236 THE CANADIAN ENTOMOLOGIST 



Webster, Bull. 51, Ohio Agri. Exp. Sta., pp. 111-117 {=mali), 1894. 



Fletcher, Rept. Canad. Cent. Exp. Farms, p. 199, 1895, and p. 163, 1896 

 and p. 206, 1898. 



Alwood, Hull. 100, Vag. Agri. Exp. Sta., p. 89, 1899. 



Harvey, Bull. 56, Me. Agri. Exp. Sta., p. 129, 1899, and 15th Rept. Me. 

 Agri. Exp. Sta., p. 129. 



Johnson, Bull. 26, (n.s.) U. S. Dept. Agri. (D. E.), p. 80, 1900. ' 



Lugger, Bull. 69, Minn. Agri. Exp. Sta., p. 192, 1900. 



Sanderson, Bull. 26 (n. s.) U. S. Dept. Agri. (D. E.), p. 67, 1900. 



Sanderson, Trans. Penns. Hort. Soc, p. 45 (=mali), 1901. 



Hunter, Bull. 60, Iowa Agri. Exp. Sta., p. 9<) i=mali), 1901. 



Schontcdcn, Marcellia, Avellino, II, p. 95, 96, 1903. and Ann. Soc. Ent. 

 Bclg. 47, p. 178, 1903. 



Pergande, Bull. 44, V. S. Dep. Agri., Div. Ent., p. 7, 1904. 



Tavares, Brotcria. I\', p. 103, 1905. 



Mtlrchal, Autun. Mem. Soc. Hist. Nat. XVIII, p. 305, 1905. 



Sanderson, Bull. 74, Del. Coll. Agri. Exp. Sta., pp. 137-149 (=fitchii), 1906. 



Theobald, Rept. Eco. Zool. 1905, pp. 30-32, figs. 10, 11, 14, 15 {--=fitchii), 

 1906. 



Gillette, Journ. Eco. Ent. I, p. 308, 190S. 



Schonteden, Mem. Soc. Ent. Belg. XII, p. 217, 1906. 



Cillette <S: Taylor, Bull. 133, Colo. Agri. Exp. Sta., p. 30, 1908. 



Theobald, Insect Pests of Fruit ( = /i7c/iii), p. 137, figs. 111-114, 1908. 



Tullgren, Upp. Prak. Ent. XXII, p. 56, 1913. 



Patch, Bull. 233, Maine Agri. Exp. Sta., p. 266, 1914. 



Davis, Bull. 112, U. S. Dep. Agri., 1914 (Oat Aphis). 



Aphis prHnifolicc Filch is given by Schontctlen as a synonym 

 of this species. As far as I can see, Fitch's species is only Aphis 

 pruni. 



Pnmifolice is described by Fitch in his F'irst and Second 

 Report on Noxious and Beneficial Insects of the State of New 

 York, p. 122, 1856. 



Description: 



Alale viviparous female (spring migrant): 



Head, pronotum and thoracic lobes almost black to olive 

 brown, the two last often very shiny; pronotum green in front 

 and behind. Abdomen green, with black lateral spots, 3 to 4 large 

 ones outside and 5 small ones mediad; a dark patch in many 

 at base of the cornicles,* one on the inside and two dark bars 

 caudad of the cornicles, the first broad, the second narrow. Anal 

 plate black. Cauda brown cr greenish brown in the middle, 

 dark at the edges. The antenna; are shorter than the body, black; 

 the two basal segments nearly equal in length, the second barrel- 

 shaped and narrow er than the first; "3rd nearly as long as the 6th, 



*Sanderson describes his fitchii as having a yellow spot at the base of the 

 cornicles. This I have never seen in any European specimen. 



