Goleopterological Notices, VI. 101 



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 ram. ; width 1.25 mm. 



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 slightl}^ longer than the fourth? 

 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 valle}^ 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 

 broadl}^ 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. hastatus n. sp. — Moderately stout, convex and polished, black; 

 tibiae, tarsi and antennae toward base, testaceous; elytra indetinately jmle at 

 apex; pubescence coarse, somewhat sparse, moderate in lengtb. Head 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; antenme as long as the head and 

 prothorax, becoming gradually rather strongly incrassate, the tenth joint 

 scarcely at all longer than wide. Prothorax nearly as wide iis the head, not 

 longer than wide, widest at apicid third, where the sides are rounded, thenee 

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

 strongly, rather sparsely punctured. Elijtra three-fourths longer than wide, 

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

 tinctly ai-cuate; apex not very broadly rounded ; humeri widely exposed; omo- 

 plates completely obsolete; punctures rather coarse and s])arse. Abdomen pol- 

 ished, finely but oulj' moderatelj' closely punctured, the pubescence some- 

 what coarse, the legs rather short and stout; femora piceous. Length 2.8- 

 3.0 mm. ; width 0.95-1.1 mm. 



