ECONOMIC ZOOLOGY ENTOMOLOGY. 249 



generations extending from January 22 to August 'U gave a total of 814, or 

 41 young per generation, while a third series of 22 generations extending over 

 the same period gave a total of 1,117. or an average of 51 young per generation. 

 The average number of young produced by the tirst form of each generation of 

 I he third series was HO. 



Notes are presented ou the English grain louse {Macrosipltum granuria), the 

 life history of which is under investigation. Records kept of the number of 

 young produced by the first offspring of each of 13 generations (between April 

 and October) gave an average of 16 young, while in a second series au average 

 of 14 young was recorded. The thirteenth generation of this species was still 

 producing young on October 19. The European grain louse (Sii)liocorynce 

 uvvnw) was found attacking the leaves and young stems of wheat, oats, barley, 

 and rye, and later the heads of the same grains. In 11)07 it was generally dis- 

 tributed over the State. An average of 15 young were produced by the first 

 born of each of 7 generations between January 10 and March 11. The corn leaf 

 louse (Aphis maiiUs) was collected from grain and Macrosiphum trifolii from 

 corn. 



A report on nursery inspection for 1908 is here given, in which is included 

 a compilation of the latest laws in the different States relating to nursery 

 inspection and nursery shipments. Notes are also given on the grape flea 

 beetle (Halticu clialybca), the grape phylloxera, buffalo tree hoppers (Ceresa 

 hubahis and ('. iaurina), the strawberry root louse {Aphis forbcsi), black 

 flies, etc. 



In a preliminary report upon the work with stalk borers in Minnesota, the 

 biology and injury of Papaipema species (P. nitela, P. f areata, and /'. cata- 

 phracta) are considered. P. furcata was found in the nursery boring in the 

 new growth of young ash trees. The work of the experimental garden and 

 insectary is briefly considered, and a list of abstracts of publications dealing 

 with insect pests of fruit, as reviewed in Experiment Station Reeord between 

 January and October, 1908, are given. Appended are A Comparative Study of 

 the External Anatomy of Plant Lice, by R. A. Vickery ; descriptions of three 

 new Hymenopterous parasites of the cabbage maggot {Loxotropa pegomi/ice, 

 Mcsocrina pegomyiic, and Aphareta pegomyice), by C. T. Brues; and descrip- 

 tions of the larv:e and pup;e of Papaipema nitela and P. eataphracta, and of 

 the larva of /'. furvitta, by II. J. Franklin. 



Report of the entomolog'ist, L. Bruner (Ann. Rpt. IVebr. Bd. Agr., 1908, 

 pp. 2ii7-3.'il, fig^- 3Z). — The first part of this report, on The Principal Insects 

 Injurious to Agriculture during 1900-7 (pp. 287-300), is by M. H. Swenk. Dur- 

 ing the period under report there have been strong indications of a revival of 

 chinch bug activities in several counties along the southern borders of the State. 

 The false chinch bug (Xystus angustatus) was unusually abundant in northern 

 Nebraska. The army worm was destructive to millet and oats in three counties 

 in 1906. Cutworms attacked corn, wheat, alfalfa, potatoes, and tomato plants. 

 The corn root worms were reported as a source of injury in Otoe and Hamilton 

 counties in 1907. Other insects reported include the rose chafer, wheat insects, 

 the clover-hay worm, blister beetles, cucurbit insects, granary pests, and the 

 clover mite. 



Au account is given by H. S. Smith of the Aphids Injurious in Nebraska dur- 

 ing 1906-7 (pp. 307-326). The spring grain aphis or green bug (Toxoptera 

 graminum), which was the source of great injury in States to the south during 

 1907, was found in Nebraska on wheat and rye. lint did not occasion any ap- 

 preciable loss. This was [jrobably due to the effective work of the parasite 

 l.ysiphlebus tritici. The English grain aphis (Mdero.siphiim yranaria), which 

 was found to be quite abundant over almost all territory where wheat was 



