Genera and Species of Coleoptera. 53 
not at all; tibize short, the distal extremity of the posterior scarcely 
reaching to the end of the abdomen; antennz black, the basal joints 
with a slight pubescence. Length 9 lines. 
Of the two species of Promeces mentioned by Serville, one, the 
Saperda clavicornis of Fabricius, is a Polyzonus. The error is the 
more remarkable, as he has perfectly well distinguished Promeces by 
the setaceous, twelve-jointed antenne of the males. Polyzonus 
clavicornis, a common Cape insect, on the contrary, has the antenne 
claviform and eleven-jointed in both sexes. The Comte de Castelnau 
has failed to notice any peculiarity in the antenne either of Pro- 
meces or Polyzonus, and is apparently ignorant of the females of the 
former, since he ascribes filiform antenne to both sexes, the fact 
being that they are setaceous, not filiform, in the males and clavicorn 
in the females. With regard to Polyzonus, the species described 
above is remarkable for its subcylindrical prothorax rather closely 
covered with a short decumbent pile, and is distinguished from all 
others of the genus known to me by the yellow apex of the elytra. 
Polyzonus scalaris (Dej.). 
P. angustus, chalybeatus ; prothorace breviter subovato, rugoso-punctato ; 
- elytris luteis, fasciis tribus latis chalybeatis. 
Hab. Cape of Good Hope. 
Narrow, dark steel-blue; head coarsely punctured, epistome very 
short, lip large, broader anteriorly, scarcely emarginate, eyes black ; 
prothorax shortly subovate, very roughly punctured, scarcely pubes- 
cent; scutellum narrowly triangular ; elytra strongly and closely punc- 
tured, luteous yellow, with three broad dark chalybeate bands, the first 
towards the base, the second in the middle, the third apical; body 
beneath steel-blue, with a silvery-grey pubescence ; legs steel-blue, 
femora of the anterior and intermediate pairs only moderately clavate ; 
antenne very dark steel-blue. Length 7 lines. 
In the disposition of the bands on the elytra this species comes 
nearest Polyzonus Mellyi, White, but is smaller, narrower, with a 
more ovate prothorax, which is scarcely or not at all pubescent, and 
with very much broader bands on the elytra. I believe it to have 
been hitherto unpublished. 
Promeces [ Cerambycidee]. 
Serville, Ann. de Soc. Ent. de Fr. iii, p. 27. 
Promeces viridis (De}.). 
P. viridi-ceruleus, corrugatus; prothorace brevi, lateribus irregulariter 
rotundatis ; femoribus posticis subclavatis. 
Hab. Natal. 
