COLEOPTERA. 165 



ceous ; meso- and metasterna black ; remahider of antennae dark piccous- 

 brovvn. Pubescence rather abundant, sericeous, cinereous. Head moderate, 

 twice as wide as long ; eyes moderate ; interocular surface ratlier feebly con- 

 vex, polished, inipunctate except the pores for the entrance of the bulbous 

 roots of the hairs; antennae slightly longer than the pronotum, first two 

 joints nearly equal in length, third extremely small, scarcely one-half as 

 long as the fourth or fifth, joints of club increasing almost uniformly and 

 rapidly in length and width, strongly compressed. Prothorax widest at one- 

 fourth its length from the base where it is four-fifths wider than long and 

 nearly twice as wide as the head, nearly one-half wider at base than at 

 apex ; lateral edges nearly straight and strongly divergent from th^ apical 

 angles for two-thirds the length, where they become abruptly very arcuate 

 and thence convergent to the posterior angles, the latter very moderately 

 produced, right and very slightly rounded ; base transverse, broadly and 

 just visibh' emarginate along the base of the scutellum, rather strongly 

 sinuate laterally ; disk very convex, flanks slightly inflexed near the lateral 

 edges, shining, covered with very minute asperities arranged in transverse 

 wavy rows, interspaces minutely reticulated. Scutellum rather large, slightly 

 wider than long, triangular, acute, sides straight, surface transversely aspe- 

 rate. Elytra at base very slightly narrower than the pronotum ; sides nearly 

 parallel and almost straight, very feebly convergent jjosteriorly, conjointly 

 abruptly truncate behind, lateral angles broadly rounded, truncation straight 

 at the inner angles ; disk just visibly longer than wide, distinctly longer 

 than the head and prothorax together, one-half longer than the pronotum, 

 rather convex, more strongly and closely asperate than the pronotum, trans- 

 verse rows only distinct near the suture, interspaces feebly rugulose and 

 confusedly reticulate, shining. Legs well developed, ratlier long; anterior 

 coxae large, contiguous, globose ; posterior somewhat widely sejjarated, two- 

 thirds wider than long, very strongly arcuate behind interiorly, not attaining 

 the elytra and leaving a large i:)ortion of the first venti-al segment exposed at 

 the sides, although extending beyond the first segment longitudinally, very 

 thin and lamellate. Length 0.(i5— 0.8 mm. 



Jenkintown, near Philadelphia, 3. 



Occurs in decaying fungus together with the two species of Ptilium 

 previously described. The posterior coxae differ very greatly in form 

 from those (tf radicola where they are oblicjuely truncate behind and 

 extend with almost undiminished length from their line of mutual 

 contiguity in the middle to the elytra at the sides, concealing tiie 

 entire first ventral segment and, near tlie middle, portions of several 

 others. In funginus the anterior coxae are larger and much more 

 globose, and the eyes are very large and prominent beneath ; from 

 their posterior limits to the posterior limits of the buccal fissure there 

 is a narrow strong carina. 



This species appears to resemble diffinis Matt., but from the direct 

 statement made by Matthews in reference to (he pronotum, "orna- 

 mented with small tubercles irregularly arranged," it ai)pears to be 



