88 Annals Entomological Society of America [Vol. XIII, 



of round black spots on the pronotum back of the eyes and 

 another pair on the hinges. Males varying from entirely 

 shining black to partly black, with milky subhyaline elytra, the 

 black abdominal markings showing through, or in extreme 

 cases entirely pale green, like the females. The female segment 

 is nearly truncate and the male plates are broad and short. 



This species is fairly common from Massachusetts to New 

 York and Georgia, west to Minnesota, Iowa and Kansas and 

 almost to the Rocky Mountains in Colorado. It is never 

 found in trees or in shrub-covered areas. It is so heavy 

 bodied that it does not fly readily. The writer has frequently 

 found both sexes, together with the green larvas in areas of 

 prairie grasses. As there is no other species in this region 

 closely related to this, there can be no question about the 

 relation of the five color varieties of males. Osborn and Ball 

 pointed this out in '97, but both Van Duzee and Gibson have 

 ignored it. 



Spangberg described the species from males from New 

 Jersey and Georgia. Either he did not have the female or else 

 confused it with some other species. Woodworth, ignorant 

 of Spangberg's work, described each sex separately. The 

 writer has examined the examples in the Illinois collection and 

 found the above synonym to be correct. Gibson, not recog- 

 nizing the relation between the sexes, identified the females 

 without black spots as unicolor, those with spots as bimaculata 

 Spgb. and the dark males as melanota. The true bimaculata 

 Spgb is, however, evidently the female of the next species 

 and not of this one, and while the real status of unicolor is 

 somewhat doubtful, it cannot apply to this species. 



3. G3rpona verticalis Stal. 



Gypona mexicana Spangb.: Gypo?ia bimaculata Spangb.; Gypona unicolor var. nigro- 

 dorsalis Spangb.; Gypona nixabunda Gibs.: Gypona germari Stal. 



Smaller and much narrower than melanota, females resem- 

 bling rugosa. Golden green or yellowish. The females and 

 light males agree in having round black spots on pronotum and 

 black marks on hinge. The males vary from golden green to 

 smoky or shining black, with about five varieties as in melanota. 



This Rocky Mountain species may be readily separated 

 from its eastern relative by the much narrower and nearly 

 parallel margined appearance, by the golden shade on all but 



