21 



Description of a Ne^w^ Genus and Species 

 of locustid^e. 



By J. G. O. Tepfer, F.L.S. 



[Rend June 7, 1889. J 



S^en. nov. 



Male (imago and nymph). — Body stout, short, somewhat com- 

 pressed laterally. 



Head rather small; vertex raised, somewhat glolDOse above, 

 and forming a short ridge between the antennjf, with abrupt 

 sides, a fine furrow lengthwise, and separated by transverse fur- 

 rows at either end. 



Eyes rather small, ^'ery prominent, ocelli not apparent. 



Palpi long, slender, joints cylindrical, last joint slightly 

 thickened towards extremity ; tips rounded. 



Antenna:^ extremely slender, setaceous, fully twice the length of 

 the body or more, tinely ciliated towards the tips ; base below 

 and inwards surrounded by a narrow ridge ; joints cylindrical, 

 very numerous; first joint very stout, a little longer than thick ; 

 second somewhat shorter and half as thick ; third again dimin- 

 ished in the same proportion ; the remainder nearly of the same 

 length and gradually tapering to the end. 



Thorax stout, narrow ; sides straight, flat. Prothorax with a 

 steep saddle-like depression near the front, continued along the 

 side in the form of two or three shallow closely adjoining fur- 

 rows; anterior part raised, hood-like, triangular, hollow in front, 

 and terminating in an acute point ; posterior pronotum about 

 four times longer, lateral edges indistinct, raised semi-globosely, 

 and terminating in a stout, oblique, conical spine on each side. 

 The middle dorsal shield extends somewhat beyond the base of 

 the forewings, where the lateral margins ascend obliquely at an 

 a,ngle of about 40°, meeting at a sharp point over the base of the 

 iibdomen. The middle of the pentagonal area is occupied by a 

 high lentil-shaped hollow crest, with a circular, notched margin in 

 front and above ; its surface is traversed by six distinct main 

 veins starting from the base near the front, which emit a few 

 longitudinal branches, and more numerous but less distinct 

 transverse veins. The sides descend very low, the rounded mar- 

 gins forming a narrow recurved ridge. The meso-and metatliorax 

 are much higher and stronger than the prothorax, the sides flat, 

 straight, and separated by deep furrows. The pro- and meso- 



