183 



Giill., and Empoa rosae, L. The life- histories and habits of these are 

 noted and compared |see this Review, Ser. A, vi, p. 207]. 



In experiments with these leaf-hoppers as carriers of fire-blight 

 {Bacillus amylovorus), positive results were obtained with E. mali, but 

 no infections were observed in the associated species and the role of 

 these as potential carriers of the disease is doubtful. Natural enemies 

 include various small spiders and Hymenopterous parasites. A 

 common and destructive enemy of E. rosae is the egg-parasite, 

 Anagnis armatus, Ashm. For protection from leaf-hoppers, soap and 

 nicotine spray should be applied against the younger nymphs, and 

 weeds that harbour the insects should be destroyed. 



Severin (H. C). Insects and Plant Diseases injurious to Plums and 

 Sand Cherries. — OtJi Ann. Kept State Entomologist S. Dakota for 

 Period ending 30th June 1918^ Brookings, pp. 7-31, 15 figs. 

 [Received 14th February 1919.] 



The growing of plums and sand clienies in South Dakota is 

 seriously hampered by insect pests, and proper remedial measures are 

 necessary to sav» many crops from being ruined, Insects injurious 

 to these fruits include Samia cecro'pia„'L., Mineola indiginella, Z. (leaf 

 crumpler), the A-phids, Hyahpterus arundinis, F. (mealy plum aphis) 

 and Aphis se'ariae, Thorn, (rusty-brown plum aphis), Tetranychus 

 telarius, L. {bimaculatus, Harv.) (red spider), Bryohia praeiiosa, Koch 

 {pratensis, G-arm.) (clover mite). Sphinx drupiferarum, A. & S. (plum 

 sphinx), Malacosoma americana, F. (tent caterpillar) and Neurotoma 

 inconspicna, Norton (web-spinning sawfly), all of which attack the 

 leaves. Conotrachelus nenuphar, Hbst. (plum curculio) and Coccoforus 

 scutellaris, Lee. (plum gouger), attack the fruit. The twigs, branches 

 and trunk are infested with Aegeria {Syanthedon) pictipes, Gr. & R. 

 (plum tree borer), Cejesa_huhalus, F. (biiifalo tree-hopper), and the 

 scales, Lepidosaphes idmi, L., and Aspidiotus ancylus, Putn. General 

 recommendations for spraying are given and the appropriate measures 

 against the various pests enumerated are shown in a table. 



ViNAL (S. C). Control of Insect Enemies of Garden Crops. — Common- 

 wealth of Mass. State Bd. Agric. Boston, Circ, no. 85, June 1918, 

 26 pp. [Received 24th February 1919.] 



This popidar bulletin deals with the insect enemies of garden crops 

 under the headings of general feedeis, and special or selective feeders, 

 these being arranged in alphabetical order according to the crops 

 attacked. The usual insecticides and methods of use are also given. 



Mackie (D, B.). Some Aliens we do not want, why we do not want 

 them, and how they may arrive. The European Corn Stalk Borer. 



— Mthly. Bidl. Col. State Commiss. Hortic, Sacramento, vii, no. 9, 

 September 1918, pp. 541-545, 5 figs. 



In the abstract of this paper that appeared in this Review, 

 Ser. A, vii, p. 60, the statement was inadvertently made that Pyrmista 

 nuhilalis (European cornstalk borer) had been introduced into 

 California from Europe. This is not the case, as the author's remark 

 upon its introduction " to our shores " referred to the Atlantic shores 

 of the United States and not to those of California. 



