203 



Stcgomyia were cleared in 24 and 48 hours after the introduction 

 of five dragonfly larvae. Individuals of both dragonfly and water 

 bug larvae at times destroyed over a hundred mosquito larvae in 

 24 hours. 



It was also proved that dragonfly adults pursue and destroy 

 S. fasciata. 



BiSHOPP (F. C). Soleiiopofes capiUahts, a sucking Louse oJ Cattle 

 not heretofore known in the United States. — //. Agric. Res., 

 IVasIiiugtoii, D.C, xxi, no 11, 1st September 1921, pp. 797-801, 

 6 figs. 



A full description is given of all stages of both sexes of Solenopotes 

 capiUatus. Enderlein described this louse on cattle in Germany, 

 in 1904, but in 1916 Ferris considered it to be synonymous with 

 Linognat/iiis vitiili. L. Further material collected on cattle, which 

 was neither L. viiuli nor Haeinatopinus eiirysteniiis, Nitzsch, has 

 proved to be 5. capillaius, as described by Enderlein. 



CooLEY (R. A.). 18th Annual Report of the State Entomologist of 

 Montana. — Moiitana Agric. Expt. Sta., Bozcinaii. Bull. 139, 

 January 1921. p. 15. [Received 10th October 1921.] 



The most troublesome parasite of domestic animals in Montana is 

 Gastrophilus haemorrhoidalis, L. (nose-fly). This fly, though formerly 

 occurring in the eastern countries only, has spread during the last few 

 \'ears over the entire State. Hypoderma lineatiiin, Villers (ox-warble 

 fly) has been reported as attacking horses. Sarcopliaga kcllyi, Aid., 

 is chiefly important as being destructive to grasshoppers. 



Fighting Mosquitoes with Fish. — 7'th Ann. Rept. Inter nat. Health Bd., 

 Rockefeller Foundation. 1920, Neio York, Januarv 1921. pp. 20-23, 

 4 figs. [Received 14th October 1921.] 



The efficacy of top minnows {Ganibnsia affinis) as destroyers of 

 Anopheles larvae is emphasised. In 89 per cent, of the waters in 

 Hinds county, Mississippi, in 1919, and in 85 per cent in 1920, mosquito 

 breeding was completely controlled by this fish. This method is now 

 being adopted in Mexico, Central America and Peru throughout the 

 region where yellow fever occurs. 



Operations against Yellow Fever. — 7th Ann. Rept. Internal. Health 

 Bd., Rockefeller Foundation, 1920, New York, Januar\- 1921, 

 pp.. 102-109, 4 figs. [Received 14th October 1921.] 



During 1920 co-operative work against \-ellow fever was undertaken 

 in every region m which it is known to exist, and steady headway 

 is being made towards its control. In Mexico and Central America 

 the inauguration of control measures throughout the infected districts 

 has been authorised, provision has been made for the creation of a 

 special yellow fever commission, and about £5,000 at par have been 

 set aside for carrying out the work. Under the direction of the Board 

 of Health the epidemic in iMexico during the last six months of 1920 

 was checked. 



In July 1920 the entire eradication of yellow fever from Ecuador 

 was officially announced. The infection present in Guayaquil since 

 1842 has been completely controlled, and there is every reason to believe 



