326 Mr. G. C. Clianipion 07i 



Tliree ? ? , precisely similar, provisionally referred to 

 Chalicoroides in the absence of the (J • More elongate than 

 C. triguttatus, Al).; the prothorax longer, more gradually 

 narrowed behind, and with the margins less extended ; the 

 elytra longer and wanting the common whitish sutural spot. 



Matopius, gen. uov. 



Antennje inserted beneath the outer angles of the epistoma 

 at some distance before the eyes, 11-jointed, joints 1, 3, 4, 5 

 thickened in ^ ; head transverse, subtriangular, excavate in 

 (J, the epistoma truncate anteriorly and without suture 

 behind ; terminal joint of maxillary palpi oblongo-conic, 

 truncate at tip ; prothorax long, constricted posteriorly, 

 uuidentate laterally; elytra oblong-oval; anterior tarsi 

 5-jointed in both sexes, joint 2 extending over the base of 

 3 in cJ ; tarsal claws small, lobed at tlie base ; body elongate, 

 narrow, winged in cJ, apterous in ? , integument coriaceous. 



Type, M. petrejisis, sp. n. 



This genus has the anterior tarsal structure of the 

 " Attalaires" of Abeille, and the ^ cephalic excavation of a 

 Troglops. The 11-jointed antennae, with simply dilated 

 basal joints 3-5 in cJ ? separate Matopius from Laius, some 

 of the Malayan members of which have the sides of the 

 prothorax similarly dentate. Colpometopus, Ab., which has 

 4-jointed anterior tarsi in (^ and an apterous ? , is related 

 to the present genus. 



1. Matopius petrensis, sp. n. (PI. V. figs. 19, head 

 and prothorax, 19 a, antenna, S •) 



cJ . Somewhat convex, opaque, finely pubescent ; black 

 or bluish-black, the basal joints of the antennae testaceous 

 beneath, the elytra each with a very large orange-red or 

 orange patch on the outer part of the disc below the base 

 extending inward to near the suture ; the head and prothorax 

 densely, finely, rugulosely, the elytra coarsely, closely punc- 

 tate. Head bifoveate and deeply excavate in the middle 

 between the eyes, the anterior margin of the cavity produced 

 backward in the centre into a short dentiform projection ; 

 eyes prominent ; antennae comparatively stout, long, sub- 

 serrate, tapering from joint 6 onward, 1 moderately elongate, 

 curved, much thickened, 2 small, 3-5 dilated within, 3 

 triangular, 4 transverse. Prothorax narrower than the head, 

 long, narrowed and constz'icted behind the median tooth, 

 transversely depressed on each side anteriorly and on the 

 disc before the base. Scutellum transverse. Elytra oblong 



