230 AMERICAN COLEOPTERA. 



tlie third. Prothorax about one-tenth longer than wide, finely, simply punctate 

 throughout, the punctures separated by about their own diameters laterally, 

 scarcely finer and separated by from one to three times their diameters at mid- 

 dle; median line vaguely impressed throughout, hind angles not distinctly oari- 

 nate. Terminal joint of maxillary palpi more slender than usual, the arcuately 

 oblique apical edge much shorter than the inner side. Third and fourth tarsal 

 joints with narrow feeble lobes. Length 10 mm. ; width 2.5 mm. 



Oregon (Medford) ; one example, apparently a male. 



A second specimen from Humboldt Co., California (Van Dyke), 

 is paler in color and more slendei% but agrees otherwise. In all the 

 other species of the genus examined by me the oblique apical edge 

 of the last joint of the maxillary palpi is as long as or even longer 

 than the inner side. 



Athoiis discors n. sp. — Slender, blackish, legs piceous to rufous, elytra 

 moderately shining, prothorax dull from the density of the punctuation ; pubes- 

 cence fusco-cinereous, well developed. Antennae rather stout, the terminal joint 

 passing the hind angles of the prothorax, second and third joints small, equal in 

 width, the latter only slightly longer; fourth joint much longer and wider than 

 the third. Front broadly concave, the apical margin not distinctly reflexed, sur- 

 face densely deeply punctate. Prothorax a little longer than wide, slightly nar- 

 rowed in front, sides very feebly arcuate behind the middle, nearly straight 

 anteriorly; hind angles not carinate; surface densely, moderately, coarsely 

 punctate throughout, median line vaguely impressed posteriorly. Elytral striae 

 well impressed, interspaces numerously quite strongly punctate. Beneath punc- 

 tate and pubescent as usual ; first joint of hind tarsi equal to the next two; sec- 

 ond and third joints without trace of lobes. Length 8-9 mm. 



Southern California (Pomona; Mt. Wilson; Santa Monica). 



A small dull blackish species, not at all closely allied to any other 

 known to me. In its less strongly projecting non reflexed frontal 

 margin it diverges from the typical Athoiis and approaches rather 

 closely those species of Corymbites (e. g. joculus and hreiceri), in 

 which, contrary to the prevailing form, the front has a free, acute, 

 though narrow, margin above the labrum. The difficulty of draw- 

 ing hard and fast lines between the genera Athoiis, Corymhites and 

 Hemicrepidius (Asaphes) is becoming more apparent with the dis- 

 covery of new forms, and as intimated by LeConte it may become 

 necessary to unite these into a single genus. 



Athoiis agriotoides n. sp. — Moderately slender, head and prothorax 

 piceous, the latter with the marginal bead and hind angles pale; elytra reddish- 

 brown, lower surface in great part piceous, legs and base of antennae paler; pu- 

 bescence semi-erect, plentiful, ochreo-cinereous ; surface rather feebly shining. 

 Antenuae surpassing by two joints the hind angles of the prothorax, second joint 

 a little less than half the length of the third, the latter slightly shorter than the 



