38 Transactions of the South African Philosophical Society. 
Sup-Gen. CALYPTOBIUM, Aubé, 
Annal. Soc. Ent. d. Franc., 1843, p. 242. 
This sub-genus, which includes about one dozen species spread 
over the world, including several regions of Africa, is distinguished 
from Holoparamecus proper by having eleven-jointed antenne in both 
sexes. 
HoboparAMECUS (CALYPTOBIUM) RAFFRAYI, Bel., 
Annal. Soc. Ent. Belg., 1893, p. 440. 
Very closely allied to H. niger, Aub., and almost of the same 
colour and size, but differentiated by the basal pattern of the 
prothorax. It is elongate, somewhat convex, shining, piceous black, 
with the antenne and legs testaceous; antenne eleven-jointed, the 
two basal joints stouter and longer, three to nine much more slender, 
short and transverse, scarcely oblong, nearly equal, tenth and 
eleventh forming a rather valid club obliquely truncate at tip; eyes 
extending laterally from the insertion of antenne to the margin of 
the thorax; pronotum cordate, a little wider than long, rounded 
laterally in front, not deeply, but under a strong magnifying glass 
distinctly punctulate; in front of the base are two transverse, 
slightly impressed lines (the anterior less, the posterior more con- 
spicuous) limited on each side by a deeper and wider longitudinal 
groove, and divided by a slender median line without any central 
raised ridge; elytra oblongo-ovate, vaguely punctulate, sutural stria 
impressed. Length about 1 mm. 
Hab. Cape Colony (Cape Town), captured under stones in April 
or May. 
Tre LATHRIDIINI. 
Reitter, Stett. Entom. Zeit., 1875, p. 313; Belon, Rev. France. 
d’Entom., 1897, p. 110. 
Gren. METOPHTHALMUS, Woll., 
Insect. Mader., 1854, p. 192. 
Body sub-ovate, partly covered with a white, chalk-like substance ; 
head bi-tuberculate or bi-sinuate on the upper side; antenne ten- 
jointed, inserted at the anterior angle of the frontal part, the two 
