among the important natural enemies of this scale insect mention is made of 

 RhitohiuH rentralifi, Microteri/s .siilrufi, etc. The internal and external anatomy 

 of the scale is described. 



The reproduction of Hylesinus piniperda, E. Knoche (Forstiv. Centbl., n. 

 set:, 29 (1907), No. H, pp. Ji7-'/-li80). — Large numbers of this insect were kept 

 under observation for the purpose of determining their breeding and egg-laying 

 habits. When kept in breeding cages, it appears that H. piniperda may lay 

 some eggs which have not been fertilized, but those eggs do not develop par- 

 thenogenetically. 



Some insect pests of rubber, H. C. Pratt (Agr, Bui. Straits and Fed. Malay 

 States, 6' (1907), No. .S, pp. 2'i'i-2-')l)}^Rhodoneura myrtoEH fenestrata causes 

 serious damage to gutta-percha. This insect is described in its various stages. 

 The larva commences its work upon the leaves of young shoots, mining in them 

 and sewing the leaves together. 



The merbau is also attacked by two unidentified species of Lepidoptera. In 

 combating these insects it is reconnnended that infested leaves should be 

 prom])t]y gathered by coolies and destroyed. 



The Hymenoptera of Middle Europe, O. Sciimiedeknecht (Die Ilymenop- 

 teren Mitteleuropas. Jena, 1907, pp. VII +801,. figs. 120). — The author is im- 

 pressed with the inisatlsfactory nature of isolated pamphlets and articles widely 

 scattered in different publications. Many years have therefore been devoted to 

 a comprehensive study of the Hymenoptera of Middle Europe for the purpose of 

 bringing descrii)tions of these species together in a handbook for the use of 

 systematic entomologists. The volume includes an account of the external 

 anatomy of Hymenoptera, their mode of life, the collection of these forms, the 

 general principles of classification, and a detailed monograph of the group 

 arranged under 22 families. 



Bee keeping: Some suggestions for its advancement in Massachusetts, 

 P.. N. (iATES (Ma.ss. Crop Rpt., 20 (1907), No. .',, pp. 26-3G).— The general 

 proJ)lems of bee keeping are discussed with particular reference to the possibil- 

 ities of this industry in Massachusetts. Notes are given on the diseases of bees 

 and on methods of caring for bees and bee ai)pliances. 



Wax moths and American foul brood, E. F. Phillips (U. S. Dept. Agr., Bur. 

 Ent. Bui. 7J, pt. 2. pp. 19-22. pis. .?). — It is sometimes claimed that wax moths 

 are of some benefit in destroying comb infected with foul brood. The commonest 

 species of wax moth is Galleria meUoneUa. but the lesser wax moth (Aehroia 

 f/risclht) is also sometimes found in beehives. P>oth of these species were 

 found by experiment to burrow through combs affected with foul l)rood, but 

 neither species fed upon the dried remains of bee larva? dead of the disease. 



