64 FLIES FOR MARCH. 



No. 4. WATER CRICKET. 



Orde r, Hem ipte ra 

 Family, Hydrom etrida 

 Genus, Velia 

 Species, rivulorum. 



No. 5. GREAT DARK DRONE (Saw Fly, 



Gkeat Dakk Dun). 



Order, Hymenoptera 

 Family, Tenthredin idee 

 Genus, Dolcrus 

 Species, niger. 



No. 6. COW-DUNG FLY. 



Order, Diptera 

 Familij, Muscidcs 

 Genus, Scatojjhaga 

 Species, stercoraria. 



