414 October, 



corners, especially the anterior ones, rounded off ; the edge of the frons, as seen from 

 the side, is convex. The antenna are filiform. The pronotum has a transverse 

 furrow about the middle dividing the median longitudinal ridge, and there are three 

 ridges, a median (fig. 3, m c), and two lateral ones (I c), the latter being more or 

 less curved in the different species. The elytra are generally perfectly developed, 

 though sometimes abbreviated (St. parallelus, Zett.), the mediastinal area extends 

 moi'e or less outwards, and is sometimes dilated at the base and sometimes includes 

 an adventitious vein ; the scapular area has oblique parallel transverse veins. There 

 are three radial and two ulnar veins (fig. 5), the latter being sometimes coalescent 

 (St. lineatus, Panz.). The dividing vein is straight. The wings are generally per- 

 fectly developed. The posterior tibiae are generally testaceous, sometimes reddish. 

 The first abdominal segment has a closed tympanum (external auditory organ). 

 Supra-anal plate (fig. 4, sap) in $ triangular. Subgenital lamina S curved upwards, 

 more or less sharp. The valves of the ovipositor are four, they are short, are always 

 extruded, and sometimes have an external lateral tooth at the base. The $ is con- 

 siderably larger than the <? . 



Table of Species. 



1 (2) Valves of the ovipositor with an external basal tooth ; discoidal area with 



regular reticulation 1. lineatus, Panz. 



2 (1) Valves of the ovipositor plain ; discoidal area irregularly reticulated. 



3 (6) Mediastinal area narrow, not dilated at the base ; extending far beyond 



the middle of the elytra. 



4 (5) Elytra never spotted, palpi unicolorous 2. viridulus, Linne. 



5 (4) Elytra generally spotted, palpi white at apex 3. rufipes, Zett. 



6 (3) Mediastinal area shorter ; dilated at the base. 



7 (8) Lateral ridges of the pronotum sharply angled anterior to the cross furrow, 



diverging considerably beyond it 4. i icolor, Charp. 



8 (7) Lateral ridges of the pronotum very slightly curved or nearly straight. 



9 (10) Elytra and wings perfectly developed 5. elegans, Charp. 



10 (9) Elytra fully developed in S , abbreviated in $ ; wings abbreviated in both 

 sexes 6. parallelus, Zett. 



1. — •Stenobotheus lineatus, Panz. 



Gryllus lineatus, Panz., Faun. Ins. Germ., fasc. xxxiii, tab. 9. 

 Locusta lineata, Steph., Mandib., vi, p. 26. 



Stenobothrus lineatus, Fischer, Orth. Europ., p. 325, tab. xvii, figs. 1, la ; 

 Brunner, Prod, der Eur. Ortb., p. 104. 

 Head large ; foveolee of the vertex not much depressed, antennae longer in the 

 $ than in $ , filiform, testaceous. Vertex sometimes bordered with a rosy streak. 

 Pronotum with the lateral ridges slightly angled about midway between the cross 

 furrows and the anterior margin, together with the head generally greenish, lateral 

 furrows pale, sometimes bordered internally with rosy, and crossed from without 

 inwards by a longitudinal black streak. Elytra hyaline, green at the posterior third, 

 apices smoky ; mediastinal area extending along about two-thirds of their length, 

 undilated ; scapular area occupied by a whitish streak in $ ; middle radial vein 

 bent upwards towards the apex, forming a broad posterior radial area. Anterior 



