102 BRITISH APHIDES. 



down the stems and leaves. Their semi-chitinous 

 covering is marked by sutures, which cut up the back 

 into apparent plates like the carapace of a crustacean. 

 These young forms forcibly recall to mind the very 

 curious dimorph of the Aphis of the maple, Cliito- 

 ^hoTus aceris, which will be afterwards described. 



Winged viviparous female. 



Incli. Millimetres. 



Expanse of wings 0-220 5*58. 



Size of body 0*060 XO'OSO 1-52 X 076. 



Length of antennae 0*065 1'64. 



„ cornicles 0*008 0*20. 



Robust. Bright yellow. Eyes reddish. Thorax, 

 band on prothorax, a double row of lateral spots, and two 

 or more large dorsal bands, shining black. Autennoe, 

 nectaries, femora, and tarsi also black. Underside 

 wholly green. Insertions of wings yellow. Stigmata 

 and veins greyish black. Cauda small and pilose. 

 The winged form does not appear so plentifully as the 

 apterous, and seems to occur late in the year. The 

 only specimens I have taken were from greenhouses, 

 from the end of October to November. 



The larva"^ are common at Haslemere, Chichester, 

 and Wanstead, from the month of April, 



Aphis myosotidis, Koch, Pass. Plate LXXII. 



Apterous viviparous female. 



Inch. Millimetres. 



Size of body 0*070x0-035 1*77x0*88. 



Length of antennse 0*040 1*01. 



„ cornicles 0*010 0*25. 



Body long oval, bright green, finely stippled like 

 shagreen, usually much distended with sap, and then it 

 is slightly shining ; if less distended the body is pitted 



