APHIS LENTIGINIS. 59 



Oval, domed, smooth, nearly white or else warm 

 grey, shining, not mealy. Head ferruginous. Eyes red. 

 Thoracic and abdominal rings strongly marked. Eight 

 distinct dots or pore-marks on each side of the dorsum. 

 A broad, ferruginous band extends between the nec- 

 taries, which band becomes much broader at the bases 

 of the same. Cornicles short, white, with black tips. 

 Tips of the antennae, femora, and tarsi, blackish. 

 Cauda white. Rostrum very short. 



Two large eggs which occupied the greater part of 

 the abdominal cavity were obtained by dissection. 



Numerous colonies were found under the leaves of 

 the service-tree, Pijrus tormentaMs, at Wanstead, in the 

 month of October. This Aphis also feeds on Sorbus 

 aucu2Jaria. I have no doubt that it is A. sorhi, of 

 Kaltenbach and of Walker, although my specimens 

 very inconspicuously shewed the abdominal papillaD 

 (Hockerchen) indicated by Kaltenbach. 



Koch seems to have had some doubt whether the 

 winged insect he describes really belonged to the colony 

 feeding on the service-tree ; and Kaltenbach shares 

 his doubt, since Koch does not name the " charac- 

 teristic papillge on the last two hinder body-rings." 



Koch's figure, with its barred ferruginous abdomen, 

 scarcely accords with the form of my insect, but his 

 apterous insect much better agrees with my corre- 

 sponding female. 



I possess specimens, mounted and named by the late 

 Mr. Walker, which show well the abdominal processes 

 referred to above. 



Aphis lentiginis, Buckton. Plate LV, figs. 1, 2. 

 Apterous vwiparous female. 



Inch. Millimetres. 



Size of body O-OSOxO'OGO 2'02xl'54 



Length of antennse O'OSO 2*02 



cornicles 0-015 0-38 



