366 REPORT OF STATE GEOLOGIST. 



The female of cnsigcr has been recorded as depositing her eggs 

 between the stem and the root leaves of Andropogon, a genus of tall, 

 coarse grasses which grow in dry, sandy localities. The young, 

 hatched in May, reach maturity in central Indiana about July 20th. 

 Mr. Scudder, who has set the note of the male to music, says of the 

 song: "This insect has but a single song and stridulates only by 

 night, or during cloudy weather. It begins its song as soon as the 

 sky is obscured or the sun is near the horizon. It commences with a 

 note like bt^w, then pauses an instant and immediately emits a rapid 

 succession of sounds like chwi at the rate of about five per second, 

 and continues them for an unlimited time. Another writer likens 

 its note to the syllable 'ik-ik-ik,^ as if sharpening a saw, enlivening 

 the low bushes, and particularly the cornpatch, as it seems to es- 

 pecially delight in perching near the top of a cornstalk and there 

 giving forth its rather impulsive song." 



90. OONOCEPHALUS NEBRASCENSis Bruner. The Nebraska Cone-head. 



Conocephalux nebrascensi'^ BmneT, 25, XXLII, 1891, 72; Scudder, 168, 

 XXin, 1892, 72; Id., 188, 1900, 72; BL, 7, 1893, 116; Lugg., 

 84, 1898, 281. 



This is a heavier bodied and shorter winged species than the pre- 

 ceding. The cone of the vertex projects upward more strongly and 

 has the apical half more tapering than in ensiger; the basal tooth is 

 also more prominent. The anal cerci of male are stout, with strong 

 internal hooks. Ovipositor long and slender, lanceolate, a little 

 curved upward and extending about one-fourth of an inch beyond 

 the closed tegmina. 



General color either bright grass green or a yellowish bro^vn or tan 

 with narrow, yellowish lines along the lateral caringe of the pro- 

 notum. Posterior tibiae together with all the feet more or less in- 

 fuscated. 



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. Females — Length of body, 33 mm.; of tegmina, 42 

 mm.; of posterior femora, 23 mm.; of ovipositor, 29 mm. 



The above measurements are very nearly the same as those given 

 by Mr. Bruner in the original description of the species, and are the 

 average of a half dozen specimens in my collection. I have one fe- 

 male, however, which is so much larger that at first I was inclined to 

 think it a different species, but the color and structure, except the 

 measurements, agree in every particular with those given above of 

 nebrascensis. The following are the measurements of the specimen 



