ECONOMIC ZOOLOGY — ENTOMOLOGY. 251 



deposits a single winter egg in the crevices of cottonwood barli. The follow- 

 ing spring the young louse hatching from the egg ascends the trees, forms a 

 gall, in which a single generation of lice is produced, all of which are winged 

 and become the sunimei migrants. The summer migrants fly to beets, weeds, 

 and grasses and upon the leaves of such plants give birth to young which 

 descend to the roots and start new colonies of winged viviparous females." 



The San Jose scale in Nova Scotia, R. Matheson {Jour. Econ. Ent., 7 (1914), 

 No. 1, pp. Ufl-Ufl, fig. 1). — A discussion of the present status of this pest in 

 Nova Scotia where it was first discovered in the spring of 1911 on nursery 

 stock planted the precetling year, thus proving that it can survive the winter 

 there. 



A new cotton scale from Panama, T. D. A. Cockeeell {Jour. Econ. Ent., 

 7 (1914), No. 1, p. 148). — A new species from cotton is described as Icerya 

 zetelci. 



Outline of the work on the g'ipsy moth, and brown-tail moth, conducted by 

 the Bureau of Entomology, U. S. Department of Agriculture, A. F. Burgess 

 (Jour. Econ. Ent., 7 (1914), No. 1, pp. 83-87). — A brief summary of the work 

 now under waj'. 



What Massachusetts has accomplished for science in her fight against the 

 gipsy and brown-tall moths, F. W. Rane (Proc. 8oc. Provi. Agr. Sci., 34 

 (1913), pp. 59-63). — A paper presented before the annual meeting of the 

 Society for the Promotion of Agricultural Science, held at Washington, D. C, 

 November 11, 1013. 



The parasitism and reproduction of Empusa elegans n. sp., B. Majmone 

 (Centbl. Bald, [ctc.^, 2. AM., 40 (1914), No. 1-8, pp. 98-109, pis. 5).— This is 

 a report of studies of a new s-pecios of Empusa, found to attack and cause the 

 death of caterpillars and pupte of the brown-tail moth in the Province of 

 Campobasso, Italy, which is described as E. elegans. This fungus is said to 

 have been so abundant in the fall of 1909 that it caused the brown-tail moth 

 to disappear largely from the Province the following spring. 



A bibliography of 35 titles is appended. 



Infection experiments with eggs of the nun moth, J. Meves (Centhl. 

 Gesam. Forstiv., 39 (1913), No. 1, pp. 18-25). — The author finds that nun moth 

 caterpillars which emerge from eggs, the shells of which have been infected 

 by caterpillars which died the previous year from wilt disease, consume the 

 infection with the shell and die within a period of 11 days after emergence. 

 The infection can be transmitted by these caterpillars during their lifetime to 

 other caterpillars with which they come in contact. The virus can also be 

 transmitted from those which died the same or the previous year to healthy 

 caterpillars occurring in the vicinity without direct contact. Individual cater- 

 pillars may be immune to the disease. 



The Sporotrichum fungus and Arctia caja caterpillars, J. Pastre (Bill. Agr. 

 Alg^rie et Tunisie, 19 (1913), No. 13, pp. 283, 284; «&«• in Rev. Appl. Ent., 1 

 (1913), Ser. A, No. 11, p. 419). — It is reported that in the vineyards of Herault 

 the young larvae of this lepidopteran are often found dead or in a swollen 

 and flabby condition as a result of the attack of Sporotrichum globuliferum, 

 which supplements the work of the insect parasites, Apanteles caja, Degeeria 

 funebris, and Erynnia vibrissata. Artificial propagation experiments have 

 given poor results, the fungus apparently affecting only the first generation of 

 the larvae. 



A contribution to the study of the chemical composition of the silkworm 

 at different stages of its metamorphosis, R. Inoute (Jour. Col. Agr. Imp. 

 Univ. Tokyo, 5 (1912),^ No. 1, pp. 67-79). — "The chemical composition of the 

 silkworm is greatly changed in producing the cocoon, while the difference be- 



