STAPHYLINID^E. 107 



narrower than the elytra, the fifth tergite scarcely so long as the fourth, 

 the sixth in the type rather narrowly sinuato-truncate at tip, with obtuse 

 angles. Length 2.3 mm.; width 0.6 mm. California (San Mateo), 

 Baker. 



The sex of the type is not determinate. The middle coxae are 

 moderately separated, the metasternum advancing moderately 

 between them, forming a subacute angle. 



Atheta morbosa n. sp. Moderately slight, not notably convex, piceous- 

 black throughout, the elytra barely at all paler, the legs pale; surface 

 but feebly shining, the anterior parts very uniformly, closely and asper- 

 ulately punctate, the abdomen sparsely, more shining and with the retic- 

 ulation rather strong, moderately small and in transverse wavy lines; 

 head moderately transverse, the eyes large, at much less than their own 

 length from the base, the tempora almost equally prominent, strongly 

 arcuate, converging basally, the carinae fine, not quite entire; antennae 

 rather long, gradually moderately incrassate, blackish throughout, the 

 second and third joints equal, fourth distinctly longer than wide, the outer 

 joints about one-half wider than long, the last ogivally pointed, rather 

 longer than the two preceding; prothorax nearly one-half wider than long, 

 parallel, the sides moderately arcuate, rather more so before than behind 

 the middle, unimpressed; elytra moderately transverse, a fourth wider 

 and two-fifths longer than the prothorax; abdomen parallel, much nar- 

 rower than the elytra, the fourth and fifth tergites equal, the sixth 

 tergite and ventral (9 ) broad and very broadly, feebly arcuate at apex. 

 Length 2.3 mm.; width 0.66 mm. California (Saucelito near San 

 Francisco). 



The metasternum is rather broadly, though distinctly, angulate 

 and the coxae moderately separated. This species may be known 

 by its even, close-set, asperate punctures and sombre coloration; 

 it seems to be a true Atheta like the preceding. 



Atheta audens n. sp. Moderately stout, rather small, moderately 

 convex and shining, the abdomen with fine sparse punctures, strongly 

 shining and with the minute sculpture almost obsolete, traceable in 

 transverse irregular wavy lines; punctures of the anterior parts fine, 

 rather close-set, feebly asperulate on the elytra; pubescence moderate, 

 palish; color black, the pronotum feebly picescent, the abdominal tip 

 and apical margins of the two or three basal tergites paler, the elytra 

 tawny, just visibly infumate about the scutellum and postero-externally, 

 the legs pale; head wider than long, fully two-thirds as wide as the pro- 

 thorax, the eyes prominent, at rather less than their own length from the 

 base, the tempora less prominent, broadly rounding and converging to 

 the base, the carinse fine, subentire; antennae moderately long and in- 

 crassate, black, slightly pale basally, the second and third joints equal, 

 not very elongate, each two-thirds as long as the first, fourth longer than 

 wide, fifth about as long as wide, the outer joints evidently transverse, 



