20
Memoirs on the Coleoptera.
California, which belong not only to the type of the two preceding species but closely resemble them, to such a degree in fact that it is scarcely worth while to describe them at present.
| Atheta iterans n. sp.—Rather dull, the abdomen more shining, not very stout, parallel, only moderately convex, piceous, the head black; elytra and legs more or less pale brownish; abdomen black, paler basally and at the apices of the first three segments; antennæ infuscate; pubescence very short, close, inconspicuous; head convex, not directly punctate, the eyes not prominent; carinæ fine and feeble but entire; antennæ moderate, subparallel, the outer joints distinctly wider than long; prothorax transverse. much wider than the head but only a little narrower than the elytra, widest before the middle, the sides straighter basally; median line finely and feebly impressed; elytra wider than long, distinctly longer than the prothorax, minutely, densely punctulate; abdomen much narrower than the elytra, parallel throughout, minutely, not closely punctulate, the first three tergites strongly impressed at base; mesosternal process triangular, finely aciculate but not much prolonged at apex, extending to beyond the middle of the coxæ, which are contiguescent, its tip far from the apex of the angulate metasternum; first four joints of the hind tarsi equal. Length 2.8 mm.; width 0.6 mm. New York (near the city). |
Distinguishable by the abdominal and sternal structure and the fine impressed median line of the pronotum. Sexual characters are not evident in the types. The fifth tergite is slightly longer than the fourth.
| Atheta enitescens n. sp.—Rather slender, moderately convex, strongly shining and minutely, sparsely punctulate, the short stiff vestiture not dense even on the elytra; body piceous-brown the head and abdomen black, the elytra slightly paler than the prothorax, the legs pale, the antennæ blackish; head well developed, the eyes rather prominent, at a little less than their own length from the base; carinæ fine but entire; antennæ rather long, gradually and feebly incrassate, the outer joints but slightly wider than long; prothorax distinctly wider than the head and correspondingly narrower than the elytra, two-fifths wider than long, the sides subparallel, broadly, evenly rounded, the basal angles much rounded; surface finely, feebly impressed along the median line; elytra slightly transverse, much longer than the prothorax, the asperate punctures distinct but not very close-set on the polished ground; abdomen much narrower than the elytra, parallel throughout, minutely, sparsely punctulate, the fifth tergite distinctly longer than the fourth; mesosternal process extending to apical fourth of the coxæ, drawn out but not very finely pointed, its tip separated by a long distance from the metasternum, which is extremely short and very broadly rounded; basal joint of the hind tarsi shorter than the second. Length 2.0 mm.; width 0.5 mm. New York (Ithaca). |
The male sexual characters of this small species are remarkably distinct, the sixth tergite being densely micro-reticulate and with
