246 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



wings are well developed. The former has the mediastine vein very 

 short in the male, with the scapular area expanded so as to make the 

 anterior margin of the tegmina plainly arcuate near the middle. The 

 discoidal and ulnar areas are imperfectly or not at all closed. The 

 posterior femora are slender, with more or less distinct bands on the 

 upper face. The posterior tibiae have the apical spines on the inner 

 side much stronger than those on the outside. The valves of the ovi- 

 positor are strongly exerted, the lower ones being furnished with an 

 unusually strong lateral tooth. 



Of the new genera given by Brunner in his Revision du systeme des 

 Orthopteres, this is one of the itw that can be clearly determined. He 

 says in a foot-note that it is represented by four species in the United 

 States; with Stenobothrns occipitalis, Thos., as the type. In other 

 cases he simply states that the genus is founded upon one or more 

 species from a certain locality without either naming or describing ihe 

 species and with no description of the genus other than the 

 very brief one given in the key. It is impossible to determine from 

 these brief characterizations just what the genus is and to guess at these 

 would only make confusion in synonomy so that I have determined to 

 treat such genera as though they never had been made. I know of 

 but three species in the United States or North America that will be 

 included in this genus as I have limited it. 



Alpha, Brunner, 1893. Rev. Sys. Orth., 121. 



In part, Stenobothrns, Thos. Syn. Acrid., N. Am., 81. 



Ochrilidea? Bruner, 1889. Proc. U. S. Nat. Mus., XII, 52. 



Key to alpha, Bruner. 



A.'^ Median carina of the pronotum cut much behind the middle. 



Lateral carinae twice as widely separated at the posterior margin 



of the metazone as near the middle of the disk. 



B.^ Posterior tibiae red i. — Occipitalis, Thos. 



B.2 Posterior tibiae testaceous 2. — Cinerea, Bruner. 



A.^ Median carina of the pronotum cut very little behind the middle. 



Lateral carinae about twice as widely separated at the posterior 



margin of the metazone as at the middle of the disk 



3. — Cremdata, Bruner. 



I. Alpha occipitalis, Thos. Figs. i8a, i8b. 



Stenobothrns occipitalis, Thos., 1873. Syn. Acrid. N. Am., 81. 

 Stenobothrns occipitalis, Bruner, 1883. 3rd Rept. U. S. Ent. 

 Com., 55. 



