Dec.,1918 Bulletin of the Brooklyn Entomological Society 111 
This species runs down to neglecta Becker in Becker’s key to 
the North American species of Siphonella, but the cheeks are 
much narrower than in that species, and the anterior thoracic 
bristles are absent in neglecta: 
Professor Aldrich had identified specimens of this species in 
his collection as equa Becker, but on receiving specimens of equa 
from him I noticed that there were no intrahumeral bristles on 
any of them and on my drawing his attention to the fact he in- 
formed me that though he had specimens that did have the bris- 
tles and were the same as those I have now described the type 
specimen of Becker’s equa from Idaho, which he possesses, does 
not have the bristles. He further informs me that he has one 
specimen returned to him by Becker with the manuscript name 
misera which is the same as setulosa. 
INTERESTING NEW SPECIES OF MIRIDA FROM THE 
UNITED STATES, WITH A NOTE ON ORTHOCEPHALUS 
MUTABILIS (FALLEN) (HEMIP. MIRIDZ).* 
By Harry H. Knicut, Ithaca, New York. 
Heterocordylus acaciz new species. 
Very similar in general form to malinus but smaller, black with the 
hind femora coral red. 
6. Length 5.2 mm., width 1.7 mm. Shape of head, antenne, and the 
vestiture of fine yellowish pubescence intermixed with deciduous white 
tomentose pubescence, very similar to that of malinus; black, hind femora 
coral red with tips fuscous, the basalar plate reddish; genital claspers dis- 
tinctive of the species, the right clasper long and slender, curved, thus 
differing from the short and broad right clasper of malinus. 
9. Very similar to the male, slightly more robust. 
This interesting new species was found breeding on Acacia 
constricta and a white flowering Acacia (probably A. farnesiana), 
it being more numerous on the latter plant. The nymphs are 
very similar to those of malinus, having the blackish hind femora, 
but in size smaller. At the time of collecting, July 7, the nymphs 
* Contribution from the Department of Entomology of Cornell Uni- 
versity. i 
