SUBFAMILY TETTIGINAE 9 
groups of this subfamily represented in Minnesota and these may be 
separated as follows: 
Anterior femora more or less compressed, carinate above; antennae with 12 to 
14 joints Tettigiae 
Anterior femora distinctly and broadly sulcate above; antennae with 16 to 22 
joints Batrachideae 
TETTIGIAE 
The Tettigiae are represented within our borders by three genera 
which may be distinguished by the following characters: 
Median carina of pronotum cristiform; antennae with 12 (rarely 13) joints 
Nomotettix 
Median carina of pronotum low; antennae with 14 (or less) joints 
Vertex advanced beyond the eyes and wider than one of them; generally 
angulate anteriorly Tettix 
Vertex not advanced beyond the eyes; generally truncate anteriorly; body 
broad between the shoulders ’ Paratettix 
NOMOTETTIX Morse 
Body scabrous, granulate, or rugose; vertex of head extending 
beyond the eyes and wider than one of them, its front angulate or 
rounded but not truncate. Pronotum with its median carina raised and 
cristiform, more or less arched longitudinally, the front margin pro- 
duced in an angle projecting over the back of the head. Superior 
sinus on posterior margin of lateral lobes of the pronotum shallow, 
being only about one half as deep as the lower. Between the posterior 
portion of the eyes and the median carina of the pronotum, a pair of 
nipple-like tubercles are usually present. The antennae are normally 
short and filiform with 12 or rarely 13 joints. In this genus the ab- 
breviate form with the pronotum extending only to the tip of the 
abdomen, is most common, although occasionally the long or extended 
form is taken. The genus is represented in the United States by a very 
few species, nearly all of which are rare and local. We have but one 
species which is unknown outside our limits. 
Nomotettix parvus Morse 
Nomotettix parvus is an interesting little insect which is readily 
distinguished from the members of the following genera by the arched 
and cristiform pronotum and by the considerably smaller size of the 
individuals. In general appearance it has much the aspect of immature 
Tettix. There is much variation in coloration, the general tint of the 
body varying from gray or brown to nearly black, while forms occur 
