132 Trans. Acad. Sci. of St. Louis. 



deep rounded basal impression occupyirg from about a half to a third 

 the entire length of the tergite, the fourth with a very feeble concavity 

 tovyard base, having a prominent basal margin but without the same 

 character of depression as the first three, the impressions all rather more 

 coarsely punctured than the remainder of the surface; legs rather long 

 aHd slender, Atlantic districts of America Echochara 



Body stouter but equally convex, the integuments finely punctate, some- 

 what alutaceous iu lustre, the abdomen polished; mesosternal process 

 narrovv but with i he apex subtruncate, extending posterially muc: further 

 than usual in this group and attaining fully apical fifth of the acetatula 

 and almost the end of the coxae, the tip exteKding to the moderately 

 produced and parabolically rounded n-etasternal projection without 

 longitudinal discontinuity; head rather small, parallel and somewhat 

 arcuately inflated behind the moderate and slightly prominrrt eyes, 

 abruptly narrowed at the extreme base; front broadly arcuato-truncate; 

 palpi normally slender, the antennae well developed, with the second 

 and third joints much elongated; prothorsx subpara^lel, mu h more 

 arcuate at base than in Echochara, with the basal ar.gles obtuse and 

 more rounded; elytra not sinuate at tip externally; abdomen slightly 

 narrowed from base to the tip of the fifth segment, the impressions all 

 unusually narrow and shallow, that of the fourth tergite very feeble, all 

 more finely but more peiforately punctate than the remainder; legs 

 rather short and slender. Europe *PoIystomota 



II — Form somewhat narrow and depressed, parallel, the sculpture sparse; 

 mesosternal process extending to apical fourth of the coxae, moderately 

 narrow, the tip truncate and fully attaining the apex of the unusually 

 elongate metasternal projection ; head well developed, orbicular, the 

 eyes well developed, the neck but little more than two -thirds as wide 

 as th« head, the antennae moderate, gradually incrassate, with the 

 elongate second and third joints subequal; prothorax subparaliel, with 

 obtuse and slightly rounded though distinct basal angles, the hypo- 

 mera almost as fully visible from the sides as in Maseochara and tx- 

 tending to the apex; elytra moiierately developed, not in the least 

 sinuate laterally at tip, the external angles rounded; abdomen with the 

 first three tergites rather broadly, feebly and decreasingly impressed at 

 base; hind tarsi short, nearly as in Emplenota, the first four joints sub- 

 equal or with the first very slightly longer than the second. Sv- horah 

 regions Piualochara 



Form rather stoat, convex, alutaceous in lustre, the punctuation fine and 

 very close throughout, including the abdomen; mesosternj.1 process 

 rather narrow but not strongly acuminate, flat, the apex arcuato- 

 truncate, not attaining the very short and broadly roundid meta- 

 sternal projection by a short deep longitudinal discontinuity; head 

 rather small, feebly narrowed behind the somewhat promirent 

 eyes, the front broad, feebly, evenly declivous to the apex; palpi 

 somewhat shoit and thick; antennae moderately well developed, stout 

 and somewhat compact, the second and third joints elongate, the 

 fourth short, transverse and much shorter than the fifth as usual; pro- 

 thorax unusually transverse and narrowed from base to apex, with the 

 base broadly arcuate and the angles distinct; elytra large, each dia- 



