708 Coleopterological Notices, VI. 



rounded, the tempora becoming parallel; eyes moderately large and prominent; 

 disk rather linely but strongly, elosely punctate, with a very -well defined 

 entire and somewhat narrow impunctate line; antennie slender, as long as the 

 head and jtrothorax, feebly incrassate, the tenth joint fully as long as wide. 

 Prothorax scarcely more than three-fourths as Avide as the head, somewhat 

 longer than wide, rounded at the sides anteriorly, finely, deeply, very densely 

 punctate. Elytra somewhat more than three-fourths longer than wide, twice 

 as wide as the prothorax, the sides parallel, evenly and feeblj' arcuate, the 

 apex not very broadly rounded; scutellar impression broad and distinct, the 

 omoplates almost obsolete; punctures strong and close, nioderatelj' coarse, very 

 much finer toward apex. Abdomen alutaeeous, minutely, extremely densely 

 punctate and finely reticulate, more shining and distinctly punctate toward 

 base. Le(/!< moderately short, slender, the femora minutely and densely punc- 

 tate. Length 2.9 mm.; width 0.8-0.9 mm. 



California (Mendocino, Humboldt, Lake and Sonoma Cos.). 



It is possible that there nia^- be some closely allied species in- 

 termingled in the large series before me, but they cannot be ad- 

 vantageously separated at present. This species is closely allied 

 io punctidatui< and is similar in the male sexual characters, but it 

 is somewhat more slender, with less elongate elytra, more finely 

 and much more densely punctate head and prothorax, the latter 

 relatively' narrower, and is never black, while of the numerous 

 specimens of punctulatus which I have taken, none are pale and 

 the two forms are never found in the same locality. 



The el3'tra are impressed along the sutural margin toward apex, 

 esiDecially in the male. 



A single female from Tahichipi Pass is associated with mer- 

 curialis for the present, but it almost certainly represents a dis- 

 tinct and decidedly stouter species. 



25. A. cei-TiiiUS Laf. — Mon., p. 181; Lee: Proc. Acad , Phila., 1852, p. 

 100. 



Rufo-ferruginous, feebly shining, strongl}-, very densely punc- 

 tate throughout, the punctures of the elytra not coarse ; elytra 

 with a transverse blackish fascia at the middle and another near 

 the apex, enclosing a large pale spot at apical third, the macula- 

 tion alwaj's more or less nubilato and frequently obsolete. 

 Length 2.2-2.7 mm. ; width 0.7-0. i)5 mm. 



Entire I'nited States east of the Rocky Mountains, from Idaho 

 (Ca'ur d'Alcnej to New York, Texas and Mississippi. This 

 species is so common and well known that further description 

 would be superfluous in this imperfect revision. 



