Coleopterological Notices, VI. 753 



than the head, mvich wider than long, semi-circularly rounded laterally in 

 apical half, the sides thence strongly oblique, becoming sinuate to the ])asal 

 margin, which is narrow and only two-thirds as wide as the disk; apex broadly 

 arcuate; sculpture similar to that of the head but coarser, the punctures large 

 and very shallow, scarcely more than areolne at the inner sides of the small 

 tubercles. Elytra short, one-half longer than wide, one-half wider than the 

 prothorax, connate throughout, semi-circularly rounded behind in fourth or 

 fifth, the sides parallel, not wider behind the middle than at base; humeri 

 widely exposed at base; disk not at all modified at base, very feebly convex, 

 minutelj^, densely punctate, the suture somewhat elevated behind. Abdomen 

 coarsely, sparsely pubescent, the legs moderately long and slender. Length 

 3.0 mm. ; width 0.75 mm. 



Utah (Great Salt Lake). 



A distinct species also represented before me by the female 

 only, this sex having the exposed part of the tergnra feebly con- 

 vex, parabolic at apex, and with a minutely pubescent and nar- 

 row line near the base, extending almost entirely across the disk 

 and narrowly interrupted in the middle. 



4. T. tricolor n. sp. — Narrow and subdepressed, alutaceous, pale rufo- 

 testaceous, the elytra and abdomen pale luteo-flavate, the former crossed just 

 behind the middle by a narrow piceous fascia; pubescence rather short, decum- 

 bent, close and distinct on the elytra. Read subquadrate, nearly as long as 

 wide, truncate at base and somewhat strongly, subcanalicularly impressed in 

 the middle, the angles broadly I'ounded; tempora long, parallel and rather 

 rounded, fully as prominent as the eyes, which are small; sculpture close and 

 granular; antenna; slender, scarcely one-half longer than the head, feebly in- 

 crassate, the eleventh joint rather longer than the preceding two, fourth slightly 

 shorter than either the third or fifth. Prothorax scarcely three-fourths as wide 

 as the head, nearly as long as wide; sides evenly but rather jirominently 

 rounded at apical third or fourth, thence strongly convergent, becoming sinu- 

 ate and parallel to the base, which is somewhat broadly margined and about 

 three-fourths as wide as the disk, the latter moderatel}' convex and granularly 

 rugose. Elytra rather more than one-half longer than Avide and about two- 

 thirds wider than the prothorax, abrujitly arcuato-truncate and distinctly de- 

 hiscent at apex; sides parallel and feebly arevrate, the disk not much wider be- 

 hind the middle than at base, finely, densely punctate, with a very feeble post- 

 scutellar impression; humeri moderately exposed at base and rounded. Abdo- 

 men shining, finely, rather closely punctate, the legs moderately long and 

 slender. Length 3.0 mm.; width 0.8 mm. 



Utah. 



Closely allied to salicola, but distinguishable by the elytral 

 sculpture, smaller eyes and more swollen and more prominent 

 tempora; the tip onl}' of the tergum is exposed in the female, and 



