232 FAAIILY VI.— LOCUSTID^. 



Ovipositor long and slender, lanceolate, a little curved up- 

 wards and extending about one-fourth of an inch beyond 

 the closed tegmina. General color bright grass green, rarely 

 a yellowish-brown or tan, with narrow yellowish lines along 

 the lateral carinre of the pronotum. Posterior tibiae with 

 all the feet more or less infuscated. 



Measurements. — Male: Length of body, 28 mm.; of 

 tegmina, 37 mm.; of pronotum, 8 mm.; of cone of vertex, 

 3.5 mm.; of posterior femora, 21 mm. Female: Length of 

 body, 33 mm.; of tegmina, 42 mm.; of posterior femora, 23 

 mm.; of ovipositor, 29 mm. 



This insect occurs in the same localities as ensiger, and 

 resembles it very closely. It tries to escape by burrowing 

 beneath the dead grass. 



Conocephalus rohustus Scudder. 



A much larger insect, with broader tegmina. Cone of 

 the vertex like that of ensiger, but with apex more obtuse; 

 the frontal basal spine blunt and distinct. Posterior femora 

 armed beneath on both carina with a number of weak 

 spines. Wings of male equalling the tegmina in length, in 

 the female a little shorter. Ovipositor shorter than in either 

 of the above species. General color either pea-green or dirty 

 brown, or a mixture of both. The cone rarely with a black 

 spot at apex, its sides often with a narrow yellowish line. 



Measurements. — Male: Length of body, 30 mm.; of 

 tegmina, 44 mm. ; of hind femora, 23 mm. ; of pronotum, 8 

 mm.; of cone, 2 mm. Female: Length of body, 31 mm.; 

 of tegmina, 48 mm. ; of hind femora, 26 mm.; of ovipositor, 

 26 mm. 



These large and ver}^ noisy insects are found occasionally 

 during September near the shores of Lake Minnetonka and 

 White Bear Lake. But as they seem to inhabit trees the}' 

 are not readily captured. Besides their loud notes they pro- 

 duce a buzzing sound like the humming of a bee. 



