1916] ECONOMIC ZOOLOGY — ENTOMOLOGY. 755 



Two timber-destroying fungi, J. B. Cusland and E. Cheel ( Agr. Qaz. N. S. 

 Wales, 27 (1916), No. 3, pp. 201, 202, pis. 2).— Descriptions are given of fungi 

 which cause tree rots of economic importance. 



Pleurotus nidiformis, a variable species which has received different names, 

 is a common phosphorescent toadstool found near the bases of Eucalyptus 

 and other trees in each of the Australian States. Pholiota adiposa, a common 

 and supposedly destructive parasite of timber in Europe, has been found at 

 Mount Wilson in New South Wales and has been recorded also for Queensland. 



Anomalies of growth in Pinus, C. von Tubeuf (Naturiv. Ztschr. Forst u. 

 Landw., IS (1915), No. 11-12, pp. 550-555, figs. 3).— Descriptions are given of an 

 anomalous shoot arrangement and bud formation and of a cone disease in P. 

 sylvestris. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



Ground squirrel control, W. T. Shaw (Washington Sta. Popular Bid. 99 

 (1916), pp. 11, pis. 2, figs. 4).— The station has given attention to the habits and 

 means of controlling three species of ground squirrels, the Columbian ground 

 squirrel (Citellus columbianus) , Townsend ground squirrel (C. townseiidi), 

 and Yakima ground squirrel (C. mollis yakimensis). 



Careful life history studies have been made of the Columbian ground 

 squirrel, and have shown that the squirrels come out of hibernation at Pullman, 

 Wash., about February 20 and remain active until July. The burrowing and 

 feeding habits of the animals indicate quite clearly that all remedies for con- 

 trolling them may be applied with more succass during the first nine weeks 

 of their spring activity. The remedies which have given satisfactory results 

 during this time include carbon bisulphid, trapping, and the use of poisoned 

 grain. Detailed directions for applying these remedies are given. 



Important foreign insect pests collected on imported nurseiy stock in 

 1915, E. R. Sassceb (Jmir. Econ. Ent., 9 (1916), No. 1, pp. 216-219) .—This is a 

 .nummary of the results of inspection work in 191.5. 



Inspection facilities in the District of Columbia, E. R. Sasscem {-Jour. Econ. 

 Ent., 9 (1916), No. 1, pp. 219-223, pis. 3).— A description of the in.sr-ertion equip- 

 ment. 



Foreign pests recently established in New Jersey, H. B. Weiss (Jour. Econ. 

 Ent., 9 (1916), No. 1, pp. 212-216). — A considerable number of insects which have 

 been discovered during the past two years to have become established in vary- 

 ing numbers in different parts of New Jersey are here recorded. It is stated 

 that practically all were introduced on imported nursery stock, and their 

 presence is considered an indication of the impossibility of keeping out all 

 foreign pests by a system of inspection. 



On the Hawaiian work in introducing beneficial insects, L. O. Howard 

 (Jour. Econ. Ent., 9 (1916), No. 1, pp. 172-179). — A review of the work carried 

 on in the Hawaiian Islands. 



Results of experiments on the use of cyanid of potassium as an insecticide, 

 W. Wellhouse (Jour. Econ. Ent., 9 (1916), No. 1, pp. 169-171. pi. 1).—A report 

 of preliminary experiments, conducted v.ith the view of ascertaining the effect 

 of cyanid of potassium on plant tissues and on scale insects and borers, begun 

 in 1915. Severe injury was found to follow its insertion in the stems and 

 trunks of plants and trees, and the insects were unaffected. 



Proceedings of the Entomological Society of British Columbia (Proc. Ent. 

 8oc. Brit. Columbia, n. ser.. No. 5 (1915), pp. 79-98, pis. 4). — The papers here 

 presented include the following: A Note on the Occurrence and Significance of 

 Anophelinse In British Columbia, by S. Hadwen (pp. 81, 82) ; Aphid Notes 



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