South African Grasshoppers. 107 
Described from the female type and a male paratype from 
Laingsburg, Cape Province, 3. x. 1917; one male from 
Spitzkop, Barkley West, Cape Province, 15. xii. 1917; one 
male from Beaufort West, 25. iv. 1917; and one female 
from Deelfontein (Col. Sloggett). 
This species is closely related to S. forbesi, Burr, from 
Sokotra, but easily distinguished from it by the reticulation 
of the elytra, apart from the coloration of the wings. 
5. Acrotylus nigripennis, sp. 0. 
6. Small, but not slender. Antennz nearly twice as 
long as the head and pronotum, somewhat flattened, dis- 
tinctly thickened towards the apex. Head distinctly 
prominent above the pronotum, slightly reclinate. Frontal 
ridge sulcate throughout, except near the clypeus ; its sulcus 
separated from the fastigial impression by a feeble keel ; its 
margins gradually divergent from the fastigium towards the 
median ocellus, slightly approximated and parallel below the 
ocellus and divergent, but gradually disappearing towards 
the clypeus; the ridge at the ocellus is twice as broad as at 
the fastigium and distinctly narrower than the width of the 
vertex between the eyes. Temporal foveole flat, triangular, 
longer than wide. Fastigium of the vertex strongly sloping, 
distinctly depressed, about twice as long as broad ; its lateral 
carine sinuate; the apex trapezoidal, truncate. Eyes 
slightly prominent above the vertex, oval, slightly higher 
than long, and their height subequal to the height of the 
subocular space. Pronotum not longer than its width at 
the shoulders, strongly constricted in the prozona, distinctly 
selliform, with two broad and shallow postocular impres- 
sions; the disc in the prozona convex, with a scarcely 
indicated first transverse sulcus and almost imperceptible 
median keel; the typical transverse sulcus placed in the 
middle, not very distinct ; metazonal disc very feebly convex, 
with the median keel low; hind margin widely rounded ; 
lateral lobes much higher than long; rather strongly im- 
pressed between the sulci; their fore margin bisinuate; the 
lower margin widely rounded in the hind half; the fore 
angle very obtuse, rounded ; the hind angle very widely 
rounded. Mesosternal lobes strongly transverse; their 
inner margins oblique, divergent posteriorly ; the hind 
margins not parallel to the fore margins; the inner angles 
very obtuse ; mesosternal interspace strongly transverse, as 
.wide as one of the lobes, distinctly widened posteriorly. 
Metasternal lobes separated by an interspace about as long 
