STAPHYLINID^E 139 



distinct, the other two feeble, the fifth tergite one-half longer than the 

 fourth. Length 1.7 mm. ; width 0.28 mm. California (Sta. Rosa, Sonoma 

 Co., and Gilroy Hot Springs, Sta. Clara Co.). 



The long slender subfiliform antennae will distinguish this species 

 very readily from the next; it differs very much in general appearance 

 from the eastern caduca, due to the less prominent eyes, relatively 

 narrower elytra, as well as other characters of importance. 



Hydrosmecta fastidiosa n. sp. Very slender, feebly convex, rather 

 distinctly shining, the micro-reticulation feebler, large and polygonal on 

 the abdomen; punctures fine, asperulate and close-set, finer and rather 

 more separated on the abdomen; color piceous-black, the elytra and the 

 abdominal tip just visibly paler, the legs pale, piceous; vestiture very fine, 

 short and inconspicuous; head as long as wide, barely visibly narrower 

 than the prothorax, the eyes anterior, slightly prominent, at much more 

 than their own length from the base, the tempora gradually and but 

 just visibly swollen basally, the carinae wholly wanting; antennae uni- 

 form dark piceous-brown, very slender, scarcely at all incrassate, but little 

 longer than the head and prothorax, the second joint much longer than 

 the third, the fourth nearly as long as wide, shorter than five and following, 

 which are mutually subsimilar and about as long as wide, the last sub- 

 cylindric, as long as the two preceding; prothorax a fourth wider than 

 long, parallel, with moderately and subevenly rounded sides, the median 

 line rather widely impressed throughout; elytra parallel, nearly as long 

 as wide, a fourth wider and one-half long r than the prothorax; abdomen 

 long, slender, parallel, with straight sides, distinctly narrower than the 

 elytra, the fifth tergite nearly one-half longer than the fourth. Length 

 1.5 mm.; width 0.26 mm. California (Sta. Cruz, Sta. Cruz Co.). 



From benigna this species differs in its more slender form, notably 

 less convex surface and smaller and less prominent eyes; from 

 jugalis it differs also in its smaller eyes, smaller size and narrower 

 and less convex form; benigna differs very much from jugalis in 

 antennal structure and in its larger, more parallel and more trans- 

 verse prothorax, among other characters. 



Hydrosmecta salinasica n. sp. -Minute, parallel, feebly convex, dull 

 and minutely, closely and obscurely punctulate, the head more shining 

 and with more distinct punctures, the abdomen shining, extremely 

 minutely and sparsely punctulate; pubescence short, close, cinereous, 

 abundant and distinct, except on the head and abdomen where it is 

 sparse; color very dark and uniform piceous-brown, with pale legs, the 

 abdomen indefinitely blackish subposteriorly ; head nearly as long as 

 wide, just visibly narrower than the prothorax, theeyes slightly prominent, 

 at a little more than their own length from the base, the tempora par- 

 allel, somewhat swollen, evenly arcuate and rather more prominent 

 than the eyes; antennae slender, moderately long, just visibly incrassulate, 



