Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/68

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Memoirs on the Coleoptera.

rather coarse; head nearly as long as wide, the eyes well developed, rather convex, only a little shorter and just visibly less prominent than the tempora; antennæ fuscous, moderately incrassate, rather short, the outer joints mutually similar, transverse, the last obtusely ogival, barely as long as the two preceding, the second longer than the third; prothorax nearly as in alamedana in form and relationship with the head and elytra, but with the basal angles less evident, the impression obsolete; elytra rather large, shorter than wide, much longer than the prothorax, the apices not sinuate; abdomen rather wide though evidently narrower than the elytra, short, parallel, with feebly arcuate sides, the tergites equal; sterna nearly as in alamedana, except that the metasternum is much shorter and broader, broadly parabolic; basal joint of the hind tarsi longer, thicker and darker in color than two to four, which are equal. Length 1.6 mm.; width 0.42 mm. California (San Mateo),—Baker.

The general form and coloration of this species is not unlike alamedana, but the tarsi are of peculiar structure and the metasternal projection quite different.

Atheta (Nemota) properans n. sp.—Dark and uniform piceous-brown, the abdomen more blackish, alutaceous in lustre, finely and densely punctulate, the abdomen with the coarse reticulation almost obsolete, its surface polished and with numerous asperulate punctules; pubescence abundant, short, dark ashy; head well developed, rather transverse, broadening basally, the eyes rather convex and less prominent though barely as long as the tempora, the carinæ fine, far from entire; antennæ short but rather slender, dark brown, only very feebly incrassate, the outer joints but slightly transverse, the last rather obtuse, the second longer than the third, though much shorter than the next two combined; prothorax moderately transverse, much wider than the head and correspondingly much narrower than the elytra, the parallel sides somewhat strongly, evenly arcuate, the basal angles obtuse and blunt but rather evident; basal impression small, rounded, feeble though clearly defined; elytra moderately transverse, much longer than the prothorax, the apices distinctly sinuate externally; abdomen much narrower than the elytra, feebly narrowing and with nearly straight sides throughout; hind tarsi and sterna nearly as in alamedana but with the basal joint of the former sensibly shorter than the second. Length 1.85 mm.; width 0.42 mm. California (Hydesville, Valley of Eel River, Humboldt Co.).

Distinct from any of the preceding in lustre, sculpture and situation of the elytral apices.

Atheta (Nemota) repens n. sp.—Rather more elongate than any of the preceding, slightly shining, the reticulation fine but distinct, feeble and somewhat transversely disposed on the still more shining abdomen, the punctures very fine, not dense, slightly close and feebly asperulate on the elytra, very sparse and feeble on the abdomen; color blackish-piceous, the head and abdomen black, the elytra a little paler though rather dark piceous, the legs blackish-piceous; head wider than long, parallel, the eyes moderately convex, as long and about as prominent as the tempora, the carinæ extending