APHIS P7RARIA. 53 



Winged viviparous female. 



Inch. Millimetres. 



Expanse of wings 0*220 5*58. 



Size of body 0'075xO-030 l'89x0-76. 



Length of antennae 0*055 1*39. 



„ cornicles 0*015 0*38. 



Proportionally larger than the preceding form. 

 Colour variable, generally bright yellowish green. 

 Head, prothorax, and thoracic lobes black. Third 

 antennal joints tuberculate. Abdomen smooth, with 

 a series of irregular pale brownish bands more or less 

 confluent on the dorsum, and three or four dark spots 

 on each abdominal edge. Cauda and nectaries greenish. 

 Legs olive, with black tarsi and tibial tips. Wings 

 with greyish stigma and brown veins. Insertions 

 yellowish. Antennae same colour as the legs. Eyes 

 black. Rostrum reaches to the second coxse. 



Taken at Fernhurst, Surrey, on Salix caprec^. The 

 winged forms become scarce in the month of August. 

 Koch figures two other insects taken in company with 

 the above, which I agree with Kaltenbach are only 

 varieties of the same species. Almost every shade of 

 dark green, yellow green, and reddish yellow, may be 

 seen in the same swarm of the species described 

 above. This Aphis certainly is not AjjJiis salicis, of 

 Linnaeus. 



Aphis pyraeia, Pass. Plate LII. 



Myzuspyrarms, Pass. (?) 



Apterous viviparous female. 



Inch. Millimetres. 



Size of body 0*060 X 0*030 1-52 X 0*76. 



Length of antenna 0*050 1*27. 



cornicles 0*005 0*12. 



Body flat, oval. Dorsum rather convex. Segments 

 clearly defined. Lateral edges conspicuous. Sooty black 



