202 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Straight and in the same straight Hne with the lower margin of the 

 cheeks. The prosternum has a very low pyramidal spine. The meso- 

 sternal lobes are separated by a space longer than broad in both sexes, 

 and the metasternal lobes are contiguous behind. The tegmina and 

 wings are very long and narrow; they exceed the abdomen much or 

 little in length. The tegmina have the anal field forming a distinct 

 angle with the discoidal field and they are acutely pointed. The ovi- 

 positor is small and moderately exerted. The posterior femora are 

 unusually compressed and moderately wide on the basal portion. 

 Their apical angles are produced into two blunt spines. 



The posterior tibitie are furnished on the outside with about i 7 mod- 

 erate spines and they have the apical spurs on the outside not very un- 

 equal to those on the inside. The supra-anal plate of the male is much 

 shorter than the last ventral segment, which is acutely tapering and 

 sharpest at the apex. 



Achurum, vSauss. , 1861. Orth. Nov. Am. IT, 15. 



Achuriim, Still., 1873. Recen. Orth., I, 89. 



Achurum, Brunner, 1893. Rev. Sys. Orth., 118. 



This is a North American genus represented by only two species. 



Key to Achurujm, Sauss. 



A.' Tegmina much exceeding the abdomen ; pronotum alutaceo-ru- 

 gose I • — Suwichrasti, Sauss. 



A. 2 Tegmina not exceeding the abdomen; pronotum not alutaceo-ru- 

 gose, vertex of the head, disk of the pronotum, and anal area of 

 the tegmina green 2. — Acridodcs, Stal. 



I. ACHURUM SUMICHRASTI, SaUSS. Fig. 2a, 2b, 2C. 



Truxalis {Achurum) sumichrasti, Sauss., 1861. Orth. Nov. Am., 



11, 15- 



Truxalis {Achuriwi) sumichrasti , Thos., 1873. Syn. Acrid. N. Am., 



195- 



Achurum sumichrasti, Walk., 1870. Cat. Derm. Salt., Ill, 518. 



Achunan sumichrasti, Stal., 1873. Recen. Orth., I, loi. 



Hab. This species is said by Saussure to belong to the temperate 

 regions of Mexico. The National Museum contains specimens from 

 Fort Grant, Arizona. 



2. Achurum acridodes, Stal. 



Truxalis acridodes, Stal., 1873. O^^- ^^^t. Akad. Forh. , 30:4, p. 52. 



