STAPHYLINID/E. 195 



thorax but only a little longer than wide, the punctures deep and rather 

 close but not so dense as in parcus; abdomen nearly similar, except 

 that the fine apical part of the male spicule is much more elongate or 

 less abruptly narrowed to form the slender apical prolongation. Length 



11.5 mm.; width 1.8 mm. Texas (Austin) texanus n. sp. 



Pronotum still more strongly shining, the interstitial spaces highly polished 



and never with more than a trace of fine punctulation 6 



6 Eyes only moderately convex, not notably prominent 7 



Eyes strongly convex, prominent 8 



7 Body larger and stouter, black, the elytra dark rufo-piceous, the abdomen 

 apically and the margins of the segments dull testaceous; head rather 

 well developed but not as wide as the prothorax, polished, remotely 

 and unevenly punctate as usual, piceo-rufous anteriorly; prothorax 

 as long as wide, the evidently converging sides from apex to base nearly 

 straight, the punctures sparse but not very large, deep and distinct; 

 elytra wider and much longer than the prothorax, evidently longer 

 than wide, with rather large and very deep close-set punctures; ab- 

 domen somewhat strongly, submuricately punctate; vestiture somewhat 

 long, palish. Length 10.5-12.0 mm.; width 1.7-1.82 mm. Texas 



(El Paso) trajectus n. sp. 



A Nearly as in trajectus but smaller and more slender, the head less 

 developed and rufous, becoming blackish only at base, the elytra 

 not more elongate, brighter rufous and with the punctures similarly 

 separated. Length 9.7 mm.; width 1.4 mm. Arizona (Tucson). 



pimalis n. subsp. 



Body smaller and more slender, otherwise as in trajectus, except that the 

 head is blackish only toward base, the sides of the prothorax more 

 arcuate and the strong deep punctures of the surface twice as numerous, 

 the elytra narrower and rather more elongate, black or nearly so and 

 with the strong deep punctures so close-set as to be almost contiguous. 

 Length 9.0-10.0 mm.; width 1.5-1.6 mm. Valley of the lower Colorado 



River (Yuma) densus Lee. 



8 Form nearly as in densus but larger, the eyes (cf) larger, as well as more 

 prominent, separated from the base by barely a third of their own 

 length; body deep black throughout, the front, mandibles and seventh 

 ventral pale; prothorax barely at all wider than the head, obtrape- 

 zoidal, strongly and closely punctate toward the median line, more 

 sparsely elsewhere, not quite so long as wide, the hairs coarse and dis- 

 tinct, the antero-lateral smooth spot well developed; elytra distinctly 

 wider and very much longer than the prothorax, evidently longer than 

 wide, parallel, with broadly arcuate sides, the punctures deep but not 

 very large, well separated, though forming transverse wavy rugulation 

 by anteriorly oblique illumination; abdomen not so strongly sculptured 

 as in densus and allies. Length 11.4 mm.; width 1.66 mm. Arizona 



(probably southern) arizonicus n. sp. 



Form nearly as in arizonicus but more elongate, the prothorax being rather 

 longer than wide, with the converging sides from apex to base much more 

 arcuate; head pale, gradually piceous-black basally; prothorax sculp- 

 tured as in arizonicus; elytra much wider and longer than the prothorax, 



