108 F. H. Gravely. u 
the upper and inner angle of each is produced, in the only unworm 
specimen before me, to form a small blunt dentiele; the ridges joining the 
outer to the inner tubercles are sometimes indistinct, especially on the right 
side. The whole of the anterior margin of the head, together with the 
canthus, is strongly rugose. The median groove of the pronotum is 
Fig. 2B. 
Head of Hyperplesthenus impar, KUWERT. x 4. 
markedly incomplete in front, and the scars are smooth and hairless. The 
scntellum is less distinetly or not grooved in the middle line, and is 
unpunetured outside the usual punetured and pilose area in the middle 
of the anterior margin, which in the type specimen is very large. The 
unpunctured posterior part of the mesothoracic episterna is somewhat 
more extensive than in Z. glaber. The scars of the mesosternum are 
perhaps a little smaller. and deeper. The grooves of the elytra are 
unpunctured. 
Hyperplesthenus gracilis (Heller). 
Redescribed from two specimens (paratypes) from the Toricelli 
Mountains, Kaiser-Wilhelms-Land, New Guinea, and from one from the 
frontier between German and Dutch New Guinea; all in the Deutsches 
Entomologisches Museum. 
Length 36—38 mm. This species resembles both the preceeding 
ones except in the following respects. T'he anterior margin of the labrum 
is not distinetly concave. The upper tooth of the mandibles, though 
very small, is somewhat more acute, The puncturing of the mentum 
is never more, and may be even less, extensive than in H. glaber; the 
scars are variable, beine either »-shaped or almost straieht, and may or 
may not be united behind. The upper surface of the head closely 
resembles that of A. zmpar, but the inner and upper angle of the right 
