Dec., '09] ENTOMOLOGICAL NEWS 419 



Head much narrower than the prothorax, transverse; extremely 

 densely and extremely finely punctate ; eyes large, tempora short, genae 

 entirely margined. 



Prothorax almost as wide as the elytra, strongly transverse, about 

 two-thirds wider than long, narrower in front than behind ; sides and 

 base rounded, the latter at the sides sinuate, hind angles obtuse; con- 

 vex, with a faint transverse basal depression extremely densely and 

 very finely punctate. 



Elytra considerably longer than the prothorax, hind angles strongly 

 emarginate; extremely densely and finely, somewhat roughly punctate. 

 Abdomen subparallel ; segments 3-5 transversely impressed at base ; 

 rather densely, not finely punctate. 



In the male the 7 dorsal segment of the abdomen in the middle very- 

 near to the apex with a scarcely visible small tubercle ; 8 dorsal seg- 

 ment at apex truncate, with 4-5 rather prominent teeth in the middle, 

 at each side with another, more prominent, longer tooth. 

 Length, 2.2-2.4 mm. 



Tahoe City, Deer Park Springs, Tallac, in California, on 

 mushrooms and toadstools. 



3. Atheta (Halobrectha) algophila spec. nov. 



Moderately elongate, moderately depressed, almost parallel. 



Piceous black, moderately shining, abdomen a little more shining, 

 elytra and apex of abdomen sometimes a little lighter; antennae 

 reddish brown, the first three or six joints, mouth and legs lighter, 

 reddish yellow. 



Antennae moderately long, longer than head and prothorax together, 

 moderately pubescent and setulose ; joints n 2 and 3 elongate, 2 longer 

 than 3; 4 and 5 longer than wide, 4-10 gradually a little shorter and 

 wider, the penultimate joints one-half wider than long; n not quite 

 as long as 9 and 10 together, oval, with blunt apex. 



Head a little narrower than the prothorax, longer than wide, round- 

 ed, with prominent mandibles; coarsely and moderately densely punc- 

 tate, with an impunctate middle area ; with sparse yellowish pubes- 

 cence ; eyes rather small, almost shorter than the tempora; genae en- 

 tirely margined. 



Prothorax narrower than the elytra, about one-third wider than 

 long, sides conspicuously rounded, narrowed behind, hind angles ob 

 tuse, moderately densely and finely punctate, with sparse yrllmv pubes- 

 cence ; with a shallow transverse basal foveola and two side bristles. 



Elytra wider and about one-third longer than the prothorax, together 

 almost longer than wide, almost parallel; outer hind angles conspicu- 

 ously emarginate ; densely and finely punctate, with moderately sparse, 

 conspicuous yellowish pubescence. 



