78 MEMOIRS ON THE COLEOPTERA 



Cratacanthus or Pharalus but always blunt and sometimes rather 

 broadly rounded ; it is only in very rare cases, such as pleuriticus 

 Kirby, that the basal angles become in any way sharp at tip, and 

 even there we find some slight bluntness. The pubescent upper 

 surface of the tarsi constitutes a marked peculiarity of this group. 

 Our species may be defined as follows: 



Elytra without a dorsal setigerous puncture 2 



Elytra with a distinct dorsal puncture just outside the second stria, well 

 behind the middle 15 



2 Elytra of the female evenly and rather closely punctured virtually 



throughout, the punctures sparser and limited to the lateral parts 



of the surface in the male 3 



Elytra not punctured throughout in either sex, rarely impunctate in 

 both sexes as in erythropus 4 



3 Body moderate in size and width or rather narrow, elongate, very 

 moderately convex, black or piceous-black above and beneath, 

 somewhat shining (cf), the elytra opaculate (9); legs, antennae 

 and trophi bright testaceous throughout; head two-thirds as wide 

 as the prothorax, differing but little sexually, the eyes prominent, 

 the foveae minute, perforato-punctate, at the bottom of large feeble 

 impressions; antennae long, very slender, extending far beyond the 

 prothorax, which is about a third wider than long, broadly, evenly 

 rounded at the sides from apex to base, the latter transverse, 

 margined and distinctly wider than the apex, the angles obtuse and 

 narrowly blunt, the apex shallowly sinuate; surface broadly sub- 

 deplanate and closely punctate latero-basally, the margins rather 

 coarsely reflexed, the foveae large but shallow; median line fine but 

 rather broadly impressed; elytra three-fourths longer than wide, 

 about a fifth wider than the prothorax, parallel, feebly arcuate and 

 narrowly reflexed at the sides, ogival at apex, the sinus shallow, even 

 and evident; surface (c?) shining, rather strongly striate, thescutellar 

 stria very long but free, the intervals feebly convex, the outer four 

 with sparse feeble diffused punctures, the next three with very few 

 widely scattered punctures of the same kind, or ( 9 ) with even distinct 

 punctures throughout; hind tarsi long, the basal joint nearly one- 

 half longer than the second and longer than the fifth, the tarsi ( 9 ) 

 shorter and still more slender; in both sexes they are finely pubescent 

 above and coarsely setose beneath; claws moderate, arcuate, feebly 

 subdentate internally at base. Length (cT 9 ) 12.0-14.3 mm.; 

 width 4.2-5.3 mm. Indiana and Missouri (St. Louis). Six examples. 



vagans Lee. 



Body much larger and stouter, rather more convex, similar in lustre and 

 coloration, the head larger, three-fourths as wide as the prothorax, 

 the perforate foveae less minute; mandibles similarly smooth and 

 convex above; antennae rather long though not extending behind the 

 thoracic base; prothorax more transverse, nearly one-half wider 

 than long, otherwise nearly similar, except that the latero-basal 



