Casey — Observations on the Staphylinidae. 167 



minute punctulation finer and sparser; antennae s'endcr, only very 

 slightly and gradually incras>ate dlstally, barely one-half longer than 

 the head, the stcoud joint as loug as the next two together, the tenth 

 three-fourths wider than long, the elt venth as long as the preceding 

 two combined, very obtustly pyriform, truncate at tip; prcthorax un- 

 usually elongate, only just visibly Wider than long, fully as wide as the 

 elytra, the sides raocierately converging from base to apex and f^'ebly ar- 

 cuate ; basal angles broadly rounded as usual, the median lobe of the base 

 strongly rounded; elytra short, the sides much shorter than the sides 

 of the prothorax, the suture two-thirds :is long as the median line, the 

 punctures very coarse and asperate but much less close-set than in 

 sulcicoUis, the flanks impunctate, narrowly at base, very broadly and 

 almost to the lower edge behind, with a few punctures just, behind the 

 humeri; discal punctures est< rually tending to form obl'que series; 

 abdomen slightly narrower thau the elytra, parallel, fiuelv, rather closely 

 punctate, somewhat broadly impunctiie along the middle; hind tarsi 

 fully as long as the tibiae, the basal jointnlmost a-* long as the next three 

 combined. Length 4.5 mm.; v^idtti 1.05 mm. California (S;in Diego). 



(lebilicorais n. sp. 

 Moderately slender and much smaller, convex, parallel, polished, black, the 

 elytra dark piceo-rnfous throughout, the legs and antennae pale brown- 

 ish red; head relatively large, three-fifths as wide as the prothorax or 

 more, with a few large scattered punctures, the antennae n^^arly as in 

 the preceding but somewhat more rapidly incrassate distaHy, the sec- 

 ond joint scarcely as long as the next two combined, the tenth twice as 

 wide as long, the eleventh more poimed ; prothorax fully as wide as the 

 elytra, scarcely a fifth wider than long, the sides only slightly converg- 

 ing from base to apex and distinctly arcuate, punctured nearly as in 

 the other species, except that the punctures near the base, just outside 

 of the sulci, tend to forma short transverse series, the minute punctula- 

 tion very fine, sparse and indistinct; elytra rather short, moderately 

 transverse, the sides equal in length to those of the prothorax, 

 the suture fully two-thirds as long as the median line, the punctures 

 very coarse and asperate but less close-set than in sxdcicollis and tend- 

 ing to form oblique series throuEhout, the upper part of the flanks im- 

 punctate except before the middle, very broadly so behind ; hind tarsi 

 even somewhat longer thau the tibiae but with the basal joint only as 

 long as the next two combined. Length 2.7-2.9 mm. ; width 0.65 mm. 

 California (San Diego) , cyliiulrella n. sp. 



The tendency of the coarse elytral punctures to range 

 themselves into oblique series in cylindrella and partially so 

 in dehilicornis, is a rather singular character; this tendency 

 is not so obvious in the first three species of the table, and, 

 where observable at all, the series are less oblique; the large 

 impunctate areas at the sides of the elytra are also a dis- 

 tinguishing feature as in many Xantholinids. 



