150 Mr. G. Lewis on 



Atholus malaysi, sp. n 



Ovalis, parum convexus, niger, nitidus ; fronte obscure punctulata, 

 stria semicirculari ; pronoto utrinque foveolato, stria laterali 

 interna basi abbreviata ; elytris striis 1-4 integris, 5-6 dimidiatis, 

 humerali brevi; mesosterno margin ato ; tibiis anticis raulti- 

 denticulatis. 



L. 41 mill. 



Oval, little convex, black and shining ; the head obscurely 

 punctulate, stria semicircular ; the thorax, marginal stria 

 interrupted behind the head, outer lateral wanting, inner 

 abbreviated before the base, feebly crenate behind the neck, 

 within the stria behind the anterior angle is a shallow fovea ; 

 the elytra, humeral stria short and bent and near the middle, 

 1-4 dorsal complete, 5-6 nearly dimidiate, but the sutural is 

 slightly the longest ; the pygidia are finely punctured with 

 minute points in the interspaces ; the prosternum is micro- 

 scopically strigose, the anterior lobe has a strong lateral stria, 

 but the apex is not marginate ; the mesosternum is widely 

 arched, with a fine crenate marginal stria, the sutural trans- 

 verse stria is straight and also crenate ; the anterior tibiae are 

 denticulate on the outer edge and the denticulations are con- 

 tinued round the angle to the tarsus. 



This species somewhat resembles A. silcicola and baberii, 

 Lew. 



Hob. Malacca Peninsula. 



Tribalus cavernicola, Lewis, 1908. 



Ovalis, supra subdepressus, subaeneus, nitidus ; fronte concava, supra 

 oculos elevata, lere laevis ; pronoto basi transversim impresso ; 

 elytris striis obsoletis ; prosterno striis utrinque divergentibus ; 

 antennis pedibusque obscure brunneis. 



L. 3 mill. 



Oval, somewhat depressed above, brassy, shining ; the 

 head concave anteriorly, with lateral margins elevated, surface 

 almost impunctate; the thorax is evenly, finely, and rather 

 closely punctulate, marginal stria complete, along the middle 

 of the basal edge there is a narrow, transverse, rugose impres- 

 sion ; the elytra, dorsal striae short, oblique, and ill-defined, 

 disk and the pygidia are also smooth ; the prosternum, lobe 

 marginate, clearly punctured, and microscopically strigose, 

 striae divergent before and behind, keel lightly sculptured ; 

 the mesosternum, marginal stria very fine and interrupted 

 in the middle, evenly, sparingly, and very minutely punctu- 



