n6 MEMOIRS ON THE COLEOPTERA. 



distinctly wider than the head and a little narrower than the elytra, moder- 

 ately transverse, slightly widest at base, the sides thence feebly converging 

 and slightly arcuate, the median line feebly impressed from before the middle 

 to the base; elytra subparallel, rather transverse, the apices not at all sinuate 

 externally, the suture fully a third longer than the prothorax; abdomen 

 rather short and broad, almost as wide as the elytra, parallel, the first five 

 tergites subequal, the sixth (c?) broadly sinuate at apex, the middle of the 

 sinus abruptly a little more deeply sinuate, the oblique sides each feebly 

 bilobate, the lateral teeth slightly prolonged but not acute. Length 1.9 

 mm.; width 0.58 mm. New Jersey. 



This species is not allied closely to dissensa, the antennae, though 

 strongly incrassate, being very different, as also are the male sexual 

 characters. The form of the prothorax would seem to betray a 

 relationship with Acrotona, but the hypomera are horizontal and 

 partially visible from the sides. 



Pseudota sitiens n. sp. More slender, moderately convex, testaceous, 

 the elytra a little more flavate, the head blackish, the abdomen black, slightly 

 pale at tip, the two basal segments dark testaceous, the legs pale; surface 

 rather shining, the fine punctures not very dense, asperulate on the elytra, 

 the abdomen finely, sparsely punctulate, the reticulation rather coarse but 

 feeble, irregular; head orbicular, nearly as long as wide, rounded at the sides, 

 the eyes at less than their own length from the base, the carinse fine and far 

 from entire; antennae short and stout, the second and third joints very 

 moderately elongate, the latter slightly the shorter and obconic, the outer 

 joints rapidly very stout and transverse, the last six or seven together parallel 

 at the sides, the ninth and tenth similar, the last conoidal, a little longer 

 than the two preceding; prothorax nearly twice as wide as long, parallel, 

 the sides rather strongly and evenly arcuate, the basal impression minute 

 and subobsolete, much wider than the head and very little narrower than 

 the elytra, the latter rather transverse, parallel, the suture fully a third longer 

 than the prothorax, the apices rather deeply sinuate laterally; abdomen 

 rather long, only slightly narrower than the elytra, perfectly parallel and with 

 straight sides, the fifth tergite not quite as long as the fourth. Length 1.6- 

 1.8 mm.; width 0.4-0.5 mm. Iowa (Cedar Rapids), Brendel. 



The sternal and tarsal characters are nearly as in dissensa, the 

 hind tarsi merely a little shorter. Sexual characters are not ap- 

 parent in the type specimens. 



Pseudota praesaga n. sp. Rather stout and slightly shining, the micro- 

 reticulation everywhere strong, rather coarse and without arrangement on 

 the abdomen, the punctures fine, not dense, well separated though somewhat 

 asperulate on the elytra; color black, the elytra piceo-flavate, infumate 

 slightly at the scutellum and very indefinitely postero-externally, the legs 

 pale piceo-flavate; head rather strongly transverse, parallel, the eyes convex 

 and prominent, at but little less than their own length from the base, the 

 tempora arcuate and equally prominent, the cannae fine but entire; antennae 



