SCUDDER. THE GENUS SCHISTOCERCA. 447 



c2. Markings of distal half of tegmina composed of fuscous maculations, 

 generally feeble, arranged in obliquely transverse series at right angles 

 to the veins (much as in S. americnna), the transverse cross veins at such 



points infuscated equally throughout 42. cancellata. 



d-. Tegmina distinctly pantherine in markings, the costal area maculate. 



43. americana. 

 (?. Of small size. Pronotum distinctly and strongly tectate, the median stripe 

 narrow, the posterior margin rectangulate or even acutangulate, at least in the 

 male ; tegmina immaculate or very feebly maculate ; male cerci of subequal 

 breadth 44. damnijica. 



1. Schistocerca gracilis sp. nov. ; 



One of the smallest and slenderest of the genus, fusco-testaceons, ob- 

 scurely marked with fuscous. Head fusco-testaceous ; frontal costa sub- 

 equal, a little expanded basally, strongly sulcate excepting above, coarsely 

 punctate, the margins flavo-testaceous ; eyes much longer than the gente 

 below them ; antennjB fulvo-testaceous. Pronotum compressed, subequal, 

 hardly expanding on the metazona, where the width does not exceed that 

 at eyes, fusco-testaceous with a ferruginous tinge, the metazona somewhat 

 infuscated on the disk, the lateral lobes immaculate but a little pallescent 

 centrally ; pi-ozona not tectate, of the same length as the metazona, ante- 

 riorly produced and well rounded, rather delicately scabrous, the median 

 carina slight but distinct and slender, more pronounced on the metazona, 

 which is delicately scabro-punctate, the posterior angle rectangulate, 

 hardly rounded, Prosternal spine rather slender, rather short, equal, 

 blunt, a little retrorse. Tegmina slender, much longer than the body, 

 fusco-testaceous sprinkled, especially in the distal half, with slight and 

 not very dark fuscous maculations, rather irregularly scattered throughout ; 

 wings apparently vitreous.* Fore and middle femora slender ; hind femora 

 rather small, but little surpassing the abdomen, fusco-ferruginous, with a 

 somewhat hoary outer face, the upper carinas scarcely serrate ; hind tibiae 

 ferruginous, the spines black tipped. Anal cerci fully twice as long as basal 

 breadth, tapering slightly, bent a little inward at the middle, the apex 

 truncate and feebly emarginate, the angles rounded ; subgenital plate a 

 little upcurved, scaphiform, but tapering regularly as seen from above and 

 compressed, apically acuminate and fissate half way to the base, the angles 

 acute. 



* The specimen is in too fragile condition to be spread. 



