352 Dr. J. L. Hancock's Third Paper on the 



the posterior margin above minutely crenulate barely undate ; the 

 posterior process lengthily extended backward beyond the hind 

 femora, a distance nearly equal to their length, the lateral margins 

 below convex, anterior process in front curvate, apex bidentate, sub- 

 obtnse, the inferior margin strongly oblique, substraight ; lateral 

 lobes posteriorly bisinuate. Elytra oblong ; wings fully explicate 

 freely exposed at the sides and ends, and more or less distinctly ex- 

 tended beyond the pronotal apex, and beyond the hind femora a 

 distance equal to their length. Femora subscabrous granulate, an- 

 terior femora foliaceous -dilate, superior carina serrulate, terminating 

 in a small denticle, ventral margin serrulate-sublobulate ; middle 

 femora above serrulate-sublobate, inferior carina ampliate backwards 

 toward the apex, serrate and incised bilobate ; posterior femora 

 externally scabrous, superior carina compresso-ampliate and serrate 

 backwards terminating acutely, superior surface before the knees 

 bearing two distinct fuscous spines, the inner one erect ; external 

 femoral carina thin, inconspicuous and minutely serrulate, the in- 

 ferior external armed with two obscure minute denticles ; ventral 

 carina crenulate and somewhat distinctly quinquelobate. Colour 

 greyish or greyish rufescent, the crest sometimes cinerous, subhya- 

 line, and rarely marked with fuscous along the margin. 



Length of pronotum, g 14 mm. ; posterior femora, 5.3 mm. 

 $ pronotum, 15.5 mm. ; posterior femora, 6 mm. 



Seven examples ; three males and four females from 

 N.E. Rhodesia in the Oxford University Museum, col- 

 lected by S. A. Neave in the following localities : — Two 

 from Lofu River, 3500 ft. No. 2129, August 13, 1908 ; 

 one from Chisinga Plateau, Kalangwini district, 4500 ft, 

 September 25, 1908 ; three from Upper Kalangwisi 

 Valley, 4200 ft., No. 2125, September 3, 1908, and one 

 from Alala Plateau, Ndola district, 4000 ft, October 12, 

 1905. 



This species may be a dimorphic long-wiug form of 

 X. near ft. 



X. rrisiifrons, sp. nov. 



Frontal scutellum cristate produced, the margins between the an- 

 tennae subentire or barely minutely serrulate, above slightly denticu- 

 late, median carina of vertex slightly crenulate, and bearing a dis- 

 tinct denticle projecting between the middle of the eyes. Pronotum 

 strongly and thinly compressed foliaceous, bearing radiating veins ; 

 superior margin subreniform, forward before the middle flattened 



