ECONOMIC ZOOLOGY — ENTOMOLOGY. 849 



Suggestions arc givon regarding tlie location of orchards and varieties to 

 obtain the best results and on insects and fungus diseases which are recog- 

 nized by the law. Formulas are also included for the prejiaration and apjilica- 

 tion of insecticides and fungicides. 



Insects new or unusual in Michigan, R. II. I'ettit (MichUjan Sta. Bill, .i'l-'i, 

 pp. S7-1JJ. I'liis. .i.i). — During llu> past few years a number of new insect pests 

 have appeared in Michigan and well-known insects i)reviously unimportant in 

 the State have caused considerable damage. Biological and economic notes 

 are given on tlieso pests, including strawberry louse, cutworms, Mediterranean 

 flour moth, greenhouse leaf tyer, wheat midge. strawberi\v-root worm. ))owder- 

 post beetles, strawberi-y weevil, wheat joiutworm, etc. 



Report on the work of the section for plant protection, C. Bbick {Ilainhunj. 

 Hot. Stautsiiist. Jahrcsber., 1005, pp. 2J{-39). — During the year under report 

 nearly 24(i,(X)0 packages of fruit were imported through Hamburg, and of this 

 number 2:!rt.()nO came from America. Among apples, the Baldwin constituted 

 4'.i per cent of the total import. An examination for San Jose scale showed that 

 10 per cent of the fruit was infested. Notes are given on a number of other 

 scale insects found on fruit and plants and on the injury caused by woolly 

 aphis, cutworms, bark lu'ctles, and other pests in the vicinity of Hamburg. 



Entomology, IT. S. Lawrence (Ann. Rpl. Dept. Agr. Bomhuii, 1905-6. pp. 

 6-8). — The locust plague has abated to a great extent, and it is not i)elieved 

 that serious depredations will be committed by these insects for some ycai-s to 

 come. Particular attention is given to Acriclium succinctmn as well as to white 

 ants, Earius insiilana, etc. Mention is also made of the possibility of th(> 

 accidental importation of cotton boll weevil. 



Some injurious orchard insects, G. II. Carpenter (Dcpt. Af/r. and Tech. 

 I list i: Jrchiiid ./our., 7 {1901), Xo. 2, pp. 2J,3-2-'i9, figs. 5). — Brief notes are 

 given regarding the preparation and application of suitable insecticides for 

 the control of codling moth, currant sawfly, plant lice, red spiders, scale 

 insects, etc. 



Catalogue of the Ephydridae, with bibliography and description of new 

 species, B. .J. Jones (I'liiv. Vol. Pubs., Hut., 1 {1906), l^'O. 2, pp. 15S-19S, pi. 1, 

 figs. If). — A list is given of the Ephydrid;e collected in California, together with 

 a bibliography of the subject, a description of a number of new species, and a 

 catalogue of all known species, with a key for identification. 



An investigation of evolution in chrysomelid. beetles of the genus Lep- 

 tinotarsa, W. L. Tower {Washington: Carnegie Inst.' Washington, 1906, pp. 

 X-\-321, pis. 30, tigs. 31). — For a period of about 11 years the author has studied 

 the methods of evolutionary transformation in animals as illustrated by the 

 members of the genus Loptinotarsa. A large part of the investigations were 

 made on the Colorado potato I)eetle with particular reference to its geographical 

 races. 



A number of experiments were tried, during which it was found that devia- 

 tions in temi)erature under which specimens of the Colorado potato beetle were 

 kept acted simply in accelerating or retarding the pigmentation, and that the 

 variations thus produced had no significance in subsequent generations. Data 

 collected on the gradual distribution of the Colorado potato beetle in this 

 country are of much value to students of this insect. 



With regard to the bearing of his studies on evolution, the author concludes 

 that the meml»ers of the genus Leptinotarsa. including the Colorado iwtato 

 beetle, have undergone direct rapid transformations in response to environmental 

 stinuili as a result of geographical dis])ersion. 



The cabbage and onion maggots, J. B. Smith and E. L. Dickekson {Neio 

 Jersey Slus. But. 200, pp. 27, pis. 9, figs. -})• — A series of experiments was car- 



