NORTH AMERICAN COLEOPTERA. 203 



equal, seven to ten very slightly decreasing in length, eleventh long and slen- 

 der, attenuate; apices of joints three to ten obliquely truncate. Prothorax 

 twice as wide as the head; apex throughout the breadth of the latter broadly, 

 roundly emargiuate; apical angles thence very broadly rounded, coarctate with 

 the sides which become nearly straight and shghtly divergent to within a 

 short distance of the base, where they become abruptly slightly convergent 

 and nearly straight to the basal angles; the latter obtuse and scarcely round- 

 ed; base broadly and stiongly arcuate in the middle, sinuate laterally; disk 

 twice as wide as long, depressed in the middle, very broadly and strongly re- 

 flexed at the sides, extremely feebly reliexed anterior!}', more strongly and 

 broadly so along the arcuate portion of the base, also more strongly im- 

 pressed at the sides and toward the apical angles, very minutely subgranulose 

 with evenly distributed, not dense, fine, grauulose or strongly asperate punc- 

 tures. Elytra as wide as the prothorax; sides nearly parallel, feebly arcuate; 

 apex broadly truncate, feebly sinuate laterally; inner angles distinctly round- 

 ed; humeri rather broadly rounded; disk nearly two-thirds wider than long, 

 one-third longer than the pronotum, feebly convex, more strongly so toward 

 the humeri; base feebly declivous, finely, feebly subgranulose, finely, rather 

 sparsely granulosely punctate; punctures more distinct than those of the 

 pronotum; suture margined with a fine, polished but not distinctly elevated 

 line which extends along the scutellum and base. Ahdomeii as wide as the 

 elytra; sides nearly straight and j^arallel; broadly, obtusely rounded behind; 

 surface strongly impressed in the basal half, broadlj', feebly convex behind; 

 lateral tufts of hair bright fulvous; under surface strongly convex, having very 

 sparsely placed, erect selas. Legs long and slender; tarsi_ cylindrical; first 

 joint of the posterior longer than the next two together, one-third longer than 

 the fifth. Length 4.3 mm. 



California; (Truckee, Nevada Co. 1). Elevation 6,000 

 feet. 



A very interesting addition to the fauna of California; 

 the typical representative was found under a stone deeply 

 imbedded in soft soil near the margin of a small stream; no 

 ants of any description could be seen, and in fact myrmeco- 

 philous Coleoptera of all kinds appear to be extremely rare on 

 the Pacific Coast. 



TACHYUSA Erichs. 



T. crebrepunctata ^- sp. — Kather slender, moderately convex, black 

 throughout; antennae and legs same; tarsi and palpi paler, piceo-testaceous; 

 pubescence short, fine, dense and recumbent, coarser, longer and more 

 sparse on the abdomen; integuments shining, finely, deeply', evenly and 

 very densely punctate, head and abdomen slightly more coarsely and sparsely 



