NO. 2176. NOTES ON VIRGINIA ORTHOPTERA—FOX. 209 



April 24; Center Cross, August 18 (njmiphs); Sharps, May 5-18, 

 June 22; Ottoman, September 27 (nymphs); Irvington, September 

 26 (nymphs). 



Bells Cross Roads, October 26 (nymphs) ; Charlottesville, Decem- 

 ber 5, 1913 (nymphs), March 23 to April 17 (nymphs), April 19-26 

 (adult males, nymphs), May 1 (adult male, female, and nymphs). 

 May 9 to June 25, Jmie 27-28 (adults and recently hatched yomig), 

 July 3 to November 26, 1914 (nymphs), February 21 to April 4 

 (nymphs), April 6-8 (adult male, nymphs), October 27 to November 

 20, 1915 (nymphs). 



BeUs VaUey, April 15, 1915 (1 juv.). 



Frequent in old, neglected fields and pastures, especially those over 

 run with Andropogon and other coarse grasses, m the Piedmont region 

 and part of the Coastal Plain , but not yet taken in the southeastern 

 portion of the State. Nothmg definite can be said regardmg its west- 

 ward range in the State since collections from the Appalachian region 

 are lacldng for the season when the species is most common, except 

 for the single immature example taken in Bells Valley as noted above. 



In Virginia this species occurs in two forms. One of these, repre- 

 senting the typical race, is characterized by the possession of a pair 

 of supplementary carmae on the disk of the pronotum between the 

 median and lateral carinae, and by the presence of a pair of longitudi- 

 nal black lines bordering the lateral carinae on their inner sides. The 

 other or atypical race (see Rehn and Hebard, Proc. Acad. Nat. Sci., 

 Phila., vol. 62, 1911, pp. 626-627) lacks both of these features, but 

 has instead a miicolorous pronotal disk and a broad bar of brown on 

 the sides of the pronotum below the lateral carinae. Both forms are 

 frequent at Charlottesville and in the Rappahannock River valley, 

 the typical form bemg the more abundant, though the atypical form 

 is by no means scarce. Both have the same habitat preferences and 

 hfe histories, and are almost invariably associated with each other. 

 Although typical examples of both races are common, the writer has 

 never fomid any individuals bridging the gap between them. If 

 such intergradations exist they are apparently very exceptional. 



AMBLYTROPIDIA OCCIDENTALIS (Saussure). 



Deanes, September 26, 1 male, 1 juv,; Gilmerton, November 7, 1 

 female. 



Known only from the extreme southeastern portion of the State, 

 where it appears to be very scarce. Those taken by the writer were 

 found in the low grassy undergrowth of open woodlands of oak, 

 loblolly pine, and sweet gum. 



65008°— Proc. N.M. vol.52— 17 14 



