MR. H. N. RIDLEY OH THE 
JEstiietus, h. gen. 
General characters of Cyrtosoma. Mentum small, narrowed at 
the base, truncate in front ; ligula somewhat round ; labial palpi 
short and stout, the apical joint rather large, ovate. Labrum 
nearly twice as broad as long, nearly straight in front, the angles 
rounded. Head transversely impressed between the eyes. Epi- 
stome not separated from the forehead by a distinct line, consider- 
ably advanced in front of tbe insertion of the antennae, obliquely 
narrowed in front. Thorax evenly convex, the sides gently arcuate. 
Scutellum very small, short triangular. Elytra oblong-ovate, very 
convex, but somewhat flattened dorsally ; their epipleura very 
broad and flat, gradually narrowed to the apex of tbe elytra. 
Wings absent. Prosternal process considerably produced pos- 
teriorly, acuminate, horizontal. Mesosternum sloping, slightly 
concave. Metasternum very short ; intermediate and posterior 
coxal cavities separated by a very narroiv space. Antenme mo- 
derately long and slender, the third to seventh joints elongate, 
the apical joints a trifle broader. All the tibiee slightly curved. 
TEsthetus tuberculatus, n. sp. 
Piceo-niger, nitidus ; capite crebre sat fortiter punctato, epi- 
stoino convexo, subti liter punctulato ; labro piceo-flavo ; thorace 
creberrime punctato, latera versus tenuiter ruguloso ; elytris 
opacis, fortiter striatis, striis impunctatis, interstitiis sat convexis, 
singulis serie tuberculorum minutorum instructis ; antennis, palpis 
tarsisque piceis, tibiarum apice intus, tarsisque subtus fulvo- 
pilosis. 
Long. 9-11 millim. 
The antenme are somewhat slender ; the second joint scarcely 
longer than broad, the third three times as long as the second ; 
the fourth to seventh joints elongate, each a trifle shorter and 
broader at its apex than the previous one ; the eighth, ninth, and 
tenth joints pilose, broader and shorter than the seventh, but 
not transverse ; the eleventh oval. The thorax is evenly convex, 
very gently arcuate at the base, emarginate in front, moderately 
rounded at the sides, finely margined all round (except at the 
middle of the front margin), the posterior angles are very slightly 
projecting, the anterior angles slightly obtuse. The punctures on 
the disk are close and distinct, at the base and at the sides they 
are very fine and obscure. On each side of the disk the surface 
