134 Mr. F. P. Pascoe on the Colydiidee 
strie respectively rising posteriorly into a short but strongly marked 
ridge, the outermost only extending to the apex; body beneath pitchy 
brown, moderately punctured; antenne, palpi, and legs ferruginous. 
Length 3 lines. 
The two very prominent ridges on the declivous apex of each 
elytron at once separate this species from its Brazilian congeners. 
TruRis. 
Caput subquadratum, lateribus elevatis. Antenne basi tectee, 11-articu- 
latee, clava triarticulata, submoniliformi. Palpi breves, apice trun- 
cato. Prothorax subquadratus, quadricostatus. Elytra parallela, cari- 
nata.  TZibie trigonatee, breviter calcarate. Tarst articulis tribus 
primis brevissimis. Corpus breviter subcylindricum. 
This genus has a very close general resemblance to Hulachus, Er., 
and appears to differ from it only in the three-jointed club of the 
antenne and in the very short basal joints of the tarsi. From 
Colydium, which has also a three-jointed club, it is separated by its 
ribbed prothorax, short tarsi, and other characters. 
Ithris decisa. (Pl. VIII. fig. 9.) 
I. rufo-brunnea, opaca; antennis pedibusque ferrugineis. 
Hab. Sarawak. 
Reddish brown, opaque; head subquadrate, raised at the side ante- 
riorly, and forming a thin plate over the antennz, the front remotely 
granulate; eyes rather large, prominent; antennz 11-jointed, the two 
basal joints incrassate, the six following more or less transverse, the last 
three forming a stout submoniliform club, which is above a third of 
the length of the antenna; prothorax subquadrate, a little longer than 
broad, the front somewhat produced, the posterior margin rounded, 
the sides nearly parallel, crenate, the disk with four longitudinal cost, 
the two central approximating at the base, the intervals remotely 
granulate; elytra not broader than the prothorax, the sides parallel, 
with four stout carinz on each, their edges crenate, the intervals with 
a double row of squarish punctures; tibize trigonate, shortly spurred ; 
tarsi with the first three joints very short; body beneath ferruginous, 
slightly punctured, the abdomen with short elevated lines. Length 
1 line. 
Petalophora brevimana. 
Pascoe, ante, p. 37.—Sarawak. 
Metopiestes hirtifrons. 
Pascoe, ante, p. 38.—Dorey. 
