June 1S90. 



PSrCHE. 



355 



the antepenultimate segment ; appen- 

 dages (9) short (3 mm.) foliaceous, 

 broad, obtuse, wings hyaline, costa yel- 

 low ; pterostigma elongated, fuscous ; 

 membranule blackish gray ;the subnodal 

 sector sometimes not bifurcated ; 13-16 

 and 18 antecubitals ; 10-12 postcubitals ; 

 4-5 areoles beneath the pterostigma. 

 Length 51-60 mm. ; alar expanse 74-86 

 mm. ; pterostigma 4 mm. 



Hab. Labrador ; Fort Resolution 

 and Saskatchewan, Brit. Amer. ; one 

 $ White Mountains, N. H. 



This species is very much like A. 

 borealis from Europe ; I am not able 

 to separate the males, except that the t 

 spot on the front has a larger and more 

 rounded head in A. septentrlonalis ; 

 the appendages of the female are more 



widely separated at the base, less broad 

 and somewhat incurved in the European 

 species. I consider the two species as 

 local varieties, but owing to the obvious 

 diflerence in the appendages of the fe- 

 males it seems more prudent to keep 

 them separate for the present. I have 

 compared 15 specimens of A. septen- 

 trionalis and 9 specimens of ^. borealis 

 from Lapland, Sweden, Silesia and 

 Switzerland. Both are arctic species. 

 Many years ago I saw a specimen from 

 the Wilui River, Siberia, but this speci- 

 men is not at hand and as at that time 

 I believed A. sitchensis to be the same 

 species I am imable now to say if the 

 Siberian specimen belongs to A. borea- 

 lis. 



DESCRIPTIONS OF SOME NEW NORTH AMERICAN 

 DOLICHOFODIDAE. 



BY WILLIAM M. WHEELER, MILWAUKEE, WIS. 



(^Contifiued from p. J/J.) 



Gymnopternus poenitens, n. sp. ^ 

 Length 2.75 mm. ; length of wing 2.75 mm. 

 Dark metallic green. Face moderately 

 broad, covered with hoary dust. Antennae 

 black throughout, third joint large and of 

 the usual shape, somewhat pointed and 

 covered with conspicuous whitish pubes- 

 cence; pubescence of the arista, which is 

 inserted in the middle of the dorsal con- 

 tour of the third joint, appressed and 

 perceptible only with difficulty. Front 

 rather dull metallic green ; cilia of the in- 



ferior orbit white. Thoracic dorsum shin- 

 ing blackish green, posteriorly with a bril- 

 liant golden reflection, apparently without 

 any traces of dust. Scutellum blackish 

 green with a golden reflection, bearing a 

 few black hairs besides the usual setae. 

 Pleurae anteriorly metallic greenish black, 

 posteriorly black, overlaid with hoary dust. 

 The yellow tegulae have black cilia. Abdo- 

 men blackish green, lacking the golden 

 reflection of the thorax and scutellum; 

 venter black, dusted with white; hypo- 



