NORTH AMERICAN COLEOPTERA. 225 



arcuate, margin narrow, slightly thickened at the front angles, disc convex, 

 ante-basal impression broad, shallow and indistinct at middle, a little deeper 

 near the sides, then gradually evanescent, surfiice alutaceous, subopaque, sparsely 

 punctuhite, punctures a little coarser near the front angles. Elytra wider than 

 the thorax, humeri rounded, umboue moderate, a slight impression within it, 

 surface subopaque, alutaceous, finely and moderately closely punctate, so as to 

 appear somewhat scabrous. Body beneath more shining than above, very sparsely 

 punctate. Length .12 — .14 inch. ; 3 — 3.5 mm. 



The last ventral of male ha.s a slight sinuation each side, the mid- 

 dle lobe short, flat and with a median smooth space. 



This species is also similar in form to ignita, but differs in the 

 ante-basal groove of the thorax and the style of surface sculpture. 



Occurs in California and Oregon. 



11. H. oboliua Lee. — Oval, slightly oblong, narrower in front, not very 

 convex, brilliant cupreo-feneous. Anteunse brownish, half as long as the body, 

 joints 2-3-4 gradually longer. Head smooth, a few coarse punctures in a depres- 

 sion near the eyes, frontal carina moderate, the tubercles not separated by the 

 usual median line. Thorax more than half wider than long, narrowed in front, 

 sides regularly arcuate, margin narrow, a little thickened at tlie front angle ; 

 disc convex, ante-basal line broadly impressed and shallow, gradually evanes 

 cent, surface shining, sparsely finely punctate. Elytra a little wider at base than 

 the thorax, humeri obliquely rounded, nmbone scarcely prominent, surface 

 shining, punctuation moderately coarse, but not close, with finer punctures in- 

 termixed. Body beneath colored as above; abdomen with coarse, sparse punc- 

 tures. Length .12— .14 inch. ; 3—3.5 mm. 



The six specimens before me are all females. This species has 

 quite the form and facies of the more brilliant forms of ignita, and 

 the elytral punctuation is similar, except that in ignita the interme- 

 diate flner punctures have not been observed. The entire form of 

 obolina is broader than in aincena, although not very diflferent from 

 reruginosa, which has a different color and surface sculpture. 



Occurs in northern California and Nevada. 



12. H. anioena n. sp.— Oblong oval, moderately convex, cupreo-feneous, 

 shining. Antennte slightlj^ longer than the body, fuscous, joints 2-3-4 gradually 

 longer. Head smooth, frontal carina moderately prominent, tubercles distinct, 

 oblong. Thorax one third wider than long, distinctly narrowed in front, sides 

 arcuate, margin narrow, distinctly tliickened near the front angles, disc convex, 

 ante-basal impression sharply defined, but gradually evanescent at its extremities, 

 surface shining, not visibly punctulate. except with very high power. Elytra a 

 little wider than the thorax, humeri obliquely rounded, umbone feeble, surface 

 very finely alutaceous, relatively coarsely, but not closely punctate, the punctures 

 at apex nearly as coarse as at base. Body beneath colored as above; abdomen 

 moderately closely punctate. Length .12 inch. ; 3 mm. 



TRANS. AM. ENT. .SOC. XVI (29) JUNE, 1889. 



