56 riKtCEEUlNGS OF THE SATIOSAL MlSEl M. vouxx. 



metastetliia together mucli longer tliaii broad; interspace between 

 niesosternal lobes generally twice as long as ]»road in the ujale, almost 

 equally narrow or snbqiiadrate in the female, the metasternal lobes 

 subattingent in both sexes. Tegmina and wings always present, gen- 

 erally fully develoi)ed or a little abbreviate, but sometimes lobate. 

 Fore and middle femora of male tumid; hind femora long and slender, 

 somewhat compressed, generally surpassing the abdomen, the superior 

 carina slight, unarmed; hind tibiae feebly ampliate apically, with 

 spines of similar length on the two sides; first joint of hind tarsi 

 scarcely longer than the third, the second small, with a large inferior 

 apical lobe; arolium rather large, nearly twice as long as broad. Sub- 

 genital i)late of nude furnished with a prominent, subapical, mine or 

 less conical tubercle, the lateral nuirgins of the plate suddenly ampliate 

 at base; furcula always distinctly present as a pair of projecting lobes; 

 last abdominal segment of female not abbreviate, the ovipositor nor- 

 mally exserted. 



The type is H. festivus Scudder, a species mistaken for //. viridin 

 Thomas at the time the genus was described. 



This genus is closely related to Hifpnchlora and (Unnpylncaniha^ but 

 is separated from them by the basal ami)liation of the margins of the 

 subgenital i)late of the male. One of the species indeed (the most 

 aberrant one) was originally placed by Brunner in Hi/poelilora. The 

 genus is still more closely allied to Aeoloplusj from which it is separable 

 by the form of the pronotum and the slenderness of the body. 



It is found across the United States, but only a single species is 

 known east of the Great Plains, and that one has only been found on 

 or near the Atlantic border. It is generally characteristic of the West. 



Many of the species are very closely allied and have hitherto been 

 confounded by all observers. A large amount of material now enables 

 nje to distinguish them and to find characters which will rarely fail of 

 tolerably certain separation. 



ANALYTICAL KEY TO THE SPECIES OF IIE8PEROTETTIX. 



A'. Metazona of pronotum distiuctly punctate on dorsum; prozona smooth, except 

 sometimes feebly punctate on dorsum ; nowhere rugulose. 



hK Pronotum highly and irregularly diversitied in color, or else nearly devoid of 



markings of any kind, the (lorsum nearly plane; tegmina in the diversified species 



marked with a white or pallid stripe on the division line between the discoidal 



und anal areas. 



c'. Transverse sulci of the pronotum distinctly marked in black; bind femora 



with a distinct pregenicular anuulation. v 



ff'. Relatively slender-bodied, with alender femora; tegmina rarely as short as 



the body and then only in male; anipnuae of male slender, distinctly longer 



than the head and pronotum together 1. riru/w (p. 57). 



(f^. Relatively stout-bodied, with stout femora; tegmina surpassing the body 

 only in the male and then but slightly ; antennae of male coarse, scarcely 



longer than the head and pronotum together 2. meridionaUs (p. 59). 



C'. Transverse sulci of pronotum not marked in strong colored contrast to sur- 

 roundings; hind femora without red pregenicular annulation or onlj- faint signs 

 ol one 3. J'estivus (p. 60). 



