THE COMMON FLEA 



is a fit representative of the Pulicidce, and the illustrations 

 set out below will convey a better idea of its meta- 

 morphoses than a detailed description. It breeds in 

 neglected dirty houses, and its general appearance is 

 only too well known. Professor J. Arthur Thomson 



Fig. 33. 



Fig. 34. 



Fig. 36. 



Fig. 35. 



Fig. 33, Egg. Fig. 34, Larva. Fig. 35, Pupa. Fig. 36, 

 Imago of Common Flea. 



facetiously calls it " The Nimble Flea," and tells us 

 that, of the 500 known species, nearly one-tenth of 

 these (50) are found in Britain. In structure, activity, 

 mode of existence, piercing and sucking apparatus, and 

 the rest this energetic little insect is of extreme interest, 

 G 77 



