252 
Psyche 
[December 
Length 1.8 to 2.4 mm.; width 1 to 1.3 mm. 
California — Elsinore Lake 8-22-17 (type); Pomona; San 
Diego; San Francisco. All collected by the writer. Although 
slightly less convex than most species of Horn’s category ‘‘13” 
this species by all essential characters belong there and should 
stand next to tristis, from which and all others of the group it 
differs by having the prothorax more noticeably alutaceous 
than the elytra. In one example from Pomona the alutaceous 
sculpture is equally developed over the entire surface. 
The species belonging to Horn’s category “13” (except the 
very distinct navicularis) may with advantage be retabulated as 
follows : 
Entire upper surface alupateous. 
Alutapeous sculpture equally developed on thorax and ely- 
tra; form shorter and more convex (Eastern U. S.).opacellus. 
Alutaceous sculpture as a rule a little more distinct on the 
thorax; size a little larger, form evidently less convex 
(California). calif ornicus. 
Head and thorax polished, elytra distinctly alutaceous. 
Elytral striae extremely finp, scarcely impressed, obsolete 
toward the apex tristis. 
Elytral striae entire. 
Elytral interspaces very finely to scarcely visibly putic- 
tulate. 
Striae fine luguhris. 
Striae much stronger suhsulcatus. 
Elytral interspaces distinctly punctate, striae well im- 
pressed. connivens. 
Entire surface shining and with at most but feeble traces of 
alutaceous sculpture on the elytra. 
Elytral apex with sharply defined pale area floridanus. 
Elytral apex at most only diffusely and obscurely paler, 
often scarcely at all so. 
Elytral striae fine, the interspaces much more finely 
punctate than the prothorax granarius. 
Elytral striae sharply and deeply impressed, the punc- 
tures of the interspaces nearly as coarse as those of 
the thorax minusculus. 
