148 MEMOIRS ON THE COLEOPTERA. 



Differs horn fungi in its stouter form, larger head, more slender, 

 less incrassulate and paler antennae, more prominent eyes and many 

 other featuies. 



Acrotona digesta n. sp. Similar in general form and coloration but much 

 less stout, convex, shining, the pronotal punctures fine, twice as close as in 

 lividula and more asperulate, close and asperate on the elytra; head trans- 

 verse, the eyes prominent, at a little less than their own length from the base, 

 the tempora not more prominent, parallel to the basal curvature; antennae 

 rather long, feebly incrassate, piceous, gradually pale basally, the third joint 

 but little shorter than the second, the tenth distinctly wider than long, the 

 last ogivally pointed, barely as long as the two preceding; prothorax nearly 

 as in the preceding but having a small basal impression; elytra very much 

 shorter, strongly transverse, the suture almost, but not quite, as long as the 

 prothorax; abdomen nearly as wide as the elytra, more parallel than in 

 the preceding, tapering a little apically. Length 1.85 mm.; width 0.57 mm. 

 California (Duncan's Mills, Sonoma Co.). 



Very different from lividula in its more incrassate antennae and 

 shorter elytra. 



Acrotona shastanica n. sp. Still more slender, rather shining, black, the 

 elytra scarcely perceptibly picescent, the legs brown, the fine punctures 

 nearly as in the preceding, the pubescence pale and decumbent but rather 

 long and coarse; head very convex, rather small, moderately transverse, 

 the eyes noticeably small, at fully their own length from the base, the tempora 

 not more prominent; antennae piceous, gradually pale basally, only moder- 

 ately long and very evidently incrassate, the first three joints elongate, gradu- 

 ally diminishing, the outer joints a little wider than long, the last pointed 

 and as long as the two preceding; prothorax large, transverse, parallel and 

 rounded at the sides, very much wider than the head and distinctly wider 

 than any part of the elytra, virtually unimpressed; elytra subparallel, small, 

 rather short, the suture about four-fifths as long as the prothorax; abdomen 

 a little narrower than the elytra, slightly narrowed apicaliy, parallel basally. 

 Length 1.77 mm.; width 0.52 mm. California (Siskiyou Co.). 



Distinguishable from the two preceding by the inflated prothorax, 

 which is much wider than any part of the relatively diminished 

 elytra. 



Acrotona severa n. sp. Very stout, parallel and distinctly convex, shining, 

 deep black throughout, the elytra not paler, the legs dark brown; punctures 

 fine and inconspicuous, closer and asperate on the elytra, the vestiture rather 

 fine and dark; head large, transverse, the tempora slightly dilated and more 

 prominent though shorter than the eyes; antennae moderately long, very 

 evidently and rather rapidly incrassate apically, blackish, scarcely paler 

 basally, the first joint unusually stout, scarcely as long as the second, the 

 latter a little longer than the third, both very slender, four to six a little 

 longer than wide, the tenth evidently transverse, the last pointed, about as 



