THE CANADIAN ENTOMOLOGIST 173 



AA. Blue-black, slaty or pink, cornicles black, globose and 



mealy kochii 4 



AAA. Black. 



B. Somewhat flattened; mealy cratcBgi 5 



BB. Globose; somewhat mealy; often with 



white flecks rumicis 6 



BBB. Globose; not mealy; all legs 



black nigral 



II. No cornicles lanigera 8 



Aphis pomi, De Geer. 



Aphis mail Fabricius (non Oestlund, etc.). 

 Aphis oxyacanthce Schrank (non Koch). 

 Aphis padi Sanderson (non Linn?eus). 

 Aphis pyri Kittel (non Boyer, Koch, etc.). 



De Cxeer, Mems. Ill, p. 5:]. pi. Ill, figs. 18-21, 1773. 



Fabricius, Syst. Ent., p. 737 (pyri-mali), 1794; Ent. Syst., p. 216 (ponii), 

 1794. 



Schrank, Fn. Boica. II, p. 115 (mali), p. 115 (oxyacanthae), 1801. 



Kaltenbach, Mono. Pflanz., p. 72, 1842. 



Koch, Die Pflanz., p. 107, pi. XX, figs. 143, 144, 1857. 



Passerini, Gli Afidi, p. 34, 1860; Aphid. Ital. a.z. an. fig. II, p. 163, 1862. 



Walker, Ann. Mag. Nat. Hist., se. 2, II, p. 269, 1848; Zoologist. \'I, p. 2251, 

 1S4S; List. Homop. B. Mus., p. 905, 1852. 



Ferrari, Aphid. Lig. Ann. d. Mus. Civ. Stor. Nat. Genova II, p. 68, 1872. 



Macchiati, Bull. Soc. Ent. Ital., p. 255, N. 82 (mali), 1887. 



Buckton, Mono. Brit. Aph. II, p. 44, pi. L (part), 1879. 



Taschenberg, Prakt. Ins. kunde, pt. V, p. 53 1880. 



( Jrmerod, Man. Inj. Ins., p. 284 (mali, Kochinete), 1890. 



Cowen, Bull. 31, Colo. Agri. Exp. Sta., p. 120, 1895. 



Fletcher, Kept. Ent. and Bot. Canada, 1895, pp. 147-163, 1890. 



Ormerod, Handb. Ins. Orchd.'and Bush Fruits, p. 6 (mali, etc.), 1898. 



Fletcher, Kept. Ent. and Bot. Canada, 1898, p. 206 (mali), 1899. 



Smith, Bull. 143, N. Jersey Agri. Exp. Sta., p. 23, 1900. 



Forbes, Circ. 36, 111. Agri. E.xp. Sta., p. 32, 1901. 



Leonard!, Gli Insetti Nocioi. Ill, p. 221, 1901. 



Sanderson, Trans. Penn. Hort. Soc, pt. II, p. 45, 1901, and r2th Rept. 

 Del. Coll. Agri. Exp. Sta., p. 191, fig. 10 (padi), 1901, and 13th Rept., p. 130, 

 1902. 



Gillette, Bull. 31, U. S. Div. Ent., U. S. A. Dept. Agri., p. 53, 1902. 



Tullgren, Upp. Prak. Ent. XIII, p. 79 (mali Koch), 1903. 



Schonteden, Ann. Soc. Ent. Belg. XLVII, p. 173, 1903, and Marcellia; 

 Avellino II, p. 93, 1903. 



Theobald, 1st Rept. Eco. Zool. (Brit. Mus.), p. 27, 1903. 



Ta\ares, Broteria, Lisboa, II, p. 165, No. 16, 1903. 



Saunders, Rept. Ent. and Bot., 1903; Sess. Pap. 16, p. 193, 1904. 



Marcha! and Chateau, Autun. Mem. Soc. Hist. Nat. XVIII, p. 273, 1905. 



Carpenter, Eco. Proc. Rov. Soc. Dublin I, pt. 4, p. 301, 1905. 



Dewar, Farmers' Bull. VIII, p. 12, Orange River Colony, 1905. 



