Coleopterolofjical Notices. 157 



recumbent pubescence easily I'emovable, and leaving merely a minnte sitper- 

 ficial scar. Prosternnm not distinctly punctate, minutely, feebly scabrous and 

 alutaceous, the median groove deep but narrow ; episterna transverse, short, 

 the inner marginal line distinct, broadly arcuate ; metasternum with the per- 

 forate punctures about equal in size to those of the elytra, and separated by 

 about three times tlieir own widths. Abdomen dull, excessively minutely, 

 densely pubescent, the perforate punctures completely wanting. Legs mode- 

 rate ; inteiniediate tarsi short, about one-half as long as the tibiae, but with 

 the second joint rather longer than wide. Length 1.5 mm. 



Texas. U. S. National Museum. 



In its entirely impunetate abdomen this species differs from any 

 other of the subgenus; it somewhat resembles ovatua, but differs 

 in its more elongate form and in its coarser elytral punctures, these 

 being about tAvice as large as in that species. The longer hairs of 

 the elytra in ovatus are longer than in navicvlatus, and the short 

 appressed ones much sparser. In ovatus there is no trace of macu- 

 lation, whereas in the present species the pubescence is paler at 

 three indefinite lateral spots on each elytron, giving, under extremely 

 low power, the appearance of three imperfect transverse fasciae ; in 

 the former the intermediate tarsi are nearly two-thirds as long as 

 the tibia?. 



L.. lutrocllinilS Lee. — Bull. U. S. Geol. Surv., V. p. 515. — Ovoidal, 

 gradually pointed behind, nearly twice as long as wide, widest ntar the 

 middle, piceous-brown, very densely pubescent ; integuments shining. Head 

 linely and very sparsely punctate. Prothorax more than twice as wide as long ; 

 sides straiglit ; apex two-thirds as wide as the base; median lobe small, dis- 

 tinct ; median groove obsolete ; surface shining, very feebly i-eticnlate near the 

 sides, not very coarsely, very sparsely punctate, with the interspaces much 

 more minutely, densely punctate. Scutellum small, slightly longer than 

 wide, feebly convex, densely pubescent ; sides and base feebly arcuate. Elijtra 

 about three and one-half times as long as the prothorax ; sides distinctly 

 arcuate and nearly coarctate with those of the prothorax, the humeri alniotit 

 impunetate and slightly, longitudinally tumid ; surface rather coarsely, 

 sparsely punctate ; punctures perforate and separated by from three to four 

 times their own diameters ; interspaces polished, the minute recumbent hairs 

 not arising from definite punctures. Prosternnm shining, minutely and not 

 very densely punctate, much more densely punctate and alutaceons anteriorly ; 

 median groove fine, extending nearly to the apex ; episterna short, broadly 

 triangular, clearly limited within throughout, the inner margin arcuate ; 

 hypomera flat, not impressed, minutely, densely reticulate, dull, minutely, 

 densely pubescent, not visibly punctate ; inner bead wide, flat, polished ; edge 

 of the crural cavity acute and cariniform. Abdomen very dull, rather finely, 

 very sparsely punctate, the interspaces excessively minutely, densely punc- 



