COLEOPTERA. 85 



sides moderately arcuate; surface polished; svitural striae distinct, fecibly 

 arcuate ; very strongly, coarsely, and evenly punctato-asperate, punctures 

 arranged serially, every third series being composed of punctures which are 

 very much larger. Scutellum as long as wide, acutely rounded behind. 

 Abdomen finely pubescent, very minutely punctato-asperate, asperities ar- 

 ranged transversely m partial series ; segments five, first as long as the next 

 two together, second to fourth equal in length, fifth very short. Legs long 

 and slender ; anterior tarsi very slender and cylindrical, tibia terminated in- 

 teriorly by a stout finely acuminate arcuate spine, second spine very minute; 

 posterior femora not toothed, tibiae straight; anterior femora sub-cylindrical, 

 not very robust. Length 1.9 mm. 



N(^ar Chester, Pennsylvania, 1. 



The unique specimen of" this very fine species I found under rubbish 

 of various sorts cast up by the waves on the shores of the Delaware 

 River in early spring. If it is a male, as there is reason to suppose, 

 it must come immediately ai'tev paradoxum, otherwhe it will perhaps 

 find a most appropriate place just after thoracicum. The posterior 

 femur has the lower edge abruptly more strongly arcuate near the tip, 

 but cannot be said to be properly toothed ; the middle portion of the 

 disk of each elytron in the type is indefinitely clouded with castaneous 

 behind the middle. 



The species may be distinguished at once by its oval form, pale 

 yellow elytra, and very coarse asperate elytral punctuation. 



EUMICRUS Lap. 



Microstemma Mots. 



E. vestalis n. sp. — Form moderately robust. Color throughout dark 

 rufous, legs and antennae not paler; pubescence of head and pronotum 

 rather sparse and fine, that of the elytra coarser, longer and more dense, 

 erect and bristling; integuments highly polished. Head slightly wider 

 than long, sub-rectangular; sides just visibly convergent posteriorly and 

 very feebly arcuate ; basal angles broadly rounded ; eyes moderate, rather 

 finely granulated, feebly convex, situated at the anterior angles ; interocular 

 surface feebly and evenly convex, finely rather densely and very feebly 

 puuctulate toward the eyes, narrowly impunctate along the middle ; supra- 

 antennal margin of the front slightly produced in the middle ; antennae 

 rather approximate at base ; clypeus under their points of attachment short, 

 very declivous, and very broadly rounded ; labrum very short, transverse, 

 rugulose, coarsely setose ; third joint of the maxillary palpi slender, clavate, 

 nearly five times as long as wide, fourth obscure, very short ; antennae as 

 long as the head and prothorax together, strongly geniculate, first joint as 

 long as the next two together, second slightly shorter than the third and as 

 long as the fourth, fifth longer than the third, sixth shorter, seventh and 

 eighth much shorter, slightly wider than long, ninth and tenth each as long 

 as the seventh and eighth together, last three joints increasing in width, 



