230 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.. 52. 



ORCHELIMUM CONCINNUM Scudder.i 



PortsiuouUi, October 3; Churchland, August 8-9, November 4; 

 Cape Henry, September 20; Tappahannock, July 24 to September 7; 

 Naylors, September 17; Sharps, October 13. 



Abundant in the Scirpus americanus fonnations of tidal marshes, 

 less common in the associated Spartina cynosuroides and occasionally 

 found in Spartina glabra (Sharps) , but not typical of the latter, which 

 it almost entirely avoids. At Tappahannock this species, although 

 abundant in early and middle August, became quite scarce by early 

 September, at which time it had been replaced as the dominant form 

 of the tidal marshes by agile; on the other hand, it was found in abun- 

 dance on the opposite side of the Rappahannock at Naylors as late as 

 September 17, but at this place agile was relatively scarce. Can it be 

 that these two species are competitors and that agile after its advent 

 gradually eliminates its rival ? 



ORCHELIMUM FIDICINHTM Rehn and Hebard. 



Portsmouth, October 3 (1 female) ; Millenbeck, August 8, September 

 27 ; Whitestone, September 26. 



Locally abundant in salt marshes, a characteristic denizen of the 

 true salt marsh grass, Spartina glabra. At Wliitestone this species 

 was very abundant. 



ORCHELIMUM SUPERBUM Rehn and Hebard. 



Tappahannock, July 27-28, 1915 (4 males). 



This recently described species was found on Scirpus americanus 

 in tidal marshes. Two of the specimens differ from the type in having 

 the outer genicular lobes of the caudal femora bispinose instead of 

 unispinose. 



CONOCEPHALUS - FASCIATIIS (De Geer). 



Churchland, August 8-9, September 15-16, November 4, 1914, 

 July 11, 1915; Norfolk, July 11; Deep Creek, October 1; Deanes, 

 September 26; Franklin, September 18, November 5; Tappahannock, 

 June 17 to October 24; Naylors, September 17; Sharps, June 22, 

 October 13; Ottoman, August 8, September 27; Millenbeck, Sep- 

 tember 27; Irvington, September 26. 



Fredericksburg, September 5; Charlottesville, June 15 to Septem- 

 ber 10. 



Jarman Gap, August 1. 



Monterey, August 16-31; Meadowdale, August 19; Trimble, Aug- 

 ust 15; Bolar, August 15. 



A highly adaptable species, occurring abundantly in a variety of 

 habitats in the Coastal Plain; more local and largely restricted to 



1 Called O. hnhaceum in my List of New Jersey Orthoptera, p. 527. 

 > = Genus Xiphidittm of most authors. 



