84 MEMOIRS ON THE COLEOPTERA. 



short and transverse, a fourth wider than the head, rounded at base, 

 the sides parallel and feebly arcuate, becoming gradually more arcuate 

 and converging anteriorly; elytra large, not quite as long as wide, very 

 slightly wider, the suture one-half longer, than the prothorax; abdomen 

 as in achromata, except that the sixth tergite (cf 1 ) is rectilinearly truncate, 

 the truncature only very feebly subcrenulate and the lateral angles marked, 

 not by long processes, but simply by flat angulation which scarcely 

 extends posteriorly further than the truncature; mesosternal parts 

 nearly as in the two preceding; basal joint of the hind tarsi almost as 

 long as two, three or four, which are equal. Length 2.4-2.6 mm.; width 

 0.65-0.7 mm. British Columbia (Metlakatla), Keen. 



The head in the male is broadly and moderately concave almost 

 throughout the upper surface, the pronotum with a large concavity 

 from apex to base, in rather more than median third. 



Subgenus Delphota Csy. 



The species of this subgenus have a peculiar parallel form of 

 body, rather close-set punctures and pubescence and some other 

 features that recall such groups as Stethusa and Metaxya, but they 

 are less elongate, have an aciculate mesosternal process and slightly 

 separated middle coxae, and are evidently to be included as a part 

 of Atheta in its narrower sense. The following six species are to be 

 listed, in addition to the one named cephalina in my previous paper 

 and which is represented at present by the single male type: 



Atheta (Delphota) lymphatica n. sp. Parallel, moderately stout, some- 

 what shining, the elytra more and the abdomen most strongly so, the 

 micro-reticulation fine and rather strong anteriorly, coarser and more 

 feeble on the elytra and abdomen, rather transverse in form but not 

 strigilate on the latter; punctures fine, rather close and asperulate; pu- 

 bescence pale, short, rather coarse; color blackish-piceous, the head and 

 abdomen black, the elytra brown, the legs pale; head well developed, 

 transverse, parallel, the eyes slightly convex, at less than their own length 

 from the base, the tempora almost equally prominent, straight and paral- 

 lel, then rounding into the base, the carinse fine, far from entire; antennae 

 moderately long, black, palish basally, strongly incrassate, the third joint 

 slightly longer than the second, fourth as long as wide, fifth a fourth, 

 the tenth one-half, wider than long, the last gradually pointed from near 

 the base and longer than the two preceding; prothorax large, one-half 

 wider than long, two-fifths wider than the head, parallel, with feebly 

 arcuate sides, which become more rounded and converging apically; 

 elytra large, subquadrate, but little widest at apex and only a little 

 shorter than wide, just visibly wider, the suture impressed at base and 

 about a third longer, than the prothorax; abdomen narrower than the 

 elytra, parallel, the fourth and fifth tergites equal; metasternum not 



