14 BRITISH APHIDES. 



I do not see characters sufficiently distinct between 

 Myzocallis of Passerini and CalliiJterus of Koch, to 

 necessitate a separate genus. I have, therefore, united 

 these insects under one head. 



Callipteeus betulaeius, Kalt.^ Plate LXXXVII. 



Aphis tuderculata, Heyden (?). 

 „ antennata, Kalt. (?). 

 „ betulcB, Walk. 



Apterous viviparous female. 



Inch. Millimetres. 



Size of body 0-090xO-030 2-27xO-76. 



Length of antenna O'llO 2*80. 



)} 



cornicles 0-005 0-12. 



Linear, wholly green, slightly ochreous in the 

 anterior parts, shining, very rugose from the presence 

 of tubercles, each of which is furnished with a tuft of 

 capital hairs as in Chaitophorus. Front hairy ; eyes 

 red ; antennae very long, seventh joint twice as long as 

 the sixth. Cornicles short and trumpet-like. Tail 

 obtuse and small. 



Winged viviparous female. 



Linear, wholly bright green, not so pilose as the 

 apterous larva. Antennse long, and ringed with 

 brown. Seventh joint at least twice the length of the 

 sixth. 



Abdomen edged with small tubercles. Nectaries 

 and tail green. Legs long and green. Wings mode- 

 rate. Points rather rounded. S^tigma^ cubitus, and 



