lyS DAVENPORT ACADEMY OF NATURAL SCIENCES. 



tinctly silicate, especially in the male; frontal costa about or hardly 

 as wide as the interspace between the eyes, subequal, just not reaching 

 the clypeus, faintly (cJ') or distinctly (9) sulcate below the ocellus, bi- 

 seriately punctate above; eyes moderate, but little more prominent in 

 the male than in the female, distinctly longer than the infraoctilar por- 

 tion of the genaj; antennae castaneous or rufous, infuscated apically, 

 in the male about two-thirds as long as the hind femora. Pronotum 

 rather short, faintly (d^) or distinctly (?) enlarging from in front 

 backward, dark fuscous above, the lower portion of the lateral lobes 

 luteo- or olivaceo-testaceous, the disk convex, and passing, by a distinct 

 angulated shoulder forming weak lateral carinse, into the vertical, an- 

 teriorly tumid (c?) or subvertical (9) lateral lobes; median carina 

 prominent, equal, percurrent ; front margin subtruncate, in the male 

 feebly flaring, hind margin subtruncate, faintly rounded, sometimes 

 with the faintest possible median emargination; prozona feebly longi- 

 tudinal (c?) or longitudinally subquadrate (9), fully a third longer 

 than the finely punctate metazona. Prosternal spine moderate, coni- 

 cal, blunt, suberect; interspace between mesosternal lobes quadrate or 

 longitudinally quadrate (d^) or somewhat transverse ( 9), the mesos- 

 ternal lobes subattingent (c?) or rather distant (9). Tegmina a little 

 shorter than the pronotum, separated above, elliptical, apically 

 rounded, dark fuscous. Fore and middle femora a little tumid in the 

 male, testaceous, more or less infuscated; hind femora rather short 

 and thick, blackish fuscous above, the outer face black with the infer- 

 ior flavous stripe already mentioned and the upper edge reddish ilav- 

 ous, the under surface orange and the geniculation fuscous ; hind 

 tibiae dull or bright red, rarely luteous, the spines black almost to the 

 base, 1 1 -1 2 in number in the outer series. Extremity of male abdo- 

 men very clavate, strongly recurved, the supraanal plate subhastate 

 with gently elevated margins, and a deep percurrent or almost percur- 

 rent median sulcus with high margins ; furcula consisting of a pair of 

 slender, tapering, parallel fingers extended over the basal fifth of the 

 supraanal plate; cerci simple subtriangular laminae, largest just be- 

 yond the extreme base, in one vertical plane, the upper edge nearly 

 straight or feebly concave, the lower edge bent rounded, the apex 

 bluntly rounded and hardly half the basal width, the whole less than 

 twice as long as the greatest width ; subgenital plate broad and broad- 

 est at base though subequal and much longer than broad, the apical 

 margin feebly elevated and faintly tuberculate. 



