WOOLLY APHIDS OF THE ELM. 297 



Hyadaphis flavus Kittel. (aquilegiae Koch) (trirhodus Walker). 



Schouteden, 1906a, p. 230. 

 Hyalopterus trirhoda (Walker) Pass. (H. aquilegiae Koch). 



Buckton, 2, p. 115. 

 A. sp. 



Aphis vialvae Walker (A. malvae Pass, not S. malvae Pass.) 



Buckton, 2, p. 43. 



CALTHA. Marsh Marigold. 



C. palustris L. 



Aphis calthae Koch. Koch, p. 48. Theobald, 1911-12. 



CLEMATIS. Virgin's Bower. 



C. Flammula L. 



Aphis clematidis Ferrari. Del Guercio, 1900, p. 140. 

 C. ligusticifolia Nutt. 



Mysiis varians Davidson. Davidson, 1912, p. 411. 

 C. recta L. (lerecta.) 



Aphis clematidis Koch. Kaltenbach, 1874, p. 5. 

 C. Vitalba L. 



Aphis clematidis Koch. Kaltenbach, 1874, p. 5. 



Aphis urticae Fab. (urticaria Kalt.). Ferrari, 1872, p. 65. 



Aphis vitalhae Ferrari. Lichtenstein, La Flore. 

 C. sp. 



To.roptera clematidis Del Guercio. Phillips and Davis, 1912, p. 8. 



DELPHINIUM. Larkspur. 



O. sapellonis. 



Aphis rociadae Cockerell. Cockerell, 1903b, p. 115. 



RANUNCULUS. Crowfoot. 



R. acris L. Tall Crowfoot or Buttercup. 



Aphis dianthi Schrank. Walker, 1850a, p. 394. 



Aphis ranunculi Kalt. Kaltenbach, 1.874, P- lO- 

 R. bulbosus L. Bulbous Crowfoot or Buttercup. 



Pemphigus ranunculi Kalt. Kaltenbach, 1874, p. 10. 



Rhopalosiphum dianthi (Schrank) Koch (persicae, Puceron du 

 pecher, Morren) (rapae Curtis) (A. tloris rapae Curtis) 

 (dubia? Curtis) (vastator Smee) (persicaecola Boisduval) 

 (Rh. persicae Pass.) Buckton, 2, p. 17. 



Rhopalosiphum persicae (Sulzer) Pass. (A. dianthi Schrank) 

 (A. vulgaris Kyber) (A. rapae Curtis) (A. dubia Curtis) (A. 

 vastator Smee). Passerini, 1863, p. 20. 

 R. californicus Benth. 



Pemphigus (californicus Davidson) (ranunculi Davidson). Dav- 

 idson, 1910, p. 37^ and 191 1, p. 414. Essig, 1912a, p. 703. 



