ECONOMIC ZOOLOGY — ENTOMOLOGY. 253 



Among those mentioned as attacking sliade trees are the elm leaf beetle 

 (GaleruceJIa lutcola), the English elm ix)uch gall (Tetraneura ulmisaccuU), 

 the false maple scale (Plienacoccus acericola), spruce bud scale {Physokermes 

 picew), and tulip tree scale {Tmimeyella liriodcndri). Forest tree pests noted 

 include the forest tent caterpillar, locust borer {CyUenc robinke), and spruce 

 aphid (Mindariis ahictinus). Among the miscellaneous insects noted are the 

 drug-store beetle (Sitodrepa pantcea), mason bees {Osiiiia felti), white winged 

 Bibio (Bibio alhipcnnis), and Bolitophila cinerea. 



Lists are given of publications of the entomologist and additions to collec- 

 tions. In an appendix, which is part 2 of A Study on Gall Midges (E. S. R., 

 30, p. 656), the author deals with the subfamily Itonididinse, which comprises 

 by far the larger number of the family and includes practically all the gall 

 making forms. Keys to the tribes, genera, and species and colored plates of 

 the galls formed are Included. 



Additional notes on Porto Eican sugar cane insects, T. H. Jones (Jour. 

 Econ. Ent., 7 (1914), No. 6, pp. 461-463).— The data here presented are supple- 

 mentary to those given in the accounts by Tan Dine, previously noted (E. S. R., 

 29, p. 353; 30, pp. 355, 350). 



The California pear thrips in Maryland, W. M. Scott (Jour. Econ. Ent., 7 

 (1914), No. 6, pp. 478, 479). — The author reports the discovery of this pest in a 

 small Kieffer pear orchard near Baltimore, where the leaves were curled and 

 blackened at the tips and around the margins, and most of the blossom clusters 

 destroyed. 



The status of spraying- practices for the control of plant lice in apple 

 orchards, P. J. Parkott and IL E. Hodgkiss (New York State Sta. Bui. 402 

 (1915), pp. 193-210, pis. 2, figs. 2).— Three species of plant lice, the rosy apple 

 aphis (Aphis sorbi), apple aphis, and oat aphis (A. avencc), are injurious to 

 apples in New York, the two former normally causing the greatest losses in crop 

 production. It is pointed out that experiments by the station indicate that the 

 most effective and satisfactory means of protecting young fruit during its 

 formative stage is through the destruction of plant lice on the expanding buds. 



" The most efficient spraying mixtures are nicotin solution, oil emulsions, or 

 soap preparations. The physical features of the location of the orchard, such 

 as the direction and elevation of the slopes of the land, proximity of water and 

 character of soil, have a marked influence on the development of the buds. The 

 time for effective spraying will therefore vary with individual orchards as well 

 as with different varieties of apples." 



Controlling plant lice in apple orchards, F. H. Hall. (New York State Sta. 

 Bui. 402, popular ed. (1915), pp. 3-7, figs. 2). — A popular edition of the above. 



Four aphids injurious to the apple, B. S. Pickett (Illinois Sta. Circ. 179 

 (1915). pp. 4)- — The species noted are the apple aphis, the rosy apple aphis 

 (Aphis sorbi), the European grain aphis, and the clover aphis (A. bakeri). 



Control of the San Jose scale in Missouri, L. Haseman (21issouri Sta. Bui. 

 132 (1915), pp. 9, figs. 4)- — With the passage of the Nursery and Orchard Inspec- 

 tion Act in 1913, the station was authorized not only to inspect for insect pests 

 and diseases but also to assist with the cleaning up where these were found. 

 Since the San Jose scale v>-as the one pest of most vital importance to horticul- 

 ture in the State steps were at once taken to assist in its eradication. 



Spray experiments are said to show that two applications, one in late fall and 

 one in the spring before the buds open, are required in the case of badly infested 

 orchards. Where but one application is made equal results are obtained from a 

 late fall or early spring application. It is stated that so far as the control of 

 the San Jose scale alone is concerned, lime-sulphur and commercial miscible oils 

 gave practically the same results. 



