Goleopterological Notices, VI. TO I 



teriorly to the somewhat dilated basal margin, the latter sub- 

 obsolete toward the middle. Elytra three-fourths longer than 

 wide, twice as wide as the prothorax, the sides parallel and dis- 

 tinctly arcuate, distinctly shorter and broader in the female ; 

 omoplates large and nearly obsolete ; punctures somewhat sparse 

 and rather coarse, gradually finer toward apex. Abdomen 

 strongly shining, though minutely and closely punctured and 

 pubescent. Length 3.5-3.7 mm.; width 1.25 ram. 



California (Santa Clara to Humboldt). Readily distinguish- 

 able from ovicollis by the larger, more anteriorly rounded pro- 

 thorax, denser punctuation of the head and some other characters. 

 The male has the fifth ventral but slightly longer than the fourtl;. 

 unmodified and very broadly rounded behind, the genital segment 

 coriaceous, large and wide, broadly arcuate throughout at apex 

 and with a small rounded indentation at the middle of the disk. 



Two of the specimens depart noticeably from the usual form 

 and represent, either aberrations, or structural varieties. The first 

 — taken in the valley of Redwood Creek, Humboldt Co., where the 

 normal form also occurred — has the punctures throughout much 

 coarser and sparser and the prothorax smaller, shorter, more 

 broadly rounded at the sides, and widest only a little before the 

 middle ; the second, a unique taken in Sonoma Co., has the punc- 

 tuation normal, but the prothorax is smaller, more broadly and 

 posteriorly rounded, and the head has a narrow but distinct and 

 entire impunctate line; they are both females. 



15. A. liastatus n. sp. — Moderately stout, convex and polished, black; 

 tibiae, tarsi and antenntc toward base, testaceous; elytra indelinately pale at 

 apex; pubescence coarse, somewhat sparse, moderate in length. Hcml quad- 

 rate, convex, strongly, rather sparsely punctate, without definite impunctate 

 line, the base broadly arcuato-truncate, not at all impressed; angles broadly 

 rounded, the tempora long; eyes moderate; antenna; as long as the head and 

 prothorax, becoming gradually' rather strongly incrassate, the tenth joint 

 s(:!arcely at all longer than wide. Piotliorax nearly as wide as tlie head, not 

 longer than wide, widest at apical third, where the sides are rounded, thence 

 arcuately narrowed to the basal margin; disk convex, somewhat iiuely but 

 strongly, rather sparsely ])unctured. Klijtra three-fourths longer tlian wide, 

 twice as wide as the prothorax, tlie sides iiarallel and almost evenly and dis- 

 tinctly arcuate; apex not ver^' broadly rounded ; humeri widely exjjosed; omo- 

 plates completely obsolete; punctures rather coarse and sparse. Abdomen pol- 

 ished, finely but only moderately closely punctured, the pubescence some- 

 what coarse, the legs rather short and stout; femora j>iceous. Length 2.rt- 

 3.0 mm. ; width 0.95-1.1 mm. 



