32 BEITISH APHIDES. 



adults. Tarsi black. Rostrum very short, reacliing 

 only to the first coxse. 



This insect, as a larva, is very like Gallipterus coryli, 

 but the hairs are non-capitate. Taken on the Alder, 

 Alnus glutinosa, at Haslemere and at Edgware towards 

 the end of May. 



Winged viviparoiis female. 



Inch. Millimetres. 



Expanse of wings 0'230 5-84. 



Size of body 0070X0-030 i-77x0'76. 



Length of antennse 0*090 2*27. 



„ cornicles O'OOS 0-12. 



Small, wholly bluish or yellowish green. Eyes 

 brown. Antenna long and ringed with black. Sixth 

 and rudimentary seventh joints very short ; together 

 not equal to the fifth. Abdomen slightly tuberculose. 

 Nectaries very small. Legs pale green and short. 

 Rostrum very short, rather beyond the first coxse. 

 Wings moderately long. Cubitus and costa green. 

 Stigmata grey. Veins very slender, with a tendency 

 to expand at their apices into a cloudiness. Habits 

 active, but rather solitary ; one, or two insects at most, 

 being found under a single leaf. The winged female 

 occurs at the end of June. Two anal papilla (after- 

 lappchen) are obvious. 



Pterooallis juglandicola, Kalt.j Plate XOII, figs. 6-— 8. 



Lachnus juglandicola, Kalt. 

 Aphis juglandicola, Walk. 

 Gallipterus juglandicola, Koch., Pass. 



Apt&t'ous viviparous female. 



Inch. Millimetres. 



Size of body 0-055 X 0'030 1-39 x 076. 



Length of antennae 0-020 0-50. 



„ cornicles 0*002 0-05. 



