June, '05] 



ENTOMOLOGICAL NEWS. 



193 



The 5". decisiun of Hagen is also probably only another variety. 

 Needham (Aquatic Insects in the Adirondacks, N. Y. State 

 Mus., Bui. 47, September, '01, p. 521), has remarked in regard 

 to assi?ftilatuvi, rubicundithun and ohtrusum that "they inter- 

 grade completely." Decisuni has been recognized as a syn- 

 onym of obtrusum by Calvert. Pallipcs has the size and form 

 of assimilatiu7i , the genital hamulesof the male are almost indis- 

 tinguishable from those of obtrusum, while the vulvar lamina of 



ro 



Sympetrmn pallipes, ventral view of 9 app. 



Sympetrum pallipes, lateral view of $ app. inverted. 



the female resembles that of rubicunduhan most closely, only in 

 some cases it is a trifle more inflated. While combining the 

 structural characters of these three forms, pallipes differs from 

 all of them somewhat in coloration. Perhaps it would be better 

 to list these as separate species until some one with abundant 

 material and the types at hand has threshed the matter over 

 thoroughly, especially as there is usually no difiiculty in dis- 

 tinguishing them. 



Sympetram vicinnm (Hagen). 



Two teneral females taken at Langford Lake, July 20, '03. 

 Currie reports one male from Wellington, September 2, '03 

 (Dyar). 



Sympetram semicinctam (Say). 



Three females from Langford Lake, July 20, '02. Kaslo, 

 August 6th, I female, and August 7, '03, i male (Currie). 



