ECONOMIC ZOOLOGY ENTOMOLOGY. 161 



combating these pests good results are reported from the use of a solution con- 

 taining arsenic, blue vitriol, and lime, and from the application of a 2 per cent 

 solution of barium chlorid. A proprietary remedy containing arsenic was also 

 found to be efficient. 



The harlequin cabbage bug-, F. H. Chittenden ( U. 8. Dept. Agr., Bur. Ent. 

 Circ. 103, pp. 10, jig. 1). — The life history and habits of this uisect were care- 

 fully studied for the purpose of presenting an economic account of the subject 

 and as a basis for suggesting means of control. The harlequin cabbage bug 

 is quite free from the attack of natural enemies, but an egg parasite {Trissolcus 

 'Diiirganiia') is quite effective. Among artificial methods of control the author 

 suggests clean cultural methods, the use of trap crops and hand methods. 

 Kerosense emulsion and other chemical methods have not proved satisfactory. 



The insect enem^ies of the boll weevil, W. D. Hunter, W. Newell, and \V. D. 

 Pierce {Crop Pest Com. La. Circ. 20, pp. 7, figs. 3). — Attention is called to the 

 importance of natural enemies in the control of the cotton boll weevil. Par- 

 ticular mention is made of Solenopsis geminata and parasitic insects. 



The anatomy and development of galls of Isosoma on Agropyron repens 

 and A. junceum, W. and J. Van Lekuwen-Reynvaan {Murcvllia. 6 (1007), Xo. 

 ^-'f, PP- 08-101, pi. 1, figs. 36). — Particular attention is given to the life history 

 and formation of galls of Isosoma gvaminicola. Notes are also gi\en on /. agro- 

 pyri, I. Ivyalipenne, and other unidentified species of the genus which form galls 

 on grasses. 



Papers on Coccidae or scale insects. The National collection of Coccidae, 

 C. L. Marlatt {U. 8. Dept. Agr., Bur. Ent. Bill. 16, tech. scr., pt. 1, pp. 10).— 

 Much interest has been taken in accumulating a thorough and representative 

 collection of Coccidae ever since the establishment of a Federal entomological 

 service. Brief notes are given on the contributions made to this collection by 

 various workers in this and other countries. At present the collection includes 

 1.072 species of Coccidfe. A programme has been worked out for the systematic 

 description of scale insects and a number of convenient devices have been 

 prepared for use in the preservation and study of these insects. 



Aspidiotus ostreaeformis, R. S. MacDougall (Jour. Bd. Agr. [London], IJf 

 (1908), No. 10, pp. 61Jf-616). — The insect is described in its various stages and 

 notes are given on its life history. It is recommended that all infested trees 

 before being planted should be fumigated with hydrocyanic-acid gas and that 

 infestations which may occur later should be treated with resin wash. 



San Jose scale in Oklahoma, J. F. Nicholson (Oklahoma Sta. Bui. 79, pp. 

 67-88, figs. 12). — This pest has been found by the author at 9 localities in the 

 State but is largely confined to city fruit trees. Notes are given as to its life 

 history, natural enemies and other means of control, together with extracts 

 from the State law relative to nursery inspection, and an account of spraying 

 experiments at Mulhall to determine the efficiency of the lime-sulphur wash in 

 Oklahoma and to compare it with that of whitewash. 



The whitewash proved to have no value as a scab destroyer. Excellent 

 results were secured from the lime-sulphur wash. For summer treatment 

 spraying with whale oil soap solution is recommended. 



Apple orchard pests in Kentucky, H. Garman (Kentucky Sta. Bui. 133, pp. 

 1-'i-62, pis. 13). — Detailed descriptive and economic notes are given on a variety 

 of apple insects in Kentucky including apple-leaf miner, apple-leaf skeletonizer, 

 apple-leaf crumpler, codling moth, apple-leaf roller, cankerworm, tent cater- 

 pillar, fall webworm, tussock moth, bagworm, woolly aphis, San Jose scale, 

 api)le-leaf hopper, periodical cicada, etc. 



The codling moth in 1907, A. L. Melander and R. E. Trumble ( Washington 

 8ta. Bui. 86, pp. 3-17, figs. 5). — Experiments carried on in 1907 at Walla Walla 



