Coleopterological Notices, III. 89 



Kentucky. Cab. LeConte. 



The unique representative is a male, and is not in very good 

 condition for observation. In this specimen the intromittent organ 

 is far extruded, and the curious hinged spike protrudes from the 

 groove along its lower surface in a nearly perpendicular direction. 



The fourth joint of the maxillary palpi is rather short and robust, 

 the apex scarcely as long as the outer side. 



This remarkable species is quite similar in general appearance to 

 certain members of the genus Mycetophila, especially M. megalops, 

 and the slender tarsi, with unusually small narrow and inconspicu- 

 ous lobes, add to this superficial resemblance an element which 

 may indicate a still closer affinity. It is readily distinguishable, 

 however, from any of those species of Mycetophila which it most 

 nearly resembles, by its punctate-striate elytra and altogether differ- 

 ent form of the prothorax, the latter being strongly rounded at apex. 



2 H. niger Melsh. — Proc. Ac. Phil., Ill, 1846, p. 59. — Elongate-oval, rather 

 convex and slender, highly polished throughout, hlack ahove, piceous-black 

 beneath, the abdomen sometimes more rufescent ; legs and antennae piceous- 

 black, the femora toward base and the tarsi paler, rufous ; pubescence coarse, 

 rather long, moderately dense. Head somewhat coarsely, sparsely punctate, 

 the eyes moderate, separated by a little more than their width; antennae 

 rather short, moderately slender, filiform, two-fifths as long as the body, the 

 joints almost parallel, fully twice as long as wide, the third and fourth equal, 

 elongate. Prothorax three-fifths wider than long, broadly parabolic anteriorly, 

 the sides divergent posteriorly and moderately arcuate, becoming parallel and 

 nearly straight in less than basal third, the angles nearly right, slightly 

 blunt ; base transverse, the sinuations narrow and moderate ; disk scarcely 

 impressed, finely, very sparsely punctate, the punctures generally separated 

 by three or four times their own diameters. Elytra nearly three and one-half 

 times as long as the prothorax and not appreciably wider, rather gradually, 

 acutely rounded behind ; sides parallel and nearly straight ; disk with almost 

 completely unimpressed series of small but deep punctures, the series entirely 

 obsolete toward apex, more distinct toward base, the intervals finely but 

 deeply, sparsely punctate. Abdomen finely, sparsely punctate, the meta- 

 sternum rather coarsely, sparsely so externally. Legs slender, the basal joint 

 of the hind tarsi fully one-third longer than the remainder. Length 5.3-6.0 

 mm. ; width 2.1-2.4 mm. 



Canada; Pennsylvania; Florida; Texas. 



The individual above described is a male from Pennsylvania, and 



represents the typical form. The numerous specimens before me 



are divisible into six sections, which are in all probability distinct 



species, but time and material are wanting to definitely fix their values 



Annals N. Y. Acad. Sci., VI, Nov. 1891.— 7 



