HANCOCK S9 



(Hancock); Cassopolis, Mich. (Hancock): St. Anthony Park, 

 Minn. (Lugger); Pulaski Co., 111. (Gaulti; Douglas Co., Kan- 

 sas (Kahl); Lawrence, Kansas (Kahl); Richmond, 111. (Han- 

 cock); Winnetka, 111. (Hancockj; DeGrassi Pt., Ont. (Walker); 

 Bloomington, 111. (C. C. Adams and M. J. Elrod). 



Tettix angustus, Hanc, is a variety- which merges into 

 arowsus on the one side and obscnrus on the other. It was 

 described from Illinois. 



TETTIX GIBBOSUS, H.\NC. 



Plate v., Figs. 3-5a. 

 Plate III., Fig. 6. 



Allied io obscnrus ; exceedingly variable; body moderately 

 robust, somewhat flattened, rugose, granulate; vertex similar 

 excepting that the median carina viewed from above projects 

 a little more from the middle of the front border and more 

 appreciably sulcate on either side. In profile the facial costa is 

 advanced before the eyes and strongly sinuate opposite the 

 lower portion of the eyes, between the antennae distinctly 

 protuberant, viewed in front the rami quite widely separated. 

 Pronotum truncate anteriorly, strongly constricted before the 

 shoulders, in profile forming a small arcuate-gibbose eleva- 

 tion; the dorsum immediately behind the gibbosity between 

 the shoulder more or less distinctly depresso-sinuate, posteri- 

 orly the dorsum between the carinae flattened, rugose, the 

 median carina indistinctly sinuate, nearly horizonal; dorsum 

 between the shoulders quite broad, humeral angles distinct, 

 carinate, projecting laterally over the elytra, posteriorly the 

 horizontal process more or less abbreviated, the extreme apex 

 more often straight but sometimes curved downwards, fre- 

 quently passing the wings or not extended quite as far; 

 scapular area quite high posteriorly. 



Length body, 5, 11 mm.; pronot., 10 mm.; post, fem., 

 5.1-5.8 mm.; ^, body 7.5-10 mm.; pronot., 7-10 mm.; post, 

 fem., 5-5.5 mm. 



Locality, Riverside, Winnetka, Richmond, in Illinois 

 (Hancock); Pulaski Co., 111. (Gault); Ames, la. (Ball); Vigo 



