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Transactions of the Boyal Society of South Africa. 
marginate, in the centre a longitudinal impressed line and a somewhat 
broad median basal impression ; scutellum as broad as long, sub-ogival 
but somewhat rounded at apex ; elytra very long, sub-parallel, but slightly 
ampliated at about two-thirds of the length, very little attenuated thence 
to the apical part, rounded at the suture and moderately divaricating 
there, glabrous or very briefly pubescent, the outer border plainly mar- 
ginate, and the dorsal part with more or less distinct longitudinal costules; 
legs slender, very long ; tarsi as long as or longer than the tibiae, the 
joints compressed, briefly bristly underneath, claws long, greatly divari- 
cating, cleft from apex to base ; inner spur of hind tibiae variable in 
shape. 
The livery of the insects included in this genus is dark or light blue 
with a wider or lesser red patch in the centre of the metasternum. All 
the species are African. 
In the male, the basal joint of the anterior tarsi is dilated or lobate 
inwardly, and the outer spur of the intermediate tibiae dilated and 
laminate. 
Although found on low bushes or grasses, the females are also met 
with going slowly along the ground somewhat in the manner of Meloe, to 
which their distended abdomen adds a touch of resemblance. 
One of the South African species reaches British East Africa. 
Key to the Species. 
A^. Elytra strongly coriaceous, dorsal costae very distinct. 
B3. Basal joint of anterior tarsi of <^ broadly dilated outwardly, but 
not lobate. 
Neck as long as broad ; inner spur of hind tibiee extremely long, 
filiform in both sexes jpectoralis. 
Neck longer than broad ; inner spur of all tibiae normal in both 
sexes . . suhriigulosa. 
A^ Elytra punctulate shagreened, dorsal costae very faint. 
B^. Basal joint of anterior tarsi of produced into a long lobe 
inwardly. 
Outer spur of intermediate tarsi of j laminiform, obliquely 
truncate at apex and acuminate at tip, normal in the female ; 
colour of upper side very dark blue or blue-black suhcoriacea. 
B\ Basal joint of anterior tarsi of <j moderately dilated. 
Outer spur of intermediate tibiae long and slender, and basal 
joint of intermediate tarsi scooped inwardly from the base to 
the middle in the <? . 
Light blue ; head with a small red macule in the ? , not in 
the cf ngnifrons. 
Dark blue ; frontal part without a red macule in either sex . . var. delagoensis. 
