860 EXPERIMENT STATION RECORD. 



A structural study of the caterpillars. — II, The Sphingidse, W. T. M. Forbes 

 (Ann,. Ent. Soc. Amer., .} {1911), No. 3, pp. 261-281, figs. i6).~TMs paper is in 

 continuation of that noted above. A table for the separation of the genera and 

 subgenera of Sphingidse is included, together with a field key to the sphingid 

 caterpillars of the eastern TJnited States. 



Spraying for the codling moth in 1910, W. E. Rumsey (West Virginia 8ta. 

 Rpt. San J(>s6 Scale, etc., 190',)-10, pp. 29-31, figs. 5). — ^The spraying experiments 

 conducted in 1909 and previously noted (E. S. R., 23, p. 259) were repeated. 



For the purpose of testing the relative merits of 4 mist sprays and 1 coarse 

 high-pressure spray against the codling moth Ben Davis trees were used in 

 1910. The details, which are presented largely in tabular form, have led to the 

 following conclusions: 



" The 2 years' work on spraying for the codling moth in West Virginia seems 

 to indicate that the coarse-high-pressure spray is the proper one to use just 

 after the petals fall and then. use a good mist spray about tlie middle of July to 

 catch the second brood of larvre (worms) that are attacking the fruit at this 

 time. It appears that enough side wormy apples would be prevented by this 

 second spray to justify the cost of material and time required to apply it. 

 Two sprayings, therefore, are enough to prevent losses from the ravages of the 

 codling moth, but where diseases are prevalent more fungicidal sprays are 

 undoubtedly necessary." 



Spraying experiments with the plum curculio in 1910 presented in tabular 

 form, " indicate that the proper time to spray apple trees to prevent injury by 

 the plum curculio is at the same time the first application is made for the 

 codling, moth." 



Observations on the hiology of the eudemis, P. Marchal (Rev. Vit., 36 

 (1911), Nos. 9J,0, pp. 690-695; 9.',1, pp. 721-72.'i) .—In this paper the author con- 

 siders the succession of generations during the year, the feeding liabits of the 

 moth, oviposition, number of eggs deposited, incubation period of the egg, the 

 effect of insecticides upon the eggs, the hatching of the egg, the first migration 

 and first attack, action of nicotin on the larvse at the time of emergence, etc. 



Hosts and galls of American gall midges, E. P. Fklt (Jour. Econ. Ent., Jf 

 {1911). No. 5, pp. Ji51-.'il5). — This list summarizes our knowledge concerning 

 the food habits of the American gall midges or Itonidiie, including certain St. 

 Vincent and otlier South American forms studied by the author. 



New species of gall midges, E. P. Felt {Jour. Econ. Ent.. // {1911), Nos. 5, 

 pp. Jf76-/i8Ji, fig. 1 ; 6, pp. 5Ji6-559). — One genus (Kronomyia) and 41 species are 

 described as new to science. 



Sewage works and street gullies as breeding grounds of mosquitoes, E. H. 

 T. Nash {Surveyor, J/1 {1912), No. 1052, pp. i,3Ii-h36, figs. 5).— A report by the 

 medical officer of health of work against Culcx pipiens at Wimbledon, England. 



A danger to our citrus belt, D. L. Crawford {Mo. Bui. Com. Hort. Cal., 1 

 (1912), No. 2, pp. Ji6-'i9, figs. 2). — This pajier consists of some of the more im- 

 portant facts relating to tiie Mexican orange maggot {Anastrepha [Trypeta] 

 ludens) given in a paper previously noted (E. S. R., 25, i>. 56). 



Review of work by Pantel and Portchinski on reproductive and early 

 stage characters of muscoid flies, C. H. T. Townsend {Proc. Ent. Soc. Wash., 

 13 (1911), No. 3, pp. 151-110). — Largely a review of work previously noted 

 (E. S. R., 23, p. 562). 



Announcement of further results secured in the study of muscoid flies, 

 C. H. T. Townsend (Ann. Ent. Soc. Amer., Jf (1911), No. 2, pp. 121-152).— This 

 is an announcement of studies of the female reproductive system, eggs, and 

 first-stage maggots of the tachinid flies and their allies, conducted in con- 

 tinuation of investigations previously noted (E. S. R., 20, p. 456). 



