W. B. Johnson.] 

















Table I. — Mosquitos 



caught 



in 



Daily Examination oj 



the 



Medical Officer's Bungalow at Kad 



i Totals. 



una Junction, 1917-18. 















;Bu11. Ent. Research. Vol. 9. Pt. 4. 





















Weekit 









Total for 

 40 weeks. 





Year. 



1917. 





1917. 





1917. 1917. 





1917. 1918. 



1918. 1918. 





1918. 1918. 





Month. 



July. 





August. 





October. November. 





December. January. 



February. March. 





May. June. 



Percentages. 





From 

 To 



1 



7 



8 

 14 





29 

 4 



5 12 



11 18 



19 

 25 



26 

 1 





8 

 14 



15 

 21 



22 

 28 



29 

 4 



5 



11 



12 

 18 



19 

 25 



26 

 2 



3 



8 



9 

 15 



16 

 22 



23 

 29 



30 

 5 



6 

 12 



13 

 19 



20 

 26 



27 

 2 



3 

 9 



10 

 16 



17 

 23 



24 

 2 



3 

 9 



10 

 16 



17 

 23 



24 

 30 





5 

 11 



12 

 18 



19 

 26 



27 

 2 



3 

 9 



10 

 16 



17 



23 



24 

 30 





Anopheles — 

 A. costalis 



Sex. 



10 



10 





16 



46 



69 



76 



147 





92 



130 



158 



206 



155 



53 



97 



40 



80 



40 



78 



68 



38 



37 



8 



2 



8 



in 



19 



84 



81 



14(1 



116 



131 



101 







37 

 16 



33 



11 

 1 

 1 



37 

 9 

 7 

 1 

 1 



31 

 7 

 6 

 1 



23 

 3 

 3 

 3 



45 



26 

 5 

 1 



42 



2S 



7 



11 









A. funestus 



9 



'1 

 7 



3 

 1 





b 

 5 



■2 

 9 



18 

 10 



33 

 13 



34 

 32 





73 

 36 



92 

 24 



87 

 39 



110 

 42 



99 

 55 



16 

 10 



29 

 30 



12 

 3 



16 

 20 



15 

 11 



23 



7 



24 

 10 



11 



4 



11 

 8 



3 

 1 



4 

 2 



9 

 2 



3 

 9, 



6 

 2 



32 

 10 



24 



1? 



25 

 18 



19 



16 



16 

 15 



20 

 I"! 





15 



'99 }3,685 



a?} ™ 



s) « 



81-1% of total Anopheles 



A. rufipes 



A. pretoriensis 



s 



9 











t 



V 



13 



11 





24 

 2 

 1 

 1 



13 



1 

 1 



16 

 1 



3 



19 

 1 

 4 

 1 



24 

 4 

 9 

 2 



7 

 1 



14 

 1 



3 



8 

 2 



2 



1 

 1 



3 



2 



7 

 1 



1 





1 



2 



1 



1 



4 



4 

 1 

 1 



9 

 1 

 1 



9 

 5 

 1 



10 

 3 

 1 





3 

 1 

 1 



2 



16'6% „ „ 

 1-0% , 



A. domieolus 



9 





















1 



1 

 2 



1 



5 



1 



1 





1 







9, 



1 

























1 





2 





















0-5% „ „ 





? 

























1 



2 



7 





9, 











1 













































J} 2 ° 

 5} " 



04% „ „ „ 



A. flavicosta 



S 































3 





1 







1 



1 















1 

































A. nili 



9 

 $ 







m 

























1 



1 





1 





1 





















1 





























0-2% 





9 







i 



o 













3 



IS 





1 











1 

































1 





1 





















i} 3 



0-1% „ „ 



Rtcgomyia fasciata 



$ 



























3 



1 

































1 















9 s } « 







9 







1 

 o 













> 



H 

 O 















3 





1 











2 





















1 





u 



o 





1 









1 









Culex Group — 









































1 















































Oulex deceits 



S 







C 



1 



1 



3 



6 



8 



d 



2 



2 



2 



2 



2 



1 





1 



2 



2 



8 



3 





2 



3 







3 



3 



37 



9,9, 



?.l 



34 



41 



11 





30 



»S 



i\ 



11 



Ti 



l 1 ? 



11 





411} '«" 





Culex mvidiosus 



9 

 9 



1 



1 





2 



3 



10 



12 



2 

 2 

 2 



o 



(S 



CO 



2 



5 



4 

 1 



7 



8 

 3 



5 



2 



5 

 1 



3 

 3 



5 



3 



8 

 1 



8 



1 



7 

 2 



4 



3 



1 



2 

 2 



5 



27 

 1 



43 

 9, 



19 



37 

 3 



53 

 1 



6 



32 

 3 



o 



1 



30 



18 

 4 

 1 



9 

 2 



3 



6 

 9 



5 



21 

 1 



9 





85-7% of total Culex group 

 5-5% , 



Culex duttoni .. 



cJ 







s 













a 















































9, 



1 





a 



1 



1 















33 / 38 







9 







o 



H 





2 





3 



1 



o 





1 







1 

















1 





1 



1 









1 









4 



1 



o 



1 



3 



fi 



1 



9, 



1 



1 



1 



4-3% „ „ „ 



Culex ager 



S 

 9 







a 













=4H 



a 











1 



1 















1 















1 











1 



1 



1 









2 





1 





5} • 



1-0% „ „ ., 



Culex fatigans 



$ 

 9 



















<< 















1 







1 

































m 



















2} « 



0-2% 



Culex tigripes '. . . . 



9 

































1 







1 































1 





















3} 3 



0-3% „ „ „ 



Culiciomyia nebulosa . . 



6" 



























1 





































1 



























2?} 23 







9 





1 







6 



2 



3 



2 





1 



1 



2 





1 





1 

















































1 







1 



2-6% „ 



Mansonioides uniformis 























1 





2 

































































5} 3 



0-3% „ „ „ 



Total Anopheles 



24 



14 



26 



64 



104 



135 224 



230 



265 



306 



390 



357 



91 



176 



59 



127 



70 



113 



105 55 



64 



13 



8 



20 



17 



28 



128'l22 



189 



194 



177 



153 



07 



59 



46 



55 



45 



32 



71 



88 



4,541 



83-4% of total Mosquitos 



Total Stegomyia 





























6 



1 



1 











2 



















1 



1 



2 









1 







15 



0-3% „ 



Total Oulex group 





1 



2 



3 



11 



15 



24 



17 



6 



9 



11 



10 



16 



9 



9 



7 



7 



7 



17 



111 3 



1 



11 



8 



4 



1 



7 



8 



67 



67 



41 



76 



100 



4!) 



63 



56 



24 



23 



25 



38 



22 



2 



887 



16-3°/, „ 



Rainfall 1917 (July to November) = 37-7 ins. : 1918 (March to June) = 12-2 ins. 

 Total mosquitos examined in 40 weeks =5,443 ot which 83 '4 % were Anopheles. 

 Anopheles— $ 3,251 to 9 1,290 ; i.e., $ : $ : : 2-5 : 1. 

 Culex— <J 355 to ? 532 : i.e., <J : $ : : 2:3. 



