OKTHOPTEEA OF i:^DIANA. 429 



All the femora of female and the fore and middle pair of male fus- 

 cous, sometimes with a few lighter dots on their upper surface; the 

 hind femora of male hlackish on outer face, the dark color passing 

 oiver the upper side and half way down the inner face where it is 

 broken, thus forming bars or blotches plainly visible on the lighter 

 color. The tibiae usually reddish brown, more or less mottled with 

 fuscous. The basal joint of front tarsus whitish in the female. Ovi- 

 positor but little more than half as long as the hind femora, dark 

 brown in color, its apical third wider and a little upturned; the armed 

 portion longer than in any other Indiana species; the teeth fine, 

 sharp, and more than usually distant one from another. 



Measurements: Length of body, male, 7.2 mm., female, 7.5 mm.; 

 of tegmina, male, 4 mm., female, 3 mm.; of hind femora, male and 

 female, 6 mm.; of ovipositor, 3.3 mm. 



This is a larger and broader insect than N. palustris. The main 

 differences between the two species are set out in the key. The 

 armed portion of the ovipositor is wider and longer and the teeth 

 more distant and sharper in confusus than in palustris. 



N. confusus has been taken in Kosciusko and Posey counties. In 

 the former it was found on August 26, 1902, to be quite common in 

 some low, damp woods bordering Tippecanoe Lake. Here it had its 

 home among the fallen leaves and beneath small chunks and chips. 

 From Posey County a single specimen was secured also from a tract 

 of low woods. 



It seems that the different species of this genus noted above have 

 each a special abiding place. Fasciaius and exiguus are the only ones 

 which may be looked for anywhere in open fields and along road- 

 ways. Maculatus occurs in open woods in dry situations; culensis in 

 sandy districts; carolinus along the banks of streams and on gravelly 

 hillsides; palustris nowhere except among the sphagnum mosses of 

 dense swamps and bogs, while eonfusus likes best the shadows of 

 dense woods which are low and moist. Each species has, therefore, 

 its special habitat where the food on which it thrives is most abun- 

 dant, and where, during the ages past, it has become so modified in 

 organ and hue as to receive from man a distinctive specific name. 



LVI. Grtllus Linnseus (1758). 



To this genus belong those dark colored thick-bodied insects 

 known as house and field crickets. The latter are the best known 

 examples of the family Gryllidae and are abundant from June 1st till 

 after heavy frosts, beneath logs, boards, stones, and especially be- 



