168 DICHODONTUS HEXAQOXUS. 



Lugd. Bat.), very faintly emargiiiate, sharply aad strongly 

 reflexed , the lateral angles not rounded oiï at all ; the 

 basal joint of the antennae coarsely punctured. 



The prothorax is distinctly mai-gined and has the shape 

 of a transverse hexagon; it is widest at the middle , strongly 

 narrowed towards the front margin , but slightly so to- 

 wards the base; before the middle the sides are concave, 

 behind the middle they are faintly convex , the front mar- 

 gin is distinctly trisinuate , with strongly protruding la- 

 teral angles , the base slightly bisinuate , the lateral angles 

 obtuse (containing more than ninety degrees) , not rounded 

 off at all. The basal half of the thorax is elevated ; the 

 front margin of the elevated portion (situated between the 

 median lateral angles) slightly protrudes and shows two 

 pairs of small tubercles, of which the outer, more dis- 

 tinct pair is placed a little more backwards and separated 

 from the inner one by an arc-shaped emargination. The 

 prothorax is strongly sculptured but shows three smooth 

 and very shining patches on the anterior half, one (the 

 largest) in the middle and a small one on each side of 

 it; moreover a nearly irapunctate and very shining trans- 

 verse streak is present on the middle of the elevated ba- 

 sal half. The scutellum is covered (except on its margins) 

 with a reticulate sculpture. 



The elytra are shining and rather short and broad , their 

 lateral margins sharply edged; each of them shows, be- 

 tween the suture and the shoulder, three somewhat obli- 

 quely directed costae which are marked by two rows of 

 ocellated punctures; the costae are flat and impunctate, 

 the rest of the elytra is more or less regularly provided 

 with punctures similar to those by which the costae are 

 marked. The sutural striae are deeply impressed , and 

 strongly crenulated on the outside. 



The pygidium is delicately sculptured and densely co- 

 vered with erect ferruginous hairs. 



Undersurface : the middle of the prosternum , and the 

 nieso- and metasternum very densely covered with a long 



^otes from tlie Leyden lyEuseuin, Vol. IV. 



