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DESCRIPTION OF SPECIES. 
1. MERMIRIA BIVITTATA. Serv. 
Female .—Face tricarinate, very oblique, carinae prominent; the me¬ 
dian sulcate but scarcely double. Vertex rather short, round, and 
slightly margined in front; scarcely as long as broad. Promotum 
slightly contracted in the middle, lateral carinae indistinct, median dis¬ 
tinct. Prosternal point short, tuberculiform. Elytra and wings pass¬ 
ing the abdomen. 
Color. —Yellowish-green; often tinged with reddish-brown. Behind 
each eye starts a dark brown or black stripe, which reaches the pos¬ 
terior border of the pronotum and extends upon the elytra. Elytra 
opaque from the base to the middle, transparent beyond, tinged with 
brown; the first half of the internal margin has a longitudinal green¬ 
ish stripe, and a similar stripe near the anterior margin, but not reach¬ 
ing quite half the length of the elytra. Wings transparent; nerves 
and nervules of the apical half dark. Legs greenish; the femora striped 
above with reddish-brown. 
Male. —Similar, but smaller. 
Dimensions .—Length to tip of elytra, 1.50 to 1.65 inches; posterior 
femora 1 inch; posterior tibiae 0.95 inch; elytra 1.08 inches. 
I am not certain that this species has been observed in Illinois, but 
think I have seen one specimen taken in the state. 
\ 
2. TRUXALIS BREVICORNIS. Linn. 
Female .—Pale green, somewhat dotted over with brown; sometimes 
the back is ash-brown and sometimes this color prevails throughout. 
Top of the head slightly ascending; vertex projecting, horizontal, 
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