252 ACADEMY OF NATURAL SCIENCES 



and black, beneath pruinose; tergum black, the segments with 

 yellowish posterior margins. 



Inhabits Missouri. 



Head and thorax greenish-yellow, slightly varied with black : 

 scutel black, with the W and elevated x greenish-yellow : hem- 

 elytra with the nervures as far as the middle, green, beyond the 

 middle, brown : tergum black, the segments yellowish-brown on 

 their posterior margins ; all beneath testaceous, covered with a 

 mealy white. 



Length more than two inches and a quarter to the tip of the 

 hemelytra. 



DiflFers from the preceding by being larger, by having the ab- 

 dominal segments margined, and by being destitute of the white 

 spots on the tergum. The basal spine of the anterior thighs is 

 much more oblique than in the preceding species. This cannot 

 be the cosfalis, if the descriptions of that species are correct. 



3. C. DORSATA. — Scutel varied with blackish, greenish-yellow 

 and white ; tergum black, a dorsal and lateral line of white spots. 



Inhabits Missouri. 



Head and thorax varied with greenish-yellow and black : scutel 

 blackish-chestnut, the W and x marks greenish-yellow, lateral 

 lines of the W white near the thorax, a white line from the 

 humerus is interrupped by the anterior lines of the x, and also 

 in the middle between these two lines, a white [332] spot be- 

 tween the two lateral lines of the x : tergum black, a dorsal line 

 of white spots and a marginal line of white spots which are con- 

 tinued over the terminal segment, the lateral spot of the first and 

 second segments is very much dilated and confluent, that of the 

 third segment is much elongated and attenuated towards the 

 back, a white oblique spot on the first segment each side of the 

 dorsal line ; all these white marks are pruinose. 



Length two inches to the tip of the hemelytra. 



Found in the prairie near the Konza village, in which vicinity 

 it is rather common. Its note is harsher than that of our ^rwi- 

 nosa, and is generally uttered when the animal rises in flight, 

 alarmed on the approach of the traveller. 



4. C. AURiFERA. — Body covered with short golden pubescence; 

 beneath hairy. 



Inhabits Missouri. 



[Vol. IV, 



