9O MEMOIRS ON THE COLEOPTERA 



impressed basal lobe, strongly, densely, muricately sculptured as a 

 rule and subequal in width to the elytra, sometimes broader and 

 occasionally narrower, especially in the female, the elytra sinuate 

 at base, very roughly and unevenly sculptured and with minute 

 granuliferous punctures scattered irregularly over the surface, be- 

 coming a little more pronounced near the side margins, which are 

 acute, gradually rounding inward behind and extending to the 

 apical angles; the inflexed sides, or epi pleura, are very narrow for 

 the present tribe. The head is moderate, the epistoma somewhat 

 subangularly sinuate and the labrum feebly sinuate medially. 

 The mentum is transverse, contiguous to the sides of the buccal 

 cavity, resting upon a very short and broad gular pedestal, the 

 open cavities at the sides of which are very small ; the apex is distant 

 from the closed mandibles, as in all normal Asidids, and has the 

 usual small medial sinus, the ligula small, angularly emarginate, 

 nearly flat and retractile, the palpi moderate. The antennae are 

 rather long, stout, compressed and subparallel, clothed throughout 

 with very stiff black setae, only very feebly enlarged apically, the 

 ninth joint longer than the transverse tenth joint and often fully 

 as wide, the tenth deeply, subobliquely sinuate at apex, with the 

 ends of the exposed apex spongiose, the eleventh very small, short, 

 obliquely truncate in contrary sense to the obliquity of the tenth, 

 and, as usual, spongiose at tip; the third joint is notably longer 

 than the basal joint, conforming to the general rule in the tribe. 

 The prosternum is porrect between the coxae and the convex ab- 

 domen is always coarsely punctate in typical forms of the genus; 

 the trochantin is large and distinct. The legs are rather long and 

 well developed, the tarsi stout, the intermediate three joints of the 

 anterior very short and transverse; they are briefly setose through- 

 out; anterior tibiae moderately everted and acute at apex externally. 

 The tarsal claws are pale testaceous, in marked contrast to the black 

 and dullish integuments of the body and legs. 



In Microschatia, as represented by the typical punctata of Solier, 

 the tenth antennal joint is notably wider than the ninth, the body 

 is flatter and has a very different type of dorsal sculpture, as seen 

 particularly in the rows of coarse punctures on the elytra. In 

 Pycnonotida the eyes are very much shorter, very thin or transverse 

 and are notably less coarsely faceted than in Pactostoma. There is 



