94 THE CANADIAN ENTOMOLOGIST 



Siphocoryne angeliccE, CEstlund, Aphididse of Minn., p. 70, 1887. 

 Rhopalosiphum caprecB, Gillette, Jour. Ec. Ent., vol. IV, p. 320^ 



1911. 

 Siphocoryne caprece, Theobald, Rep. Ec. Zool. for 1912, p. 87. 

 Siphocoryne caprece, Essig., Univ. of Calif. Tech. Bull., vol. I, 



No. 7, p. 342, 1917. 



Siphocoryne essigi, n. sp. 



Hyadaphis pastinaccB, Essig, Pomona Jour, of Ent. 1911, p. 534. 

 This species Which was well described and figured by Essig, 

 differs from pastinacce by having the pre-caudal spine, and from 

 caprece by the long antennal spur and in other ways. 



Siphocoryne pastinacae (Linn.). 

 Aphis pastinaccE, Fauna Suecica, p. 259, 1761. 

 Aphis xylostei, Schrank, Fauna Boica, p. 107, 1801. 

 Aphis pastinaccE, Fabricius, Systema Rhyngotorum, p. 269, 1803. 

 Siphonophora pastinacce, Buckton, vol. II, p. 24, 1879 (caprese). 

 Hyadaphis pastinacce, Schouteden, Mem. Soc. Ent. Belgique. p. 



229, 1906. 

 Hyadaphis xylostei, Davis, Jour. Ec. Ent., p. 493, 1910. 

 Rhopalosiphum pastinacce, Gillette, Jour. Ec. Ent., pp. 320-322, 



1911. 

 Rhopalosiphum xylostei, Gillette, Jour. Ec. Ent., p. 320, 1911. 

 Hyadaphis pastinaccE, Essig, Pomona Jour. Ent., p. 534, 1911. 

 Rhopalosiphum xylostei, Murtfeldt, Jour. Ec. Ent., vol. 4, p. 226, 



1911. 

 Syphocoryne pastinacce, Theobald, Rep. on Ec. Zoology for 1912, 



p. 88. 

 Syphocoryne xylostei, Essig, Univ. of Cal. Tech. Bull., vol. I, No. 



7, p. 324, 1917. 



While Linnaeus took his pastinaccE from Pastinaca saliva, and 

 Schrank took his xylostei from the European honeysuckle, Lonicera 

 xylosteum, we now know that the latter food plant is an over- 

 winter host for pastinacce, and, as the descriptions of these species 

 do not differ in any important particular, we believe xylostei should 

 be considered a synonym of pastinacce. 



' Siphocoryne grabhami. Cockerel]. 

 Canadian Entomologist, vol. XXXV, p. 342, 1903. 



