288 MEMOIRS ON THE COLEOPTERA 



Anterior tibiae widest at apex, having four external teeth, of which the 

 apical is most prominent and bifid. Body less narrow than in any 

 of the following species, oblong, with parallel arcuate sides, moder- 

 ately convex, with varnish-like lustre; head nearly smooth, without 

 fovea, the ambient stria entire, more or less reentrant medially; 

 prothorax with the sides moderately converging and much rounded, 

 especially in the male, the surface laterally with scattered punctures, 

 the striae approximate behind, not attaining the base, coarse and 

 somewhat sinuous, the outer much further from the inner than 

 from the edge, as in all the following species; elytra as in merdarins, 

 the subhumeral coarse anteriorly, and there downwardly bent in 

 even arc, the fourth discal much abbreviated at base, the fifth and 

 sutural extending to or beyond the middle; surface smooth, wholly 

 impunctate; pygidial punctures very coarse, notably sparse on the 

 propygidium, rather close and deeper on the pygidium; mesosternal 

 marginal stria narrowly interrupted medially. Length 5.2-6.2 mm.; 

 width 3.4-4.3 mm. Pennsylvania, Massachusetts, Michigan and 

 Indiana. Four examples. The male is smaller and narrower than 

 the female and with more anteriorly narrowed prothorax. [Hister 

 merdarius Mars, nee Say] memnonius Say 



Anterior tibiae arcuate in external outline, the apical tooth not as prom- 

 inent as the penultimate; fourth discal stria less abbreviated at 

 base; fifth and sutural shorter, seldom attaining the middle 2 



2 Elytra with small sparse scattered punctures apically. Body oblong- 

 oval, convex, polished, the head with the entire stria more pentagonal 

 than in the preceding, the frontal part very feebly sinuate; prothorax 

 as in the preceding but rather less transverse, the sides somewhat 

 more converging and more evenly arcuate, the scattered lateral 

 punctures far less obvious; elytra similar throughout but with the 

 the fourth stria more nearly entire; propygidium with the puncture? 

 less coarse and twice as numerous, the pygidium more convex, with 

 the deep punctures close and moderate and much smaller than in 

 memnonius, the interspaces with fine sparse punctulation; proster- 

 num obtusely convex, the marginal mesosternal stria entire; an- 

 terior tibiae with five even external serrules, the basal ones very 

 small; antennae rufous, the club nearly black. Length 5.6-6.0 mm.; 

 width 3.7-3.8 mm. Connecticut (Bridgewater) and Michigan 

 (Agricultural College),- Weed. Two examples. .. .egregius n. sp. 



Elytra with the sparse apical punctures less numerous or diffused than in 

 egregius. Body still more narrowly oval and convex; head flat 

 except basally, the ambient stria very fine, arcuate, not at all pen- 

 tagonal, clearly interrupted at the middle; prothorax only moder- 

 ately transverse, the sides moderately converging and nearly straight, 

 rounding apically; surface and strise nearly as in egregius, except 

 that the striae are parallel, not more approximate posteriorly; short 

 ante-scutellar stria strong; elytra as in egregius, except that all the 

 striae are finer and less impressed, the row of small remote punctures 

 representing the humeral stria more distinct, the fifth and sutural 

 still shorter, the inflexed sides much less concave and with far fewer 

 scattered punctures; propygidium with moderate and rather close-set 



