208 AMERICAN COLEOPTERA 



pale fuscous, the basal joints rufous, second and third subequal ; palpi rufous. 

 Prothorax very convex, subquadrate, twice as wide as long', wider at base than 

 apex ; apex truncate; anterior transverse impression obsolete, the posterior deep, 

 tripunctate at middle ; median line tine, abbreviated at each end ; basal impres- 

 sions rather small, deep; sides with the margin narrowly reflexed, strongly 

 arcuate nearly to base, sinuate immediately in front of the hind angles, which 

 are rectangular and finely carinate. Elytra slightly wider than the thorax, 

 oblong-oval, with a sutural and two dorsal stria}, also sometimes with traces of a 

 fourth stria; striae impunctate, the two inner much deeper, the sutural only 

 attaining the apex ; dorsal punctures on the third stria, the first slightly in front 

 of, the second slightly behind, the middle. Body beneath piceous, the abdomen 

 more or less tinged with rufous. Legs rufous. Length .08-. 10 inch ; 2-2.5 mm. 



Very distinct in facies from any species in our fauna. Its very 

 robust form, together with the characters above given, will, I think, 

 serve to distinguish it. 



Four specimens, two of each sex, are known to me. Of these one 

 is in the collection of the late Dr. Horn, now a part of that of the 

 American Entomological Society, one in the LeConte collection, one 

 in that of Mr. Charles Liebeck, and the other in my own cabinet. 

 For the latter I am indebted to Mr. Liebeck, whose name I take 

 pleasure in assigning to the species as a slight token of gratitude for 

 many favors. 



It occurs in Texas. 



14. T. xailtlioptis Dej.— Form robust. Color piceous or nearly black, 

 shining, the elytra usually paler at tip. Head as wide as the thorax at apex; 

 eyes large, prominent: antenna? about one-half the length of the body, piceous, 

 the basal joints testaceous; palpi rufous. Prothorax as wide at base as apex, sub- 

 quadrate, nearly twice as wide as long; apex truncate; anterior transverse im- 

 pression obsolete, the posterior distinct, tripunctate at middle; median line very 

 fine, abbreviated before and behind; basal impressions broad, deep ; base trun- 

 cate: sides with the margin very narrowly reflexed, strongly arcuate in front, 

 oblique behind, at most but feebly sinuate immediately in front of the hind 

 angles, which are subobtuse, but not rounded, not carinate. Elytra distinctly 

 wider than the thorax, oblong-oval, with from two to four dorsal stria-, the 

 sutural only attaining the apex; stria? impunctate; dorsal punctures distinct; 

 intervals convex. Body beneath piceous. Legs testaceous. Length .07-.09 

 inch ; 1.75-2.25 mm. 



The striatum of the elytra varies as indicated above. Dejean 

 describes the elytra as " striis duabus dorsalibus distinctis," and while 

 this applies to many examples, others occur with three or even 

 four well-marked striae. As such examples are found throughout its 

 entire range, and are separable by no other characters, we can 

 regard them only as individual variations of one species. The 

 coloration also varies, and, although the elytra are usually paler at 



