SUBFAMILY IV. COXOCEPHALIN^E. 577 



vergent, greatest width one-half that of basal antennal joint. Lateral lobes 

 with front margin broadly rounded into the lower one, the angle between 

 them very obtuse, scarcely evident; lower hind angle narrowly rounded, 

 humeral sinus obsolete. Tegmina usually abbreviated, covering four-fifths 

 of abdomen, male, two-thirds, female, their tips narrowly rounded; rarely 

 macropterous, then exceeding hind femora 1.5 mm., surpassed by wings 

 3.5 mm. Hind femora armed beneath on outer margin with one to five 

 spines. Cerci as in key and Fig. 188, m. Length of body, $ , 14 17, 9 , 

 1516; of pronotum, $, 33.5, $, 3.23.6; of tegmina, $, 89, 9, 8 

 8.5, 9, long-winged, 1719; of hind femora, $, 1314, 9, 13.515; of 

 ovipositor, 16 17.5. mm. 



This, one of the most handsome of North American Orthoptera, 

 occurs in suitable localities throughout Indiana, but is nowhere 

 very common. It is a hydrophilous species, inhabiting only the 

 margins of streams, ditches, large ponds and lakes, where it 

 abides in the tall, rank grasses and sedges growing in the shade. 

 It reaches the perfect stage about July 1st in southern Indiana, 

 and in Fulton County has been taken as late as October 24th. 

 The males leap actively when approached. The females are more 

 clumsy and usually dive headlong into a bunch of fallen grass. 

 They can then be most readily captured by clasping the hand 

 about a bunch of grass stems or branches of shrubs, on the under 

 side of which the insects have taken refuge. The long-winged form 

 is very rare but a single female from Wells County being in the 

 collection at hand. About Lafayette, Fox (1915, 33) found nigrop- 

 Iciirus frequent in herbaceous thickets, especially those forming 

 the margins of bogs dominated by the rice cut-grass, Honnilo- 

 ccnclirus oryzoidcs (L.), in both open and woodland situations 

 and usually associated with Orcheliniiini nigrifics Scudd." 



The known range of mgroi>lciiriiK is somewhat limited, extend 

 ing from Ithaca, N. Y., and southwestern Ontario west to Wis- 

 consin and Nebraska, and south, so far as recorded, only to the 

 Ohio River in Indiana. Bruner's types were from eastern Ne- 

 braska, and of its habits in that State he wrote: ''This beautiful 

 insect, which is our most active species of the genus, is quite plen- 

 tiful among the rank vegetation on low moist ground, and is 

 especially common in wet places where the 'cut grass 1 (Lccrsla 

 oryzo'ules Swartz) grows. The supposition is that this grass of- 

 fers a better place than usual for the deposition of its eggs, which 

 are deposited between Hie leaves and stems of grass. Grapevines 

 and other creeping plants which form matted clusters that afford 

 shelter from the noonday sun and the bright light of day are fa- 

 vorite haunts of this and other species of our nocturnal grass- 

 hoppers and a few of the arboreal crickets. It occurs throughout 



