166 Transactions South African Philosophical Society. [vou. Xt. 
front, the clypeal carina is visible in the centre only, the piceous 
antennal club is shorter than the whole pedicel, the marginal fringe 
of hairs on the elytra is much shorter, and so is the pubescence on 
the under side, nor are the hind legs bristling with so many erect 
hairs. 
I have seen only one example of this species, and two, including 
the type in the British Museum, of the other, yet owing to the shape 
of the clypeal part of the head, coupled with the shorter antennal 
club, I think 7. tctania is distinct from T. flavipennis. 
Length 9 mm, ; width 33 mm. 
Hab. Damaraland (Walfish Bay). 
Gen. ACHLOA, Erichs., 
Entomogr., 1840, p. 41. 
Nanarcta, Blanch. 
Mentum very narrow, parallel, ligular part ogival, basal joints of 
labial palpi massive, contiguous, set on the outer face of the ligular 
part which they hide, apical joints cylindrical, truncate at the tip, a 
little longer than the two preceding taken together ; maxille slender 
and having the maxillary palpi inserted at the apex and inwardly 
a narrow, tooth-like process, obtuse and penicillate at the tip, 
maxillary palpi long, the last one very elongated, cylindrical, slightly 
inflexed towards the tip, mandibles triquetrous, sharp at tip, but 
without molar tooth or fringe of short hairs; antennz 9-jointed, 
joints 3-5 of nearly equal length, 6 compressed, sharply acuminate 
inwardly, 7-9 laminate, long and forming the club which is only a 
little shorter than the whole pedicel; clypeus more or less concave 
with the anterior margin plainly raised, sloping in front, labrum 
separated from the anterior part of the clypeus by a plain suture, 
triangular, not notched at the tip, but occasionally with a slight 
longitudinal impressed line in the centre, head as long as the clypeus 
and separated from it by a transverse suture ; eyes large, bulging, 
divided in the anterior part by a very short canthus; prothorax 
plainly narrowed in the anterior part, very little wider across the 
median part than across the base which is bi-sinuate; scutellum 
broadly ogival; elytra non-costulate and non-striate except for the 
juxta-sutural stria which, however, is nearly obliterated, sub-parallel, 
convex, covering half the broad propygidium, and having a row of 
long setz along the outer margins; pygidium sloping forwards almost 
as much as in some South African Hopline, on account of this great 
development of the pygidium the abdominal segments are very 
narrowed in the centre, and the penultimate segment has a distinct 
