Genera and Species of Coleoptera. 449 
Adesmia* eburnea. 
A, aterrima ; elytris late ovatis, albis, tricostatis, costis remote dentatis. 
Hab, N’Gami. 
Jet-black, shining, the elytra ivory-white; clypeus slightly emargi- 
nate; head finely punctured; prothorax impunctate, very transverse, 
the anterior angles not produced; elytra broadly ovate, very little 
longer than broad, dead ivory-white, obsoletely impressed, each with 
three very distinct but slightly elevated costee, the two inner crowned 
with sharp, slender, distantly set teeth, the outer with a double row of 
more closely set and shorter teeth ; body beneath and legs black; the 
abdomen and sterna finely corrugated. Length 43 lines. 
A remarkable species, very distinct from the other white-winged 
members of the genus (Lange, candidipennis, &c.) in the form of the 
elytra and their toothed coste. It was taken by Mr. Anderson in 
South Africa, somewhere north of Natal, and towards Lake N’Gami. 
Dysarcuvus [ Asidine }. 
Caput transversum, retractum ; clypeus fronte confusus, labrum et mandi- 
bulas obtegens. Oculi transversi, angusti. Palpt mavillares fortiter 
securiformes ; Jabiales minuti. Mentwm transverso-quadratum, angulis 
anticis rotundatis. Antenne breves, 11-articulate ; art. 3 longiore ; 4-6 
brevioribus, subquadratis ; 7 breviter obconico; 8-10 transversis et com- 
pressis; 1] minore quam precedens, rotundato. Prothorax transversus, 
ad latera rotundatus, apice semicirculariter emarginatus, basi truncatus, 
angulis posticis paulo productis. Elytra ovato-rotundata, prothorace 
latiora; epipleure basi late, postice sensim angustatee. Pedes validi; 
tibie antic extus compress, infra emarginatze, bidentate ; postice et 
intermedie trigonate, calcarate ; tas? infra biseriatim ciliati, inter- 
medii et postici art. ultimo breviore quam primus. Sterna et abdomen 
ut in Asida. 
The clypeus being confounded with the front, nearly hiding the lip 
and mandible, is a character at variance with the rest of the sub- 
family. The fore tibie are those of Anomalipus (placed by Solier in 
this group); the tarsi, closely ciliated on each side beneath, appear 
in consequence canaliculate. The granules with which the upper 
parts are covered rise abruptly out of a greyish exudation, and are 
very irregular in form and size. 
Dysarchus Odewahnit. 
D. obscure niger, granulis nitidis instructus. 
Hab. South Australia (Gawler). 
Dull greyish black, covered above with numerous glossy granules ; 
colar) 3 ce! 7 
* Fischer de Waldheim, Entomogr. de la Russie, i. 153; Lacordaire, Gen. v. 
p: 20. 
