n8 MEMOIRS ON THE COLEOPTERA 



as long as the transverse distance separating the coxae; basal joint of the 

 hind tarsi not so long as the second. Length 2.0 mm.; width 0.63 mm. 

 California (Gilroy Hot Springs, Sta. Clara Co.). 



Distinguishable by the rather small size, stout form, relatively 

 small head and prothorax and by the sternal characters. 



Subgenus Traumoecia Rey. 



The two following species apparently belong here, having a 

 similar habitus and structure of the intermesocoxal parts: 



Atheta (Traumoecia) militaris n. sp. Slender, subparallel, shining, 

 the head and abdomen deep black, the pronotum and elytra very dark, 

 blackish-piceous, the latter scarcely at all the paler, the legs piceous with 

 the tarsi paler; punctures very fine, not dense, scarcely asperate, sparse 

 on the abdomen, where the micro-reticulation is notably large, distinct 

 and polygonal; pubescence rather sparse and fine, somewhat long though 

 inconspicuous; head large, wider than long, fully four-fifths as wide as 

 the prothorax, the eyes large and prominent, at three-fourths their 

 length from the base, the tempora equally prominent, parallel and feebly 

 arcuate, the carinae very fine and feeble, subentire; antennae dark piceous, 

 moderately long, gradually and evidently incrassate, the third joint 

 slender, slightly shorter and thinner than the second, the fourth as long 

 as wide, fifth evidently, the outer joints rather strongly, transverse, the 

 tenth longer than the ninth, the last oval, very obtuse, as long as the two 

 preceding; prothorax moderate, convex, two-fifths wider than long, the 

 sides broadly arcuate, feebly converging and straighter posteriorly from 

 near apical third, the basal angles rounded, the median line very feebly 

 impressed throughout; elytra well developed, with straight and diverging 

 sides, only slightly shorter than wide, truncate externally at apex, at 

 base a fourth wider, the suture two-fifths longer, than the prothorax; 

 abdomen much narrower than the elytra, with perfectly straight and 

 parallel sides and rather thin margins, the fourth and fifth tergites equal; 

 metasternal projection large, almost equilatero-triangular, the coxae 

 slightly separated; first four joints of the hind tarsi equal. Length 1.8 

 mm.; width 0.45 mm. Alaska (Fort Wrangel), Wickham. 



There are no apparent signs denoting sex in the type and the 

 species differs from those previously described in its much darker 

 coloration, among other characters. 



Atheta (Traumoecia) tenuicula n. sp. Subparallel, like the preceding 

 in its shining surface, fine loose punctures and large abdominal reticu- 

 lation, which is here a little more transversely polygonal; color deep black 

 throughout, the elytra barely visibly paler, piceous-black, the legs piceous; 

 head well developed, only very little wider than long, the eyes large 

 and prominent, at three-fourths their length from the base, the tempora 

 not quite so prominent, parallel, then broadly rounding to the base, the 

 carinae extremely fine, not quite entire; antennae rather short, deep black 



