REHX AXD HEBARD 



IG- 



sHctomerus 



aigialus 



nigropleurum 



attenuatus 



Tegmina 



Brachyp- 

 Macropterous terous 



cf 18.3-18.4 8-11.6 



Ovipositor 



Spines of ventro- 

 external margins 

 of caudal femora 



9 18.3-18.8 

 cf 16-17.7 



9 18.1-19.7 

 c^ 



9 16-18.6 

 cf 18.1 



9 19.4-20.9 



very weakly sig- normally 3 and 4. 



moid, broader, extremes to 7. 

 6.9-9.8 13.7-19.8 

 6 . 8-9 . 6 straight to normally 4 and 5. 



weakly sigmoid, 



extremes 1 to 7. 



broader. 

 7.1-10.6 10.6-13.7 

 5.7-9.4 straight, 



broader. 

 6.6-9.3 13.4-18.7 ' 

 10.1-10.6 very weakly 



curved. 

 8.7-10.6 19.9-27.8 



normally 3 and 3. 

 extremes to 6. 



normalh^2 and 2. 

 extremes to 5. 



nigropleuroides cf 5 . 7-8 . 7 



weakly sigmoid considerabty 

 or distinctlv over half 0. 



spartinae 



saltans 



9 15.5-17.8 

 d' 15.3-18.2 



9 16.2-18.9 

 cf 14.3-17.1 



9 16.2-20.3 



5.3-8.2 cm-ved. 



5 . 9-9 . 3 verj- weakly 



curved. 

 5.2-9.3 7.1-9.9 

 3 . 1-6 . 3 very weakly 



curved to nearly 



straight. 

 1.6-3.8 9.7-16.4 



extremes to 2. 

 normally 1 and 2. 

 extremes to 5. 



In the species marked with an asterisk greater extremes doubt- 

 less exist, as adequate material for such determination is not as 

 yet contained in collections. The macropterous forms have 

 the wings decidedly surpassing the tegmina, the brachj^pterous 

 forms have the tegmina as long as, or longer, than the wings. 

 Such macropterism and brachypterism is found in twelve of 

 the seventeen species here considered. No such brachyptorous 

 form is developed in fasciatus vicinus; a semi-brachypterous 

 form ])cing the normal condition in this race, and macropterism 

 appearing in the southernmost portions of its distribution. Three 

 species — not including the above mentioned geographic race of 

 one of these — show only a macropterous condition, while two 

 species are known from only l)rachyptcrous material. So little 

 material is known of one of the only macropterous and both of 

 the only brachypterous species, that both conditions will very 

 probably be found in one or possibly all of these species when 

 larger series have been gathered. Of the twelve species showing 



TRANS. AM. ENT. SOC, XLI. 



