H4 MEMOIRS ON THE COLEOPTERA. 



as the elytral base; elytra rather transverse, the suture impressed, much 

 longer than the prothorax, the apices not definitely sinuate; abdomen 

 rather short, perfectly parallel, narrower than the elytra, the tergites equal 

 or nearly so. Length i.o mm.; width 0.23 mm. Pennsylvania (Phila- 

 delphia). 



The minute size, general resemblance of the body to Canastota 

 and of the antennae to Taxicera, with the peculiar sternal structure, 

 will render the identification of this species quite certain. 



Although differing from the preceding in general appearance to a 

 considerable degree and also in some of its structural characters, 

 as well as inhabiting a widely different zoological region, the fol- 

 lowing species is placed provisionally in the same subgenus: 



Sableta (Taxicerella) immunis n. sp. Much larger, more elongate, parallel 

 and convex, rather shining, pale testaceous, the head but little darker, the 

 elytra feebly and broadly infumate postero-externally, the abdomen with a 

 large and indefinite subapical cloud, the legs pale; micro-reticulation evident, 

 coarser but almost completely obsolete on the abdomen, the punctures 

 throughout fine and moderately close, sparse on the abdomen, the vestiture 

 evident but not dense; head slightly wider than long, parallel and arcuate 

 at the sides, the eyes at more than their own length from the base, the carinse 

 longer than in remissa; antennae moderately short, dusky, pale basally, 

 the second joint elongate, longer than the third, which is fully twice as long 

 as wide and gradually slender basally, but not as long as the next two, the 

 fourth but slightly transverse, the remaining joints gradually strongly in- 

 crassate, the tenth much less transverse than in remissa, nearly twice as wide 

 as long, the last oval, barely as long as the two preceding; prothorax convex, 

 but slightly transverse, about a third wider than long, parallel, with] broadly 

 arcuate sides, distinctly wider than the head and only a little narrower than 

 the elytral base, not impressed; elytra only moderately abbreviated, with 

 very feebly diverging sides, the apices externally broadly and very feebly 

 sinuate, the suture fully a third longer than the prothorax; abdomen a little 

 narrower than the elytra, parallel, slightly narrowing apically, the sixth 

 tergite (c?) at apex with a median sinuate lobe, the sides of which are feebly 

 and obtusely dentiform but flat and separated at each side from a more slen- 

 der though not longer lateral process, by a narrow and deep sinus, scarcely 

 more than half as wide as the lobe. Length 1.6 mm.; width 0.38 mm. 

 California (Sta. Cruz Mts.). 



The sternal characters are nearly as in remissa but with the coxae 

 rather less separated. 



Pseudota n. gen. 



The hypomera in this genus are horizontal and warped as in 

 Dimetrota and the preceding groups, but otherwise the general 

 habitus of the body and sternal structure do not differ from those 



