Voice and Wing-tone of Flies, Gnats, &c, 



i^ 



-9- 



T~n s 



^ 



Rhyngia roUrata. Ciilex annulatus {male.) Culex annulaius {female.) 



i 



^: 



-^- 



I 



:€zizc 



Culex pipifins [male and female. 



^■ 



=^ 



m 



l?=tzt:,: 



Bees. 



Vi i 



H \ 1- 



:i=i=:it 



Bombus terrestris, B. terr. 



[small insect.) {larger insect.) 



B. miiscorum. 

 [female. ) 



.Ci- 



=& 



I 1 I 



rzifizifc*: 



.^-i-i-i^ 



Male B. muscoram. AmmopMla 

 {very small insert.) sabulosa. 



Anthidium manicatum. 



^ 



^^ 



