; 
2 EEN 
Genera of Wingless Brachyderine. 13 
Genus Proscorpus, nov. 
Head about as long as its width between the eyes, with a 
central furrow that almost reaches the vertex ; eyes lateral, 
prominent, semicircular. Rostrum about as long as the 
head, narrowed in front, separated from the forehead by a 
deep furrow that reaches the sides ; ; epistome short, well 
defined, but the sides not carinate, the front margin 
shallowly sinuate ; mandibles squamose (sete aietacdy: 
without any longitudinal dorsal carina, but with an obtuse 
median tooth, the scar indistinct and subtrianeular ; mentum 
bare, much wider in front than behind and rather deeply 
sunk in its cavity, which is more oblong than usual, the 
basal angles being almost right angles; scrobes lateral, 
curved, and squamose, becoming markedly wider and 
shallower behind, the upper edge below the lower margin of 
the eye. Antenne with the scape rather stout, cylindrical, 
and gradually widening from near the base ; funicle stout; 
squamose, the two basal joints of equal length, the remainder 
bead-like and subequal. Prothorax transverse, truncate at 
base and apex. Scutellum minute. Elytra subtruncate at 
the base, not constricted or marginate, without any humeral 
prominence, the. apices jointly rounded. Sternum with the 
gular margin truncate, the coxee in the middle of the pro- 
sternum ; mesosternum longer than usual, the episternum 
meeting the elytron at the base; metasternum between the 
coxe as long as the mid-coxe, with a very shallow ante-— 
coxal fold, tiie episternum not angularly produced internally 
at the base, the episternal suture almost obliterated, the 
hind coxze narrowly separated from the elytra. Venter 
with the intercoxal process slightly angulate and broader 
than the hind coxe; segment 2 longer than 38. Legs rather 
slender ; corbels of the hind tibiz opeu, bare, and terminal ; 
claws connate. 
¢ unknown. 
Genotype, Proscopus marginatus, sp. n. 
The elongate metasternum is quite unusual in the African 
members of this group, and the general facies of the only 
known species is more like that of a Tanymecine of the 
genus Iphisomus. 
Proscopus marginatus, sp.n. (Pl. I. fig. 4.) 
9. Black, with rather thin grey scaling (through which 
the shiny integument is clearly visible) and a few whitish 
markings ; head with a narrow ring of whitish scales round 
