STAPHYLINID.E 209 



two and thicker, second as long as the third and fourth, the former evenly 

 obconic, the latter transverse and short, the tenth three-fourths wider 

 than long, the last ogival, as long as the two preceding; prothorax and 

 elytra finely, simply, not densely punctate, the former a third wider than 

 long, widest at apex, the sides thence slightly converging and very feebly 

 arcuate to the obtuse and blunt basal angles, the median line feebly and 

 equally impressed throughout; elytra fully as long as wide, with feebly 

 diverging sides, just visibly wider, the suture a fourth longer, than the 

 prothorax; abdomen at base narrower than the elytra, the perfectly 

 straight sides sensibly diverging thence to the tip of the fifth tergite, 

 where it is wider than the elytra, the first four tergites impressed at base 

 though rather finely. Length i.i mm.; width 0.2 mm. Texas (Austin 

 and Waco). 



Allied to capita, from the coast regions of Texas, but differing 

 in the broader and more closely sculptured head, with the middle 

 of the front much less impressed, in its much less transverse pro- 

 thorax and relatively shorter elytra; the abdomen is pallescent at 

 tip and its peculiar form is scarcely suggested in capita; sexual 

 characters are not apparent. 



Thecturota fracta n. sp. Still more slender, shining, pale in color, 

 the head and abdomen more piceous; punctures throughout very fine, 

 moderately close, narrowly parted along the middle on the head, the 

 pubescence scant, moderately long and pale; head subparallel, longer 

 than wide, distinctly wider than the prothorax, not strongly sculptured, 

 shining, broadly rounded at base, the sides nearly straight, the eyes very 

 small and anterior, prominent, the front with a short canaliculation 

 just before the middle; antennae nearly as in the preceding, pale, feebly 

 infumate distally, the third joint abruptly constricted at base, slightly 

 longer than wide; prothorax but slightly wider than long, otherwise 

 nearly as in the preceding, the median line very finely impressed, rather 

 more distinctly toward base; elytra as long as wide, nearly a fourth wider 

 and about a fourth longer than the prothorax, the apices transversely 

 subarcuate laterally as usual; abdomen nearly as in laticeps, though at 

 apex scarcely visibly wider than at base and barely as wide as the elytra, 

 the fifth tergite rather longer than the fourth. Length i.o mm.; width 

 0.17 mm. Arizona (Tucson). 



Distinguishable readily from the preceding by its more slender 

 form, more elongate head, much smaller and still less transverse 

 prothorax and paler coloration, probably as a normal condition, 

 although laticeps is frequently as pale but doubtless from immaturity 

 in great part. 



Thecturota nevadica n. sp. General form and sculpture nearly as 

 in The preceding, the color darker throughout and the punctures closer, 

 the pubescence shorter and inconspicuous, directed obliquely outward 



T. L. Casey, Mem. Col. II, August 1911. 



