PEMPHIGUS FILAGINIS. 129 



Oval, pale j^ellowish-green or dark grey, thickly 

 covered with a white powder. Antennae and eyes 

 black. Legs yellow and moderately long. Tarsi and 

 tips of tibias black. Rostrum reaches to the second 

 coxa). 



Winged viviparous female. 



Inch. Millimetres. 



Expanse of wings 0*230 5'84. 



Size of body 0-080 X 0-030 2-02x0-76. 



Length of antennaB 0-020 0'50. 



Head, thorax, and eyes dark brown or black. 

 Third antennal joint slightly imbricated, Abdomen 

 oval, yellowish-green or orange, powdered. Legs 

 rather short and darkish yellow. Wings with mem- 

 branes rather fuscous yellow. Insertions yellow. 

 Stigma transparent, pale green, with a darker internal 

 spot. Veins green and ver^^ fine. Stigmatic vein 

 curved. Eostrum reaches to the second cox^e. 



Oviparous female. 



Oblong, dull yellow. Eyes very small. Antennae 

 short and simple, the joints restricted to four. Legs 

 very short. This sex is mouthless, the sucking organ 

 being represented by two buccal plates. 



Found hiding under the woolly flower-bunches of 

 the cudweed Gnaphalium germanicum. The apterous 

 forms some years ago were taken by Mr. J. Hardy as 

 far north as Scotland. The insect seems to be more 

 plentiful in France than in England. 



Li concluding this description of the British Pem- 

 phigince, I believe M. Lichteustein will allow me to 

 add a short extract from a letter he addressed to me 

 in 1877 : as he has since in public expressed his 

 views, I may be permitted to quote his words. 



*' The fact on which I claim the attention of my 

 Entomological colleagues is, that the underground 

 Pemphigince (P. Boyeri, P. ca^rulescens) lay pup^e, 



