GENERIC CLASSIFICATION OF APHIDIDAE. 89 



writer considers composed of apterous forms, which really belong in 

 older and well-recognized genera, but which can not be definitely 

 placed until the alate forms have been secured and studied. 



Genus SCHOUTEDENIA Riibsaamen. 

 1905. Schoutedenia Riibsaamen, Marcellia, v. i, p. 19. 



This genus, which was described for ralumensis Rub., is here listed 

 as unknown. The gall formed by the species is described but the 

 writer, never having been able to obtain either gall or insect, would 

 be able only to guess at its position from the description. 



Genus CLAVIGERUS Szepligeti. 



Clavigerus Szepligeti, Rovaraszati Lapok, v. 1, p. 4. 



This genus was described in the only volume issued of the Journal 

 cited. The writer has been unable to secure a copy or any details 

 of the description given. 



ADDENDA. 



The following generic names have been employed hy Mordwilko 

 (Fauna Russ. vol. 1, Aphidodea) without, apparently, the mention 

 of any species in connection therewith. They have not been con- 

 sidered in the foregoing paper: Anameson, Aorison, Chaetosiphon, 

 Corylobium, Elatobium, Euaulax, Eurytkaphis, Halmodaphis, 

 Impatientinum, Jaxart aphis, Nasonovia, Orobion, Paczoskia, 

 Sitobium, Staticobium, Tlja, Turanaphis, Uroleucon (subgenus), 

 Uromelan. The subgenera Dactynotus Raf., Cladoxus Raf„, and 

 Adactynus Raf., have not been considered. 



