115 



Measurements: Male— Length of body, 26 mm.; of tegmina, 42 mm.; 

 of posterior femora, 21 mm. Female— Length of body, 28 mm.; of teg- 

 mina 47 mm.; of posterior femora, 23 mm.; of cone of vertex 3.25 mm.; of 

 pronotum, 7.5 mm.; of ovipositor, 31 mm. 



This is probably the most widely distributed species occurring in the 

 Eastern United states, having been recorded from Maine to Nebraska. It 

 is the most common one occurring in Northern Indiana, where it frequents 

 the tall rank grasses along ditches and the borders of damp prairies. In 

 Vigo and Putnam counties it is scarce, being replaced by C. nebrascensis, 

 Brunei'. 



The female has been recorded as depositing her eggs between the stem 

 and root leaves of Andropogon, a genus of tall, coarse grasses which grow 

 in dry, sandy localities. The young, hatched in May, reach maturity 

 about the 5th of August. Mr. Scudder, who has set the note of the male to 

 music, says of the song: " This insect has but a single song and stridu- 

 lates 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 b r w, then pauses an instant and immediately emits a rapid 

 succession of sounds like c h w i 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-ih,' as if sharpening a saw, enlivening low bushes, and 

 particularly the corn patch, as it seems to especially delight in perching 

 near the top of a cornstalk and there giving forth its rather impulsive 

 song." 



bb. Cone of the vertex entirely black beneath ; posterior femora armed 

 on both of the lower carina' with a number of plainly visible 

 spines. 



11. CoNOCEPHALUS NEBRASCENSIS, BrUIier. 



Conoceplialus nebrascemis, Bruner, Canadian Ent., XXIII. , 1891, 72. 

 McNeill, Psyche, VI., 1891, 23. - 

 Osborne, Proc. la. Acad. Sci., I., 1892, 119. 

 Scudder, Rep. Ent. Soc. Ont.. XXIII., 1892, 72. 

 A heavier bodied and shorter winged species than the preceding. The 

 cone of the vertex projecting upward more strongly and with the apical 

 half more tapering than in ensiger ; the basal tooth quite prominent. " Anal 

 cerci of male stout, with strong internal hooks. Ovipositor long and slen- 

 der, lanceolate, a little curved upwards and extending about one-fourth 

 of an inch beyond the closed tegmina." 



