234 THE CANADIAN ENTOMOLOGIST 



abdominal papillae before the cornicles. Antenna? black and shorter 

 than the bod>'. Cornicles rather short, black. Cauda black, promi- 

 nent. 



Aphis rumicis, Linnanis. 



Aphis papaveris Fabricius. 

 Aphis thlaspeos Schrank. 

 A phis /arc? Scopol i . 

 Aphis alriplicis Fabricius. 

 Aphis aparines Schrank. 

 Aphis a r mat a Hausmann. 

 Aphis dahlia- Moslcy. 

 Aphis horteusis Fabricius. 

 Aphis alriplicis Buck ton. 

 Aphis euonymi Fabricius. 

 Aphis idicis F'abricius. 

 Riimicifex Amyot. 

 Meconaphis Amyot. 



Linnaeus, S>>t. Nat., 11, 7.34, .5 and 7.36, Kk* 

 Theobald, Kept. Eco. Zool., 1913, p. 27, 1914. 



This very abundant black aphis, which occurs on such a great 

 variety of plants, especially Docks {Rumex spp.), Beans (Fabria 

 spp), Poppies {Papaver spp.) and Euonymus spp., was found by 

 myself breeding in small colonies on apple trees at Wye in July, 

 1913, and again at Borough Green in Kent. In the same year I 

 also found numbers on an apple tree near Heme Bay in Kent. 

 In July, 1913, it was also sent me from the Cyder and Fruit Re- 

 search Station at Long Ashton, near Bristol, from apple trees. 

 In Kent only apterous vi\iparous females and their larvae were 

 found, but from Long Ashton alata', as well as aptera? and larva? 

 were sent. Specimens from apple trees near Exeter, Devonshire, 

 were also received during the same year. 



The so-called "Black Dolphin" or "Collier" appears, however, 

 to be only a casual visitor, and has never been reported as causing 

 any material damage. The apterae can at once be told from the 

 black Aphis {M.) nigra by being mealy, and from the dark mealy 

 Aphis cratccjii bv being globose and not flattened. 



*gor other references vide my pai't''' in Journ. Bd. Agr-. (England and Wales) 1912, pp. 407:476. 



