20 Bulletin of the Brooklyn Entomological Society Vol. XII 



Hemelytra (in macropterous) extending much beyond abdomen, costal 

 membrane narrow, single-celled, cells growing larger posteriorly and 

 merging into membrane. Costal area long, narrowing posteriorly, cells 

 small, growing larger posteriorly and merging into membrane, nervures 

 dark; discoidal area narrow apically, rounded posteriorly and meeting 

 costal in an elevated suture, two fifths as long as the costal area from the 

 insertion of the wings. Membrane long, extending from anterior ex- 

 tremity of wing to the apex, where it merges into the costal membrane 

 and the costal area; discal cells small, marginal large, growing larger 

 posteriorly; all reticulations more or less infuscate, except discal cells. A 

 membrane extends downward from the hemelytra one cell deep around 

 the abdomen and conforms to its outline. 



Abdomen broadest at the second and third segments, tapering to a 

 rounded extremity. Male genital segment blunt, as long as the 2 preceding 

 segments together and provided with stout hooks; female segment nar- 

 rower and with a median keel. Long., 2.2 mm. ; lat., .9 mm. 



The brachypterous form dififers notably in size and shape, being not 

 more than two thirds the length of the macropterous, the prothorax much 

 reduced and flattened ; the membrane is nearly absent and narrow ; the 

 general shape is oval ; the hemelytral reticulations are also much smaller. 

 In other particulars it conforms to the macropterous. Long., .1.9 mm.; 

 lat., .9 mm. 



While colors have been given in the body of this description it is in 

 general terms; the general coloration ranges from a light grey, nearly 

 white, through darker grey, and brownish to nearly black. 



Type : Macropterous female, White Plains, June 26, 1910. Morphotype : 

 Brachypterous male, same locality, Sept. 25, 1909. Paratypes : Six macrop- 

 terous females, same locality, four same date as type, one Sept. 25, 1909, 

 one June 30, 1912. Six brachypterous females, and six males, same dates 

 as above, except one, Sept. 19, 1909. 



This species has been taken in one place only, a sloping grassy 

 meadow, going up from a rich marshy swale in a field, among 

 fine low grasses much intermingled with moss, by sweeping close 

 tQ the ground. On one occasion (June 26), some 150 were taken 

 by Mr. C. E. Olsen and myself. The short and long-winged 

 occur together, with the former greatly preponderating. The 

 period of greatest abundance is apparently in June, but they have 

 been taken in April, May, June, July, August and September. 



