1893.] NATURAL SCIENCES OF PHILADELPHIA. 549 



reaching the level of dorsuium; shoulder tubercles separated dis- 

 tinctly from the tegulse; anterior wings with an elongate- lanceolate 

 marginal cell, which has no appendiculation, and three large sub- 

 marginal cells, the second of which is narrowed more than one- half 

 to the top and receives both recurrent nervures; the third submar- 

 ginal cell is nearly as large as the third discoidal and scarcely nar- 

 rowed at the top; stigma tolerably distinct, more so in the $ ; cubital 

 vein of hind- wing originates beyond the apex of the submedian cell; 

 legs tolerably stout, the tibiae and tarsi of 9 distinctly spinose, in the 

 $ scarcely so; middle tibice of both sexes with two spurs: anterior 

 tarsi of 9 have a well-developed tarsal-comb, which is entirely ab- 

 sent in the $ ; the hind femora are broadest between their base and 

 middle; claws not toothed; metathorax above with n large, distinct 

 triangular enclosure; last dorsal segment of 9 , with a distinct pygi- 

 dial area, the £ also ivith a pygidial area, which k much less de- 

 veloped. 



Dienoplus seems to connect Bothynostethus more closely to the 

 Larrites, being intermediate between Astatus and that genus, a fact 

 which tends to more closely unite the Larridie with the Nyssonidce. 

 Dienoplus is, however, not closely related to either Astatus or 

 Bothynostethus. 



Dienoplus pictifrons 11. sp. 



9. — Anterior margin of clypeus slightly but broadly incurved; 

 front finely and closely punctured, the vertex more sparsely so; be- 

 hind each hind ocelli there is a deep fovea; first joint of flagellum 

 longer than the second; dorsuium with tolerably strong and sparse 

 punctures; scutellum not impressed; upper surface of metathorax 

 with a large, triangular enclosure, and at the base with short, 

 radiating striations, metapleura? and posterior face finely striated; 

 abdomen finely and rather sparsely punctured; pygidial area with 

 large, sparse punctures. Black; abdomen, except a blotch on dor- 

 sal segments 4 and 5, red; mandibles medially and anterior tarsi, 

 reddish-testaceous; scape beneath, inner orbits from the clypeus to 

 the middle of front, anterior half of clypeus and the fore tibia? in 

 front, yellow; wings subhyaline. Length lh mm. 



S . — Antennae as long as head and thorax together, the first joint 

 of flagellum about equal to the second, the last joint as long as 

 the two preceding united; fore margin of scutellum with a row of 



