REVISION OF TUNEBRIONID SUBFAMILY CONIONTIN^ l55 



6 — Form nearly as in ciliatus but much smaller in size, blackish-cas- 



taneous to much paler piceo-testaceous, polished ; head similar 

 though less coarsely, densely punctured behind the suture and 

 more finely, rather more closely before the latter; prothorax simi- 

 lar in form and sculpture but somewhat more finely and densely 

 punctate toward the sides ; elytra similar in general form but 

 rather less coarsely and more closely punctato-muricate and still 

 more finely and closely granose posteriorly; under surface nearly 

 similar, the prosternal process equally strongly constricted. Length 

 4.8-5.8 mm. ; width 2.8-3.4 mm. San Francisco, — found bur- 

 rowing in loose sand on Blue Mt., near the ocean beach. 



debilis n. sp. 



Form very much more dilated than in either of the preceding, oblong- 

 oval, polished, black, the under surface and legs piceo-rufous, the 

 antennse yellow-brown ; head small, rough and punctate behind, 

 and at the sides before, the suture, subimpunctate medially before 

 the suture, the epistoma inuch less tumid medially than in ciliatus ; 

 prothorax shorter and more transverse, the sides more strongly 

 converging and more strongly arcuate from base to apex, the ante- 

 rior angles rather more deflexed and more rounded ; surface simi- 

 lar and almost similarly finely and remotely, though less unequally, 

 punctured ; elytra not longer than wide, not at all wider than the 

 prothorax, the sides feebly converging and feebly arcuate from the 

 base, rapidly and obtusely rovmded at apex, sculptured as in 

 ciliatus ; under surface nearly similar, except that the prosternal 

 process is less strongly constricted. Length 5.25 mm.; width 

 3.35 mm. Near San Francisco curtulus Csy. 



7 — Punctures of the pronotum unequally distributed, leaving large 



areas devoid of punctuation 8 



Punctures of the pronotum almost evenly distributed 9 



8 — Body rather broadly oblong-oval, polished, blackish, the elytra 



dark red-brown, the under surface and legs rufo-piceous, the 

 antenna paler and more flavate as usual ; head coarsely and 

 densely punctate behind and with a mixture of large and small 

 punctures, sparse medially before the suture, the entire basal region 

 impunctate, the epistoma moderately convex medially, flat later- 

 ally ; antennae gradually clavate distally as usual ; prothorax two 

 and one-half times as wide as long, the sides strongly converging 

 from base to apex and broadly axxuate, gradually more rounded 

 basally, the apical angles very evidently rounded ; surface sparsely 

 and very strongly, but not very coarsely punctured, the punctures 

 closer and mingled with some much coarser punctures laterally, 

 the sides not very widely declivo-explanate, the bead rather strong, 

 especially around the apical angles ; elytra scarcely at all longer 

 than wide, not at all wider than the prothorax, the sides parallel 

 and broadly arcuate, rounding to the obtuse apex in scarcely apical 

 two-fifths, the immediate tip sharply ogival as usual ; surface with 

 the usual strong, sparse and muricate punctures, becoming finer 



