Coleopterological Notices, VI. T53 



tlian the head, much wider than long, semi-circularly rounded laterallj^ in 

 apical half, the sides thence strongly oblique, becoming sinuate to the basal 

 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 areolse 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, 

 minutely, 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 tergum feebh' con- 

 vex, parabolic at apex, and with a minuteh' 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 elyti'a 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. Head subquadrate, nearly as long as 

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

 the middle, the angles broadly rounded; tempora long, parallel and rather 

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

 granular; antennse 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 moderately convex and grauularly 

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

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

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

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

 scutellar impression; hiuneri 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 ej^es and more swollen and more prominent 

 tempora; the tip only of the tergum is exposed in the female, and 



