121 



also discovered great numbers of Dinotromhidimn tinctoriinn, L. 

 (1758), of a verj' large size, nearly 10 mm. long, which, in their 

 ■opinion, cannot be considered to be the perfect form of the 

 Microtromhidiuvi which they describe. The former appears 

 after rain and remains for a time on the surface of the soil and 

 once it has hiliernated does not appear again; thus in the year 

 1911 it appeared for the first time on the 5th April immediately 

 after a tornado and was seen for the last time on the 19th July. 

 Attempts to breed ])iii()tr()inl)i<l i u m f/'/icforimi) failed. 



Legendre (J.). La prophylaxie des affections causees par les mous- 

 tiques et la destruction de ces insectes a I'etat adulte. [The 

 prophylaxis of affections caused by mosquitos and the destruc- 

 tion of these insects in the adult stage.] — BnlL Soc. Path. 

 E.vot., Ti, no. 3, 12th March 1913, pp: 205-209. 



The author says that for several years he has insisted upon 

 'the necessity of destroying adult mosquitos, and that he has 

 pointed out that the use of the ordinary entomological net will 

 give remarkable results. He quotes the opinion of Colonel 

 Gorgas, whom he consulted as to the value of this method in 

 Panama, to the effect that where it was difficult to find and 

 destroy the breeding places, the use of the net was very valuable 

 and assisted g*reatly in keeping down the average number of 

 ■cases of malaria. A tool called a ''shipper" made of a piece 

 of wire gauze about 4 inches square, fastened to the end of a 

 stick, was employed with great success to kill mosquitos resting 

 on walls or on dark-coloured clothing and furniture, and was 

 found to be especially useful in the hands of children, who have 

 sharper eyes than adults. He quotes from Eoss' " Suppression 

 ■of Malaria " a comparison between a block of workmen's houses 

 in which the capture of adult mosquitos was regularly practised, 

 and some barracks, 3 miles from Panama, in which nothing was 

 done in this direction, with the result that the number of cases 

 of malaria amongst the soldiers was 42, as against 1 amongst 

 the labourers; during a period of 30 weeks, the average number 

 of Anoplieles killed daily in the workmen's dwellings was 

 about 40. 



The author insists that the idea that a mosquito is exceedingly 

 difficult to capture, either in flight or when at rest, is entirely 

 wrong, and lie urges that the capture of adult mosquitos should 

 be made quite as much a matter of course as the sweeping of 

 a house. 



€hattox (E.) & EouBAUD (E,). Sporogonie d'une hemogregarine 

 chez una tsetse (Glossina palpalis, R. Desv.) [Sporogenesis 

 of a Haemogregarine in Glossina -palpalis.'] — Bull. Soc. Path. 

 E.vot., vi, no. 3, 12th March 1913, pp. 226-233, 2 pis. 



The authors describe and figure this Gregarinid which was 

 found in the body cavity of tsetse-flies taken on the banks of the 

 Casamance at Kolda, in Senegal, and remark that this adds one 



