Goleopterological Notices, V^I. 799 



Eyes much larger, separated by scarcely oue-foiirth more than their own 

 width, the setic distinct and recurved; terminal segment of the abdomen 

 nearly as long as the two preceding; femoral tooth strongly bent, the con- 

 cavity within; size much larger 1. densiis 



Eyes small, separated by three times their own width and very feebly setose; 

 terminal segment only slightly longer than the third; femoral tooth erect; 

 size minute 2. lacustris 



The sexual characters are not distinct, as far as can be observed. 



1. T. deiii^us Csy.— Cont. Col. N. A., II, 1885, p. 187 ( Xylophilus). 



Oblong, moderately convex, brownish-black throughout ; an- 

 tennae dark red-brown ; tibiae brown, the tarsi testaceous ; integu- 

 ments densely punctate, the narrow interspaces polished and mi- 

 nutel}^ punctulate ; vestiture very short, dense, decumbent and in 

 a single system. Head transverse, rather convex, finely and not 

 very densely punctate throughout, the punctures perforate, oval 

 and with their axes directed obliquely to the median line ; 

 tempora about one-third as long as the eyes, measured longitu- 

 dinally, and much less prominent ; antennjB stout, one-third as 

 long as the body, joints seven to ten strongl}^ transverse. Pro- 

 thorax only slightly narrower than the head, transverse, convex, 

 ver}' densely punctate, with two widely separated subbasal im- 

 pressions. Elytra fully three-fourths longer than wide, two-thirds 

 wider than the prothorax, parallel and very feebly, evenly arcuate 

 at the sides ; humeri rounded to the prothorax and rather widely 

 exposed at base ; disk finely but strongly, very densely punctate ; 

 omoplates somewhat large, approximate and distinct. Length 

 2.0 mm.; width 0.75 mm. 



Pennsylvania ( near Philadelphia). The unique type is the 

 only specimen known to me, and is of undetermined sex. 



2. T. laciistris n. sp. — Oblong, somewhat convex, black throughout, 

 the basal joints of the antennae and tip of the eleventh, paler and testaceous; 

 integuments very densely punctate, the interspaces polished and not distinctly 

 punctulate, the pubescence very short and single. Head transverse, rather 

 convex, polished, finely, not very densely punctate; eyes i-ather small, mod- 

 erately convex, at nearly their own length from the base, the tempora par- 

 allel and only slightly less prominent; antenna; not quite two-lifths as long as 

 the body, moderately slender, joints seven to ten perceptibly w idor than long. 

 Prothorax only slightly, though distinctly, narrower than the head, one-fourth 

 wider than long, feebly narrowed in front, the apex transversely and feebly 

 arcuate; sides feebly arcuate; disk convex, extremely densely, finely punctate, 

 ■v\ith two large and deeii subljasal impressions, Ashich are somewhat approxi- 



