528 Guleojderological Xoticeff, VI. 



a1)ove; tibia; and tarsi slightly iufuscate; antemut' black, joints three to 

 li\e more or less dark rufo-piceous; pubescence rather short and sparse, 

 ashy-white, the intermixed setie rather abundant l)ut unusually short and 

 in great part pale on the elytra, especially toward the sides. Head not 

 quite two-thirds as wide as the prothorax, smooth, not rugose at the 

 sides, finely, remotely punctate, the epistoma rather long, moderately 

 transverse; labrum almost semi-circularly rounded ; eyes moderate in 

 size but prominent, distant from the base; anteun;e l)ut sliglitly longer 

 than the prothorax, the last three joints just visibly wider, the penultimate 

 transverse, fifth scarcely dilated. Prothorax fully two-thirds wider than long, 

 the sides broadly rounded behind tlie middle, feebly convergent and straighter 

 anteriorly, slightly convergent and sinuate toward the basal angles which are 

 acute and minutely j)rominent; base .strongly arcuate but becoming obli(]ue 

 and subsinuate near the angles; apical angles ol)tuse and blunt but rather 

 pronounced; apex broadly arcuato-truncate; disk minutely and remotelj' 

 punctate, feebly rugose near the basal angles only. Ehftra scixrceiy three- 

 fifths longer than Avide, almost one-fourth wider than the prothorax, parallel, 

 very feebly inflated behind, the sides slightly arcuate except near the base; 

 apex almost evenly rounded ; disk rather finely but strongly, somewhat closely 

 punctate. Abdomen finely and not very densely cinereo-pubescent. Length 

 3.1 mm.; width 1.25 mm. 



Arizona (near the Grand Canon of the Colorado). 



The single type of this distinct species is a female, with the 



fifth ventral rounded behind and feeltl}' impressed on the disk in 



a large rounded median area ; it was collected and kindly given 



to me by Dr. T. Mitchell Prudden, of New York. 



* 

 80. T. pedalis Lee— Proc. Acad. Nat. Sci., Phila., 18GG, p. 35.3 ( Pristo- 



scelis). 



Elongate-oval, strongly convex, highly polished, l)lack with a 

 very feeble greenish-teneous lustre ; legs red ; antenna; dark tes- 

 taceous, the first and outer joints blackish ; i^nbescence coarse, 

 sparse, erect and bristling, blackish throughout, the marginal 

 fringe of the el3'tra more or less pale. Head scarcely more than 

 three-fifths as wide as the prothorax, smooth, finel}' and remotely 

 punctate, the impressions separated l\y a large and pronounced 

 impunctate convexity ; labrum strongl3' rounded ; e3'es rather 

 large and prominent ; antenn;e barely as long as the prothorax, 

 slightly incrassate, the penultimate joints transverse. Prothorax 

 large, slightly more than one-half Avider than long, the sides 

 rounded at basal third, thence distinctly convergent and very 

 feebl}' arcuate to the apex, convergent and straight to the basal 

 angles which ai-e very obtuse but not rounded; apex truncate, de- 



