166 THE CANADIAN ENTOMOLOGIST 



front and clypeus subimpunctate. Prothorax two-fifths wider than 

 long, disk between the broad impunctate grooves much longer than 

 wide, feebly convex, uniformly rather finely, not closely punctate, 

 each puncture bearing a short, coarse hair; lateral area divided by 

 a deep, transverse sulcus at basal third, the posterior portion 

 globosely convex, rufo-piceous, glabrous, polished, with fringe of 

 hairs along its outer margin; anterior portion slightly narrower 

 than the posterior, of the usual flattened or slightly concave form, 

 sides nearly parallel behind the oblicjue, apical truncature, surface 

 rather coarsely, closely punctate and pubescent, the hairs becoming 

 denser, longer and recurved along the posterior margin. Elytra 

 slightly wider than the prothorax, one-fifth wider than long, sides 

 feebly arcuate and just visibly converging posteriorly; subhumeral 

 stria two-thirds the length of the elytra, first dorsal nearly attaining 

 the apex, second dorsal three-fourths, and third dorsal two-thirds 

 the length of the elytra, a!I the stria? externally finely cariniform, 

 punctuaticn fairly close, nearly uniform throughout, hairs short 

 and plumose basally, becoming longer and simple apically where 

 they are intermixed with still longer, sparse, recurved hairs which 

 occur also along the lateral margins. Prcpygidium and pygidium 

 sparsely uniformly punctured and sctcse, the pygidium becoming 

 smooth at apex. Presternum nearly ilct at summ.it, stria sinuate 

 between the coxa?, arcuately convergent Init not meeting at apical 

 third, interstitial surface nearly smccth posteriorly, becoming 

 closely punctate in front, densely so at apex; sides of prothorax 

 beneath impunctate, num.erously punctate in front of the coxa^, 

 meso- and metasternum smccth. Legs moderately long, the 

 femora and tibia? sparsely, finely punctate, the latter flattened and 

 expanded as in the allied species. Length (type) 2.25 mm.; width 

 L5 mm.; the size practically constant in all examples seen. 



Taken at Pasadena, California, October to March, under 

 stones with Formica pilicornis. This species is similar to tristriatiis 

 in a general way, but with elytral striae nearly as in morsiis, judging 

 from the description of the latter. It is virtually of the same size 

 as tristriatiis, possibly slightly smaller, and evidently narrower. 

 The cariniform margins of the first and third dorsal stria?, which 

 in tristriatiis are densely squamcse throughout their lengths are 

 here not appreciably m^ore densely clothed except near the base 

 of the third stria. 



