432 MEMOIRS ON THE COLEOPTERA 



Philonthus longiventris n. sp. Elongate and rather slender, subfusi- 

 form, shining, black, the prothorax barely visibly picescent, the elytra 

 with short gray hairs, sparser on the abdomen; legs rufo-piceous; head 

 small, oval, longer than wide, much narrower than the prothorax; an- 

 tennae nearly black throughout, not at all paler at base, somewhat longer 

 than the head and prothorax, the outer joints slightly longer than wide; 

 prothorax longer than wide, somewhat as in pumilio; elytra shorter than 

 wide, slightly shorter than the prothorax, at base slightly, at apex much, 

 wider than the latter; surface opaculate, very even, the punctures rather 

 close-set but small and not asperate; abdomen long, gradually attenuate 

 behind the middle, finely, closely punctate; anterior tarsi very slightly 

 dilated in the female. Length (9 ) 4.8 mm.; width 0.76 mm. Montana 

 (Mullan), Wickham. 



It seemed at first as though this might be the female of pumilio, 

 but closer observation shows that such relationship is impossible, 

 the size is larger, the antennae quite different, but, especially, the 

 elytra have a wholly different type of sculpture, the strong asperate 

 punctures of that species being absent. 



Philonthus lacustris n. sp. Body small in size, subparallel, shining, 

 very obscure reddish-brown, the head and abdomen black; legs flavo- 

 testaceous; antennae heavy, gradually and strongly incrassate, extending 

 almost to the middle of the elytra, blackish throughout, not paler at base, 

 the outer joints slightly longer than wide; head small, slightly elongate, 

 the eyes at three-fourths more than their own length from the base, the 

 tempora moderately converging and nearly straight, becoming arcuate and 

 more converging in nearly posterior half; prothorax as wide as long, 

 much wider than the head, circularly rounded at base and on the sides 

 basally, the sides thence strongly converging and nearly straight to the 

 apex; three punctures fine, the posterior more distant; scutellum rather 

 small; elytra well developed, shorter than wide and scarcely as long as 

 the prothorax, at base equal in width to the latter, at apex broader, the 

 combined apex rather strongly sinuate; punctures small, very close and 

 asperulate; abdomen parallel, narrowed slightly only apically, the punc- 

 tures fine, asperulate and rather close-set, the pubescence yellowish like 

 that of the elytra but sparser; sixth ventral (c?) with a small subangulate 

 sinus, two or three times as wide as deep, the adjacent surface deeply 

 impressed in very acute triangle: anterior tarsi very moderately dilated. 

 Length (cf) 4.5 mm.; width 0.9 mm. Minnesota (Duluth). Taken by 

 the writer last summer. 



While related to pumilio, this species differs in its slightly larger 

 size, relatively smaller prothorax, larger elytra and much heavier, 

 gradually more incrassate antennae; the male sexual characters at 

 the abdominal apex are almost similar. 



Philonthus convergens n. sp. Form moderately stout, more an- 

 teriorly attenuated, shining, paler red-brown in color, the head and ab- 



