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Dunn (L. H.). A New Mosquito {Aedes whitmorei) from Colombia. — 



Proc. Entom. Soc, Washington, D.C., xx, no. 6, June 1918, 

 pp. 128-130. [Received 15th November 1918.] 



Aedes ivh'tmorei, sp. n. is described from specimens captm-ed at 

 Muzo, Colombia. Other examples were bred from larvae taken from 

 a small, heavily shaded pool of clear, but apparently stagnant, water. 



Headlee (T. J.). The Problem of Mosquito Control.— 4M Ann. Rept. 

 Entom. Soc. Ontario for 1917, Toronto, 1918, pp. 49-59. [Received 

 16th November 1918.] 



Anti-mosquito work in New Jersey does not aim primarily at the 

 eUmination of disease, since malaria occurs only in a few limited areas 

 and is in each case a strictly local problem. The State contains, 

 however, some 296,000 acres of salt marsh, large portions of which 

 are gradually being reclaimed for urban properties or seaside 

 communities, while most of it is potentially good salt-hay land. 

 Mosquito control therefore has for its object the comfort and well- 

 being of the citizens. The problem of control alone can be considered ^ 

 under existing conditions : that of extermination must be relegated 

 entirely to the future. Plans for analysing the mosquito fauna of a 

 district or State and for making a map of infested districts are outlined. 

 Wherever the charts show the presence of invasions, these must be 

 traced to the source from which they come [see this Review, Ser. B, 

 V, p. 141]. Examinations of a sewage-charged salt marsh showed 

 enormous numbers of Culex salinarius and C. pipiens, with small 

 numbers of Ochlerotatus {Aedes) sollicitans and 0. (A.) cantator in larval 

 and pupal stages. The majority of the mosquitos found in houses 

 were C. salinarius, with a smallet number of C. pipiens which had 

 evidently migrated a distance of 2| miles from their breeding-place. 

 The charts should show the mosquito breeding-grounds and a seasonal 

 map of the more or less permanent breeding-places ought to be made. 

 Plans for the ehmination of these haunts, which consist largely of 

 drainage problems, should then be prepared and efforts made to obtain 

 and organise co-operation of the persons interested and if possible 

 financial help from the public treasury. It is important, when the 

 initial work has been completed, that it be maintained. With the 

 present methods the protected territory will at times be troubled by 

 some mosquitos, because the enormous increase in breeding surface, 

 brought about by a prolonged rainy period, may be such as the 

 organisation cannot cope with. Some statistics are given computing 

 the value of mosquito control as shown by results. 



Baker (A. W.). The Effect of Stable and Horn Fly Attacks on Milk 

 Production. — 48th Ann. Rept. Entom. Soc. Ontario, for 1917, 

 Toronto, 1918, pp. 91-93. [Received 16th November 1918.] 



In a previous paper the author discussed some repellents for stable 

 flies [Stomoxys'] and horn flies [Lyperosia] on cattle [see this Revieiv, 

 Ser. B, V, p. 187]. During 1917 spraying experiments have been carried 

 out in order to discover the effect of fly attacks on milk production and 

 the benefit to be derived from a prevention of these. The results 

 showed remarkable benefit from spraying, treatment before the morning 



