TENEBRIONID.E i8i 



Group V Type horrida Champ. 



As before stated this group is peculiar in having the basal part 

 of the mentum in close contact with the obtusely rounded and 

 rather short sides of the buccal opening and dilated apically, 

 partially enveloping these projections; but the gular pedestal, 

 though shorter, is well developed and, at each of its ends, there is 

 a rather large subcircular opening. The body is flatter above 

 than in the preceding group, larger in size, much more coarsely 

 sculptured and distinctly pubescent, the antennae slender though 

 rather gradually enlarged through joints eight to ten; the eyes are 

 more coarsely faceted and the sides before them are less laterally 

 prominent, less rounded and, anteriorly, are somewhat angulate in 

 a way quite foreign to any of the preceding groups; the elytral 

 ridges are low, subobtuse and are coarsely granulo-tuberculate 

 along their summits. The external apical angle of the anterior 

 tibiae is abruptly produced, long, spiniform and finely aciculate, the 

 outer edge strongly spinulo-serrate, and the tarsi densely fulvo- 

 pubescent beneath. 



Body oblong-oval, opaculate, dark chocolate-brown in color throughout, 

 the vestiture pale fulvous-yellow; head rather small, scarcely im- 

 pressed, coarsely and closely punctate; prothorax fully one-half 

 wider than long, the apex much narrower than the base, moderately 

 sinuate, the angles acute; sides rather strongly rounded, more con- 

 vergent and less arcuate anteriorly; basal angles obtuse but rendered 

 distinct by the small adjacent sinuses of the base, the latter evenly 

 rounded; surface coarsely, rather closely punctate, strongly convex, 

 abruptly rather widely concavo-explanate at the sides, the edge 

 almost vertically reflexed, moderately thin and granulo-crenulate; 

 pubescence rather short and very stiff; elytra barely one-half longer 

 than wide, between a third and fourth wider than the prothorax, 

 obtuse behind, the apical lobe obtuse but distinct; sides parallel, 

 nearly straight, obliquely rounding and reflexed to the very obtuse 

 and blunt basal angles, the thickened costuliform side margin bi- 

 furcating slightly behind the humeri and continuing nearly to the 

 apex, the other two discal ridges moderate, the inner feeble and 

 obtusely blunt, both extending from the base to apical fifth, where 

 they unite, the single feeble resulting line extending nearly to the 

 apical angles, crossing and uniting the ends of the two outer ridges, 

 the surface sparsely, unevenly granular and punctate, the larger 

 granules bearing rather short but stiff erect setae, the smaller and 

 more simple punctures bearing the subdecumbent stiff and peculiarly 

 arcuate but no shorter pale hairs; abdomen coarsely, closely, as- 

 perately punctate and with very small and fine pale subdecumbent 

 hairs; legs rather short and slender, subcylindric, the tibia? and tarsi 



