152 Mr. G. Lewi.s on 



is widely interrupted behind the neck, surface much less 

 closely and less conspicuously punctured than the head and 

 the points vary in sizes which are intermixed ; the elytra, 

 suiface opaque by reason of a microscopical granulate sculp- 

 ture, punctuation in the scutellar region very minute, in other 

 parts similar to that of the thorax, behind the scutellum the 

 two edges of the suture are raised and form a small tubercle, 

 the two humeral strias are very fine but complete, 1 dorsal is 

 traceable as complete, 2 as dimidiate, 3 is basal, somewhat 

 oblique, and better denned than the two others ; the pygidia 

 are evenly, clearly, and somewhat closely punctulate ; the 

 presternum, the lateral stria; feebly diverge at both ends ; the 

 mesosternum is immarginate behind the keel and the sutural 

 stria is crenate with about twenty crenulations. 



In its general facies this species resembles T. dorice, Mars. 



llab. Palembang, Sumatra. 



Tribalus laividorsis, sp. n. 



Ovalis, supra convexus, brunneus, nitidus ; fronte punctata ; pro- 

 noto stria marginali integra, basi transversa punctata ; elytns 

 lawibus politis, stria suturali nulla ; mesosterno stria marginali 

 late interrupta. 



L. 3 ] mill. 



Oval, convex above, brown and shining; the head im- 

 pressed anteriorly, somewhat elevated over the eyes, but 

 wiihout an apparent stria, surface clearly but not closely 

 punctured ; the thorax, marginal stria well-marked, com- 

 plete, and minutely crenate behind the neck, at the base in 

 the scutellar region there is a conspicuous transverse band of 

 ] unctures ; the elytra, outer humeral stria fine and complete, 

 near the humeral angle is a short, rather obscure, oblique 

 stria, the others are wanting, surface and that of the thorax 

 is brightly polished and the thinly set punctures micro- 

 scopical ; the pygidia have a similar surface; the prosternum, 

 anterior lobe puuctured, very narrowly marginate, keel bi- 

 striate, strise divergent slightly at both ends ; the meso- 

 sternum, the marginal stria is interrupted behind the pro- 

 sternal keel, the transverse stria is slightly bent and consists 

 of about 16-17 crenulations ; anterior tibise gradually dilated 

 to the tarsal end. 



There is no known Tribalus similar to this. 



llab. Montalvan, near Manila {E. Simon). 



Tribalus bicarinatus, sp. n. 

 Breviter ovatus, parum convexus, undique grosse punctatus, uiger, 



