148 MEMOIRS ON THE COLEOPTERA 



intervals broad, nearly flat. Length 19.0-21.0 mm.; width 8.0-8.7 

 mm. Iowa (Keokuk) expansa n. sp. 



Form narrower and more convex, deep black and shining; head much 

 less large, although distinctly more than half as wide as the pro- 

 thorax, the impression and the labrum nearly similar; prothorax 

 much shorter and relatively wider, three-fifths to two-thirds wider 

 than long, in form and impression nearly similar, fully four-fifths 

 as wide as the elytra, the latter two-fifths to one-half longer than 

 wide, oblong, with broadly arcuate sides, the striae feebly punctulate, 

 rather fine but deeply impressed internally, becoming finer and feeble 

 externally, the fifth very feeble, the sixth nearly, the seventh quite, 

 obliterated, the single interstitial puncture as usual. Length 17.0- 

 18.2 mm.; width 7.2-7.3 mm. Kansas oblonga n. sp. 



Form oblong-oval and less elongate, broadly and distinctly convex, 

 black and shining; head distinctly less large, only a little more than 

 half as wide as the prothorax, the impression nearly similar, the 

 labrum however more angularly emarginate; antennae very slender 

 as usual, testaceous except basally; prothorax much shorter and 

 more narrowed anteriorly, nearly three-fourths wider than long, 

 three-fourths as wide as the elytra, otherwise nearly similar; elytra 

 oblong, with feebly arcuate, parallel sides, about one-half longer 

 than wide, the striae not punctulate but almost exactly as in expansa, 

 from which it differs in the shorter, broader, more anteriorly nar- 

 rowed prothorax and more triangularly, broadly emarginate labrum 

 and distinctly shorter antennal joints distally in the female. Length 

 18.5 mm. width 7.9 mm. Louisiana major Lee. 



3 Elytral striae obsolescent laterally; head relatively small; elytra wholly 

 black 4 



Elytral striae distinct throughout, the head relatively large, the strial 

 intervals alternately black and dark rufo-testaceous 5 



4 Cephalic impression broad, formed nearly as usual and broadly 

 truncate behind, the head barely at all more than half as wide as 

 the prothorax; labrum broadly, angularly incised, the incisure 

 asymmetric in position somewhat as in major; antennae slender, 

 the joints a little shorter than usual; prothorax nearly three-fifths 

 wider than long, much narrowed anteriorly, with rounded sides, 

 the apex barely three-fourths as wide as the base, the impressions 

 as usual, the surface rather more declivous at the sides but not at 

 all reflexed and with a very fine marginal bead; elytra oblong-oval, 

 with unusually arcuate sides, fully two-fifths wider than the pro- 

 thorax, convex, the striae for the greater part impunctate, deeply 

 impressed, with convex intervals internally, the first five strong, the 

 sixth feeble and seventh almost obsolete, vestigial, the single fovea of 

 the third interval well developed. Length 14.5 mm.; width 6.0 mm. 

 Kansas cliens Csy. 



Cephalic impression broad but posteriorly arcuate in outline, the labrum 

 more obtusely, angularly emarginate, the antennal joints longer and 

 more slender; head small, half as wide as the prothorax, the eyes 

 prominent; prothorax moderately transverse, a little more than 

 one-half wider than long, much narrowed anteriorly, with obliquely 



