DORCUS. 106 



and feebly bilobed. Tlic pronoium is very smooth, the sides 

 strongly and closely ])uiictured, densely and rugosely at the 

 margins. The punctures extend narrowly along the basal 

 margin. The lateral margins are gently rounded t(^ far 

 beyond the middle, where they are very bluntly angular, 

 and the hind angles are scarcely perceptible. The dytrd are 

 rather closely punctured, the punctures very minute and 

 inconspicuous near the suture but becoming gradually more 

 numerous, those of the sides and apices dense and confluent. 

 There are tliree narrow pairs of fine longitudinally arranged 

 })unctures. The nientum is very coarsely rugose. The front 

 tihia bears numerous rathei- close short teetli and the terminal 

 fork is very short. Tlie middle and hind tibiie have each a 

 sharp lateral spine. 



^. The body is rather dejjressed, the upper surface (except 

 in small specimens) densely granular and (jpaque. The sides of 

 tlie head are very obtusely angular in front and feebly rounded 

 and a little contracted behind the eyes. The clypeal i)rocess 

 is rather short and broad, notched in the middle and angularly 

 produced on each side. The pronoium is broad, its lateral 

 margins bisinuate to the lateral angle, which is sharp and 

 placed before the middle, then rather straight to the hind 

 angles, which are also sharp. The ehjtra are rather short, 

 with the shoulders very sharp and the outer edges gently 

 rounded and converging to the apex. The uieHfiim, is broad, 

 closely granular and densely clothed in the anterior half with 

 short reddish hairs. The front tibia bears numerous short 

 shar[) lateral teeth and the terminal fork is very short. The 

 middle and hind tibia) have each a sharj) lateral spine. 



Variation of the male. In small specimens the up])er surface, 

 instead of being dull, is very smooth and shining. Tlic head 

 is strongly punctiired, except its posterior j)art. Th(^ ])ronotum 

 is rugosely punctured at the sides and very glossy on tlie 

 disc, with its lateral and basal angles feeble. The elytra are 

 distinctly punctured, strongly and closely at the sides, and more 

 parallel -sided than in larger examples. The clypeal process 

 is only feebly notched, the mentum is coarsely rugose and the 

 mandibles are short, not continuous, strongly curved, with 

 a feebly serrate dilatation of the inner edge not reacliing 

 the base or tij). In larger specimens this dilatation is strongly 

 serrate and has a strong tooth at its posterior end, the punctures 

 of head and thorax become gradually rei:)laced by fine graiuda- 

 tions and. those of the elytra become much finer and more 

 indistinct. As the mandibles increase in length the strong 

 basal tooth removes farther from their base and a minute tooth 

 appears shortly before the tip. In large specimens the 

 labrum is so deeply notched as to become bilobed and the 

 entire upper surface is dull and sooty. 



