442 CASEY 



of the epistoma. The genus is apparently very restricted in 

 habitat, neither of the species now known occurring far from 

 San Diego in California ; the two represented in my cabinet may 

 be defined as follows : — 



Form stout, suboval, convex, polished, glabrous, black or piceous- 

 black, rather paler beneath, the legs and antennae ruf o-piceous ; 

 head rather small, much narrower than the prothorax, strongly, 

 moderately coarsely and not very densely punctate, the punctures 

 tending to coalesce longitudinally; eyes rather small, extremely 

 convex and prominent; prothorax transverse, not quite twice as 

 wide as long, parallel, widest at the middle, the sides evenly 

 arcuate, the apex broadly sinuate, with the angles scarcely less 

 than right, not rounded but not prominent, the basal angles ob- 

 tuse though scarcely rounded, the surface strongly convex, deeply, 

 closely punctate, the punctures elongate, small and not dense 

 medially but coarser, dense and somewhat longitudinally coales- 

 cent laterally; scutellum small, transverse, extending but little 

 behind the elevated basal margin of the el3'tra, the latter oval, 

 inflated, about a fourth longer than wide, the sides more strongly 

 rounding toward base, more than three times as long as the pro- 

 thorax and, at the middle, fully three-fourths wider, not very 

 coarsely or deeply, sparsely punctate, the punctures arranged 

 in feebly defined series, with confusedly and almost equally 

 strongly punctate intervals, the punctures obsolete in about apical 

 fourth; abdomen smooth, almost impunctate except the basal 

 segment, the latter (d^) with a large and somewhat oval central 

 pubescent fovea. Length 3.2-4.1 mm.; width 1.7-2.2 mm. 

 California (San Diego). \j=Stibia ovzpenftis Horn]. 



ovipennis Horn 



Form less stout, convex, shining, glabrous, pale piceo-testaceous in 

 color; head small, rounded, rather finely, closely strigilato-punc- 

 tate, the eyes larger than in ovipennis and much less convex, 

 although prominent; prothorax almost similar in form but rela- 

 tively somewhat smaller and less transverse, more finely, not very 

 densely strigilato-punctate, but little more coarsely so laterally 

 and subevenly throughout; scutellum similar; elvtra more elon- 

 gate-oval, a third longer than wide, about two-thirds wider than 

 the prothorax, sparsely and not coarsely, shallowly punctate, the 

 punctures arranged in unimpressed series, obsolete in about apical 

 two-fifths, the intervals similarly and uniseriately punctate ; ab- 

 domen very minutely, sparsely punctate, the basal segment (cJ*) 

 with a large oval pale-pubescent fovea ; basal joint of the anterior 

 tarsi shorter than in ovipennis and much shorter than the next 

 two combined, the legs more slender. Length 3.2-3.8 mm. ; 

 width 1. 4-1. 8 mm. California (San Diego). [= Stibia mari- 

 tima Csy .] maritimus Csy . 



The differences between these two species in the eyes and 



