242 Mr. J. S. Baly's Descriptions of 



Mas. — Femoribus posticis elytra modice superantibus, validjs ; 

 intiis ad basin flavo-tomentosis ; supra apicem versus com- 

 presso-dilatatis et ibi carinatis, subtus ante apicem dente 

 valido trigono annatis ; tibiis ejusdem paris flexuosis, apice 

 mucronatis, extus pone medium dente elongato arcuato in- 

 structis ; abdominis segmento primo complanato, remote 

 punctato. 

 Long. 85 lin. 



Dull metallic-green, sub-nitidous, obscurely stained with purple ; 

 antennae black, basal joints obscure purple. Head with its vertex 

 finely punctured ; antennae robust, longer than half the body. 

 Thorax slightly broader than long, anterior margin moderately 

 produced, anterior angles sub-prominent, obtuse ; upper surface 

 minutely punctured, impressed at the base with a broad shallow 

 fovea; scutellum small, semi-ovate, shining black. Elytra oblong- 

 ovate, truncate at the base, narrowed towards their apex, convex, 

 their extreme base between the shoulders deeply impressed, the 

 basal margin itself being elevated into a narrow ridge ; shoulders 

 slightly prominent, their inner edge bounded by a deep longitudinal 

 fovea; basilar space bounded beneath by an indistinct transverse 

 impression ; surface covered with fine punctures, arranged in 

 longitudinal strias, approximating in pairs and becoming obsolete 

 towards the aj^ex of the elytra ; interspaces minutely punc- 

 tured, very finely reticulate-aciculate. First segment of abdomen 

 distinctly punctured, its centre without the usual covering of hair, 

 but together with all the other segments sparingly fringed near 

 the lower edge with coarse fulvous pubescence ; posterior femora 

 extending beyond the elytra for about a fourth their length, 

 strongly incrassate, sub-clavate, outer surface longitudinally con- 

 vex; their upper edge rounded, its posterior third dilated and 

 compressed into an acute ridge, notched immediately above the 

 extreme apex of the thigh ; lower edge armed near its apex with 

 a stout trigonate tooth ; inner surface concave, its anterior half 

 covered with a large patch of coarse fulvous hairs ; posterior tibiae 

 arcuate at the base, their middle portion flexuous, the apex sub- 

 uncinate, the outer edge below the middle armed with a stout 

 spine. — Male. 



Hab. White Nile, A single specimen in my own collection. 

 I have named this beautiful species after my friend S. Stevens, 

 Esq. It is nearly allied to S. Senegalensis, but nearly twice the 

 size, longer and more parallel than that insect, less narrowed 

 behind, rather less convex, its surface sub-opaque ; upper edge of 

 the hinder thighs more compressed and dilated at the apex ; thorax 

 much broader. 



