78 Trans. Acad. Sci. of St. Louis. 
thorax about a fifth longer than wide, a little shorter in the female, the 
sides distinctly converging from the slightly obtuse apical angles to the 
base and nearly straight, the punctures coarse, very sparse and irregu- 
larly disposed, the broad median smooth area not defined by series; 
elytra slightly narrower than the prothorax and half as long in the male, 
equal to the latter in width and three-fifths as long in the female; the 
sides slightly diverging posteriorly from the humeri, which are not 
very broadly rounded; punctures smaller than those of the prothorax 
and less sparse, disposed in very uneven series, sometimes irregular; 
abdomen parallel, equal in width to the elytra in both sexes, shining, 
the punctures fine and notdense. Male with ventrals two to four nar- 
rowly and very feebly impressed along the middle, the fifth having 
a broader deep parallel impression bounded by tumid sides and not 
attaining the base, the apical margin with a feeble shallow rounded 
sinus, the impression narrowly shining and glabrous along the median 
line; sixth ventral broadly, feebly lobed at tip, the lobe with a small 
shallow rounded sinus at its middle, the surface tumid apically and 
impressed basally at the middle, the lateral slopes of the tumidity more 
densely clothed with black pubescence; female with the sixth ventral 
strongly lobed at apex, the lobe evenly rounded. Length 8.0.-9.6 mm.; 
width 1.1mm. Iowa and Missouri....... oveeeeccessssDrevipenne Lec. 
Body shorter and much stouter, black in color throughout, the legs and 
antennae dark rufous; head shorter and broader in form, large, much 
wider than the elytra in both sexes, the eyes nearly similar, the sides 
behind them shorter, parallel and arcuate, the basal angles very broadly 
rounded; antennae stout and filiform; gular sutures feebly arcuate, the 
punctures coarse and less sparse; prothorax slightly longer than wide, 
slightly narrower than the head, only slightly narrowed from the apical 
angles, which are broadly rounded, to the basal angles which are also 
notably rounded, the punctures coarse but much more close-set, the 
median smooth line much narrower; elytra about three-fifths as long as 
the prothorax in both sexes and distinctly narrower, the sides more 
strongly diverging from the more broadly rounded basal angles and 
very feebly arcuate; punctures strong and sparse and irregularly dis- 
posed;- abdomen shining, parallel, as wide as the elytra, finely and not 
very closely punctate. Male with ventrals two to four wholly unmodi- 
fied, the fifth very feebly impressed along the middle from apex to base, 
gradually more narrowly to the base, the bottom not glabrous along 
the median line and the sides not tumid, the apex feebly sinuate along 
the impression in about median third; sixth segment almost unmodified, 
having a rather narrow and very feeble parallel impression along the 
middle throughout, the apex very broadly, feebly arcuate, the middle 
third becoming gradually very feebly sinuato-truncate; female with 
the sixth ventral moderately lobed at tip, the lobe rather narrowly 
rounded. Length 8.0 mm.; width 1.28 mm. North Carolina (High- 
IANS) «20 oe'e's seaide boike be be We ooh viedo dh WAG Wile xs e'e4 4004 CREMERED OG BD, 
The second species differs very greatly from brevipenne in 
in its shorter and broader form, more broadly rounded angles 
