314 PROCEEDINGS OF THE ACADEMY OF [J line, 



latter is a very distinct feature, but otherwise the general form of the 

 cercus is much the same in all the seven males. 



The Florida females present very puzzling degrees of variation in the 

 curve of the ovipositor. When compared with two Indiana females 

 of true nigropleurum the ovipositor is seen to be slightly deeper in all 

 the Florida specimens, straight as in the Indiana individuals in one 

 Florida representative, very slightly curved dorsad at the apex in 

 three and gently but appreciably curved in the remaining five. These 

 types seem to shade one into the other, although the individuals with 

 the ovipositor curved average somewhat larger, one, however, being 

 no larger than in the opposite category. The tegmina vary from 

 half the abdominal length to equal length, the latter seen only in one 

 specimen. The variation in the ovipositor is irrespective of locality, 

 both extremes having been taken at Cedar Keys. Until more evidence 

 is in hand to prove the two extremes distinct, we are under the necessity 

 of considering them purely variations within specific limits, and the 

 same is true with the differences noted between the typical nigropleu- 

 rum and the Florida forms or variants. 



At Gainesville this species was taken in pine woods, and at Cedar 

 Keys in salt marsh grass, where specimens were extremely abundant 

 and although very active easily taken with the net. 



The range of this species is here carried south from the Ohio Valley 

 and New York State. 

 Odontoxiphidium apterum Morse. 



A series of 101 specimens represents this very distinct genus and 

 species, taken at the following localities: Pablo Beach, August 11, 12 

 and 13, thirty-five males, thirty-seven females; San Pablo, August 

 13, one male; Gainesville, August 16, twelve males, twelve females; 

 Cedar Keys, August 15, three males, one female. Several specimens 

 from each locality except San Pablo are immature, in some cases 

 apparently two stages before the mature condition. 



In size there is considerable variation, as previously evidenced ]jy 

 the measurements in the original description, while the color variations 

 are almost wholly in the intensity of the median dark bar and in the 

 extent of pale brown suffusion on the limbs. 



A variety of environments are frequented by this species, ranging 

 from dry palmetto scrub and undergrowth in pine woods to grass- 

 land, tall fresh marsh grass and salt marsh. The species was found 

 most plentiful in the low parts of the open palmetto scrub at Pablo 

 Beach. The insects were noticed to prefer the damp locations, 

 but none were found in true marshlands. At Gainesville, also, 



