Coleopterological Notices, VI. 479 



8. T. castus u. sp. — Elongate-oval, convex, black, polished, the upper 

 snii'ace ■v\'ith a feeble a'neous lustre; legs and antenna^ black, the tibia; and 

 tarsi feebly piscescent; pubescence rather long, deciinibent, cinereous, some- 

 what dense on the elytra, sparser anteriorly. Head scarcely three-fifths as 

 wide as the prothorax, somewhat finely, sparsely punctate, slightly rugose to- 

 ward base, broadly and strongly bi-impressed anteriorly, the imj)ressions sep- 

 arated by a wide and elongate im punctate area; epistonia short, rectilinearly 

 truncate, flattened; labrum broad but rather long, the apical margin very 

 broadly parabolic, the disk with some long setre; eyes moderately large, not very 

 prominent; antenna; liarely longer than the prothorax, rather stout, the tenth 

 joint distinctly transverse, the fifth not distinctly dilated. Prothorax nearly 

 three-fourths wider than long, widest just behind the middle, where the sides 

 are very obtusely prominent, thence almost ecjually convergent and nearly 

 straight to the apex and base, the latter very feebly arcuate and scarcely more 

 so than the feebly arcuato-truncate apex; basal and apical angles almost 

 equally obtuse and rounded but both tolerably defined; disk rather strongly, 

 somewhat sparsely and unequally piinctate, the punctures coarser and sub- 

 asperate anteriorly and laterally; surface smooth, coarsely reto-rugose near the 

 sides; marginal fringe rather long, dense and even. Elytra distinctly wider 

 tlian the prothorax, about three-fourths longer than wide; narrowly parabolic 

 at apex; humeri prominent and tumid; punctures somewhat fine and close-set, 

 slightly rugose, the interspaces polished. Abdomen coarsely piiliescent, the 

 punctures fine and not very dense. Length 4.0 mm. ; width 1.5 mm. 



Utah. 



The single specimen serving as the type is a female. Castus is 

 allied to several Californian species, but is distinguishable quite 

 readih' by the form of the prothorax, and, from cylindricus'iw ad- 

 dition, by the very much longer and more conspicuous pubes- 

 cence. 



9. T. siniiosus n. sp. — Oblong, elongate, convex, black, polished, the 

 ujiper surface with a grayish-subaneous lustre; legs and antenna deep black 

 throughout; pubescence moderately long and coarse, not very dense but cin- 

 ereous and conspicuous. Head large, rather more than three-fourths as wide 

 as the prothorax, the eyes somewhat large but only moderately prominent; 

 punctures rather fine and sparse, gradually becoming closer and scabrous to- 

 ward the sides and base; frontal impressions feeble and elongate; labrum 

 short, broadly arcuate at apex ; antenna rather long and stout, slightly longer 

 than the prothorax, the fifth and sixth joints subequal and both somewhat 

 wider than the eighth, tenth strongly transverse. Prothorax large, about one- 

 half wider than long, the sides parallel but deeply sinuate just behind the api- 

 cal angles, and very broadly, feebly sinuate and ()blit(ue in basiil half, the sides 

 very broadly and sul)angularly swollen at the middle; ajjical angles laterally 

 but very obtusely jnominent, the basal obtuse but not rounded; apex broadly 

 subtruncate, becoming posteriorly oblique and broadly rounded at the sides; 



