STAPHYLINID^E. 147 



with a piceous cloud at the scutellum and at each outer posterior angle, the 

 abdomen black, feebly paler at tip, the legs pale; head slightly wider than 

 long, suborbicular, the eyes large, rather prominent and at their own length 

 from the base, the tempora forming an even circular arc from each eye to 

 the rather narrow neck, the carinae fine but strongly elevated and entire; 

 antennae rather short, pale, feebly infuscate distally and with the apical 

 joint still darker, the first and second equal in length, the third shorter but 

 very slender, the fourth a little longer than wide, the outer joints gradually 

 and moderately incrassate and transverse, the last acutely conoidal, as long 

 as the two preceding; prothorax rather transverse, convex, much wider at 

 base than at apex, the sides strongly converging and broadly arcuate, rounded 

 at base, much wider than the head and as wide as the elytral base, unim- 

 pressed; elytra large, only moderately abbreviated, with slightly diverging 

 sides, the suture one-half longer than the prothorax; abdomen strongly and 

 evenly tapering from base to apex, evidently narrower than the elytra, the 

 sexual characters not obvious. Length 1.65 mm.; width 0.48 mm. Colorado 

 (Colorado Springs), Wickham. 



A rather conspicuous species in outline, coloration and form of the 

 head. It is represented in my collection by a single specimen, 

 lacking the hind legs. 



Acrotona Thorns. 



The American forms agree very well with the European in a 

 generic sense, but they are probably all different specifically. 

 Achro'motafusiformis.Csy., belongs to this genus and has the elytra 

 rather well developed as in fnngi, but it is much stouter, with a 

 larger head and more rapidly tapering abdomen than any one of 

 the four European species that I have received from time to time 

 under the name fungi. 



Acrotona lividula n. sp. Stout, subparallel, convex, rather shining, 

 piceous-black, the head and abdomen black, the elytra dark castaneous, 

 the legs piceous-brown ; head convex, somewhat transverse, barely percep- 

 tibly swollen basally, the eyes at nearly their own length from the base; 

 antennae rather long, very slender, pale piceo-testaceous throughout, barely 

 at all incrassate, the first three joints much elongated, the third the shortest, 

 the succeeding joints also longer than wide, the tenth about as long as wide, 

 the last very slender, gradually and finely pointed and as long as the two 

 preceding; prothorax large, transverse, convex, minutely, sparsely, simply 

 punctulate, much wider than the head and as wide as the elytra, parallel and 

 broadly rounded at the sides, a little more so apically, not impressed; elytra 

 large, moderately transverse, not quite parallel, the suture fully a third longer 

 than the prothorax, finely, closely and asperulately punctate; abdomen at 

 base nearly as wide as the elytra, gradually distinctly tapering, with feebly 

 arcuate sides throughout. Length 1.9 mm.; width 0.65 mm. Oregon 

 (Portland). 



