158 Mr. C. O. Waterhouse on new Coleoptera. 
postice leviter angustato, antice supra impresso, arcuatim late 
emarginato; thorace antice angustato, lateribus pone medium 
denticulis duobus sat approximatis instructis, dein oblique 
sinuatim angustatis; elytris thorace angustioribus, subparallelis, 
ad latera minus nitidis, subtiliter granulosis, sutura anguste 
infuscata ; tarsis nigYis. 
Long. (mandib. incl.) 17, lat. 4 lin. 
Hab. Singapore (Coll. Atkinson). 
This species has somewhat the colour of Cladognathus 
Mac Clellandi, but it is more shining, much depressed. The 
head is broadest at the eyes, moderately narrowed to the base, 
the sides almost rectilinear; the surface is densely and ex- 
tremely finely punctured. In front it is widely emarginate, 
the part in front of this emargination vertical. The man- 
dibles are twice the length of the head, flat, shining, rather 
widely separated at the base, nearly straight and subparallel, 
and without teeth for three quarters their length ; from this 
point to the apex they are curved inwards, and are pointed 
at the apex. At one quarter from the apex there is a large, 
flat, oblong process directed forwards, having three blunt 
teeth at its apex; between this process and the apex there 
are four small teeth. The thorax has the usual angle at the 
sides before the base, and has another angle just in front of 
it slightly more projecting. The anterior tibiz have on the 
outer edge near the apex three small acute teeth. 
Rutelide. 
EXCHMATOPHORUS, gen. nov. 
Form short oblong. Epistome narrowed anteriorly, biden- 
tate. Mandibles with the apex visible from above, reflexed, 
obliquely truncate, appearing slightly bidentate in certain 
positions. ‘lhorax short and very broad, the sides impressed 
and with incrassate margins, the posterior angles slightly 
projecting beyond the shoulders. Scutellum moderately 
large, about twice as broad as long. LElytra as broad as 
long, with an impression within the shoulder, which conse- 
quently appears raised. Pygidium exposed. Legs short, 
‘especially the anterior; the anterior tibiz with three teeth on 
the outer edge; intermediate tibia with apical half of the 
outer edge emarginate, so that the apical half of the tibia is 
much narrower than the basal half, the apical angle produced 
into a sharp spine ; the posterior tibiz also narrowed beyond 
the middle, but not in such a marked degree. Claws of the 
anterior tarsi small, simple; the anterior claw of the inter- 
mediate and posterior tarsi strongly bifid. Sternal process 
