]16 BRITISH APHIDES. 



Hyalopteeus melanocephalus, Buckton. Plate LXXVII, 



figs. 5—7. 



Apterous viviparous female. 



Incli, Millimetres. 



Size of body 0-065x0-025 l-64x0-62. 



Length of antennae 0'030 0'76. 



cornicles 0*002 0-05. 



Long oval. Head broad, convex, tufted witli liair. 

 Smoky- black or grey. Eyes black. Colour of tlie 

 body buffy white, or very pale green. Abdomen 

 smooth, scarcely marked by rings, but these are dis- 

 tinct at the apical portion. Antennae white, spotted 

 at the joints. Cornicles and cauda very small, black. 

 Legs white, with sooty knees and tarsi. Rostrum 

 rather long for this genus. The whole insect is 

 plentifully covered with mealy powder. 



Pupa. 



Coloured like the larva, but the thorax is paler. 

 Points of the wing-cases sooty-grey. 



Winged viviparous feitiale. 



Small, ashy green, slightly mealy. Head, pro- 

 thorax, and thorax dull black. Abdomen large in pro- 

 portion to the rest of the body, pale greyish-green, 

 without bands or punctures. Cornicles and cauda 

 very small and black. Wings with greyish stigmata 

 and cubitus. Veins rather coarse and brownish-black. 

 The membrane finely stipled. Legs pale greenish. 

 Antennas fine and blackish. 



