210 LUCANID^. 



angles, which are very blunt, and a little concave to the basal' 

 angles, which are weU marked. The elytra are finely and 

 rather closely punctured and dull, except upon a triangular 

 basal area the apex of which nearly reaches the middle of 

 the suture, where they are shining and less punctured. The 

 mention is very coarsely punctured and not hair}'. The 

 prosternum is strongly elevated between the coxse, short and 

 romided behind. The metasternum and abdomen are shining, 

 strongly punctured at the sides and finely in the middle. The 

 front tibia is broad, bluntly l^ifurcatecl at the end and scarcely 

 perceptibly toothed at the side. 



(J. The head is finely and densely granular, except at the 

 sides, where it is coarsely rugose, the sides are rounded in front 

 and feebly rounded behind the eyes. The pronotum is very 

 finely and densely granular, with the front angles rather sharp, 

 the sides diverging, at first strongly, then less strongly, to the 

 lateral angles, which are very jirominent, and then strongly 

 concave to the basal angles, which are very sharp. The 

 scntellvm is rather shining. The elytra are very finely and 

 fairly closely punctured, the punctures distinct upon the inner 

 part, finer and less distinct upon the outer part. The outer 

 margins are rounded and rather broadty flattened. The lower 

 surface is finely coriaceous, opaque at the sides and shining 

 in the middle. The menturn is densely clothed with fairly long 

 yellow hairs. The j)^'osi^^'num is produced behind into a 

 doAniward pointing process. The tihix are fairly stout, the 

 front ones rather long and genth' curved, the short termiiial 

 fork succeeded by two extremely minute lateral spines. The 

 middle and hind tibiae bear close fringes of yellow seta? at the 

 imier edge and the long tarsi are clothed beneath with rather 

 long jtUow hair 



Variation of the male. — Variable phase. The head is long and 

 the mandibles are short, in close contact, gently curved 

 externally, acutely pointed at the tijD and bearmg a few short 

 stout teeth at the inner edge. The front margin of the liead 

 is strongly excised and the clypeal process small and narrow. 

 In the smallest specimens the mandibles are about half the 

 length of the head, and in full-sized males about three-quarters 

 of its length, otherwise there is little difference. 



Constant phase. The head is short and broad, and the 

 mandibles are long, slender, far apart at the base, strongly and 

 evenly rounded, enclosing a nearly circular space when in 

 contact at the tips, Avhich consist of two nearly equal short 

 branches. The imier edge of the mandible is unarmed basally 

 for less than half of its length and the remaining part is fijiely, 

 closely and evenly toothed, the first tooth a little larger than 

 the rest and placed upon a rather higher level. The ch^jeal 

 process is rather broad and rectangular. 



