STAPHYLINID^E. 89 



Hydrosmecta jugalis n. sp. Coloration, sculpture and the inconspicuous 

 vestiture as in the preceding, the form more slender; head and carinae nearly 

 similar, the tempora similarly rather swollen but longer, the eyes smaller, 

 much shorter than the tempora; antennae similarly short and distinctly 

 incrassate but less strongly so, the outer joints distinctly less transverse; 

 prothorax similar, only very little wider than the head; elytra about as long 

 as wide, parallel, distinctly wider and very much longer than the prothorax, 

 parallel, nearly flat, the apices, as in all the preceding, without sinus near 

 the sides; abdomen at base nearly as wide as the elytra, at the apex of 

 the fifth tergite slightly wider than the elytra, the diverging sides perfectly 

 straight, the fifth tergite longer than the fourth; middle coxae contiguous, 

 the metasternal margin transverse; tarsi rather short, the first four joints 

 but slightly elongate and equal. Length 1.65 mm.; width 0.28 mm. Cali- 

 fornia (Booneville, Mendocino Co.). 



The peculiar form of the abdomen, increasing in width posteriorly 

 and widest at the apex of the fifth segment, will distinguish this 

 species very readily from the preceding, with which it is evidently 

 closely allied. 



The Hydrosmectina subtilior, of Bernhauer, is probably a Thec- 

 turota. 



The two following species are also appended and placed provi- 

 sionally in Hydrosmecta. 



Hydrosmecta subparilis n. sp. Rather feebly convex, alutaceous, black, 

 the abdomen most deeply so, the elytra blackish-piceous, the legs flavo- 

 piceous; punctures very minute and close-set, larger and asperate but not 

 so dense on the abdomen ; head nearly as long as wide, the eyes large, prom- 

 inent, at much less than their own length from the base, the tempora less 

 prominent, the carinae fine but nearly complete; antennae long, gradually 

 feebly incrassate, blackish throughout, the first three joints long, very slowly 

 decreasing in length, all the other joints longer than wide, except the tenth 

 which is as long as wide, the eleventh slender, as long as the two preceding; 

 prothorax only very moderately transverse, distinctly wider than the head 

 and evidently narrower than the elytral base, widest near apical third, 

 where the sides are rather strongly rounded, thence converging slightly 

 and straighter to the base, having a small transverse impression at base; 

 elytra but slightly wider than long, parallel, the suture fully one-half longer 

 than the prothorax; abdomen only a little narrower than the elytra, parallel, 

 asperately punctate to the tip, the fifth tergite a little longer than the fourth; 

 hind tarsi rather short, the first four joints subequal. Length 2.2 mm.; 

 width 0.43 mm. California (Booneville, Mendocino Co.). 



The sterna and middle coxae are obscured in the type by gum, 

 but the general facies and the antennas indicate that the species 

 belongs in this part of the Athetid series, though it is certainly not 

 a typical Hydiosmecta. 



