364 EEPOHT 01" STATE GEOLOGIST. 



Of the habits of the species found in Illinois, McNeill has written: 

 "All the species of Conurephahis seem to possess more intelligence 

 than is usual anioncr the Orthoptera, and tliey are about the most 

 difficult of the order to a^iproach. In escaping they usually slip or 

 fall into the grass instead of jumping or flying; but they seem to 

 fully understand tliat they are >ery well protected by their color and 

 form. If approached very cautiously they often remain quite still 

 upon the stem of grass upon which you have surprised them with 

 the usually well founded expectation tliat you will not be able to 

 distinguish them from the green herbage around. If they think it 

 worth while to make some active movement to escape they will fre- 

 quently slip around on the other side of the stem and walk down the 

 stem to the ground or off upon another plant. Vnlike most Orthop- 

 tera they do not use their front legs in holding to the mouth the 

 thing upon which they feed. Instead of biting they seem to wrench 

 or tear away pieces from the stems or leaves."* 



The genus is a large one, 101 species being included by Eedten- 

 bacher in his monograph. Only sixteen, however, are listed by Scud- 

 der as occurring in the United States, and but five have, up to the 

 present, been taken in Indiana. These may be distinguished by tho 

 following table: 



KKY TO INDIANA SPECIES OF CONOCEPIIALXTS. 



a. Cone of yertex slender, extending 3 mm. or more in front of eyes, 

 and with either the margin or lower face black. 

 b. Each margin of cone with a black line extending from the 

 apex half way or more to base; inner, lower carina of pos- 

 terior femora with four or five minute spines 



8'.t cnsiiicr. p. 3Gr> 



bb. Lower face of cone wholly black from apex to inferior basal 



tooth; posterior femora armed on both the lower carin;e with 



a number of plainly visible spines. 



r. Length of body of female less than 30 mm.; of cone of 



vertex not over 4.5 mm 00 nebrascensis, p. 366 



CO. T^ength of liody of female more than 45 mm.; of cone of 



vertex more than 7 mm 91 bnineri. p. 367 



tia. Cone of vei-tex rather stout, extending less than 3 mm. in front of 

 eyes, devoid of black markings. 



«7. Lateral c;iriii;e of pronotum with a yellow line; wing covers 

 with irregularly distributed black dots; ovipositor exceeding 



25 mm. in le^ngth f>2 robustus. p. 368 



<7(7. Lateral carina? of pronotum without trace of yellow; wing cov- 

 ers a bright grass green, immaculate; ovipositor less than 20 

 mm. in length 03 paliistris, p. .36ft 



=•■■ Psyche. VI, 23. 



