16 BEITISH APHIDES. 



Inch. Millimetres, 



Lengtli of antennge 0*120 3*04. 



)} 



cornicles 0'005 0-12. 



Colour yellowisli green. Form long oval, apex 

 pointed. Eyes fine red. Antennse very long, longer 

 tlian tlie body, and ringed with black. Cornicles very 

 short, body setose. Cauda inconspicuous. 



Winged viviparous female. 



Incli. Millimetres. 



Expanse of wings 0*380 9*64. 



Size of body 0*110 X 0*030 2*80 X 0*76. 



Length of antennge 0*180 4*56. 



„ cornicles 0*005 0*12. 



Long oval, almost fusiform. Abdominal apex acute. 

 General colour bright green. Head with an obscure 

 linear brown patch, and obvious stemmata. An- 

 tennge very long, ringed with black at the joints, and 

 often decked with cottony tufts. The seventh joint 

 nearly equal to the sixth. Thoracic tubercles and 

 scutellum warm brown. The antennge rise from 

 obscure frontal tubercles. Abdomen mottled green, 

 more or less dusted with fibrous matter ; lateral edges 

 furnished with minute warts. Cornicles about twice 

 as long as broad. Cauda small, pointed, and hairy. 

 Legs very long, green, with black knees and tarsi; 

 irregularly tufted. Sternum with a dark squarish 

 patch. Rostrum reaches to the second coxge. Wings 

 slightly fuscous, long, and narrow, pointed at their 

 apices ; costa and stigma pale green ; other veins 

 brown and clouded at their ends. The pupa is coloured 

 much like the larva. 



This fine insect locates itself in small companies at 

 the summits of the shoots of the hirch Betula alha. It 

 is very active and runs just before taking wing. It 

 has some resemblance to B. platanoides . Though 

 perhaps not very plentiful anywhere, it may be taken 



