June, 189S.] 
Casey : North American Coleoptera. 
69 
median spot posteriorly; antennae rather stout, not quite as long as the width of 
the head. Prothorax obviously shorter than wide, narrowed somewhat from 
very near the base, more rapidly and arcuately and with moderate serrules an¬ 
teriorly, the apical sinuation narrow with the teeth small; surface coarsely as- 
perato-tuberculate anteriorly, smoother in basal two thirds, the sculpture becom¬ 
ing coarsely subimbricate in the middle toward base, with the surface shining 
and the median line finely impressed. Elytra much more than twice as long as 
wide, nearly three times as long as the prothorax and just visibly wider, the 
punctures coarse and close-set, subserial in arrangement, coarse, contiguous and 
subconfluent on the declivity, the tubercles feeble, especially the inner. Abdo¬ 
men finely punctulate, pubescent, the scattered larger punctures rather small. 
Legs quite slender. Length 9.0 mm.; width 2.5 mm. Kansas, Iowa and 
North Carolina. gracilis, sp. nov. 
'6 Pubescence distinct, decumbent. Sutural series rather impressed, the suture ele¬ 
vated on the declivity. Head rather small, the eyes moderate in size. Elytra 1 
punctures not serial in arrangement, but with traces of three fine raised lines. 
Indiana and Kansas... bicaudatus Say. 
7—Prothorax emarginate at apex, fully as long as wide and with the usual terminal 
teeth of the lateral series. Male. —Rather stout, cylindrical, shining, dark testa¬ 
ceous-brown in color; antennae pale; surface virtually glabrous. Head moderate, 
nearly two-thirds as wide as the prothorax, broadly, almost evenly convex, with 
a large median impunctate area; transverse impression behind the clypeus deep 
and distinct; eyes small and but moderately prominent; antennae fully as long as 
the width of the head. Prothorax fully as long as wide, the sides broadly arcuate, 
becoming parallel only very near the base, converging anteriorly where the ser¬ 
rules are prominent and close-set in less than apical half; apex narrowly sinuate, 
surface tuberculose anteriorly, becoming smooth and polished in basal half and 
almost sculptureless toward the sides but sparsely imbricatostrigose toward the 
middle. Elytra short, one-half longer than wide, equal in width to the pro¬ 
thorax, strongly but not very closely, confusedly punctate, more closely but 
scaicely coalescently behind, the declivity very steep, more convex at each side 
above but not tuberculate, the suture elevated. Abdomen finely, strongly and 
densely punctulate,the scattered coarser punctures not visible,the pubescence even, 
decumbent and rather dense; last segment shorter than any of the preceding. 
Hind tarsi very much longer than the tibiae. Length 6.7 mm ; width 2.2 mm. 
Texas (El Paso). grandicollis, sp. nov. 
Prothorax truncate at tip, with the angles obtuse and rounded, without trace of pro¬ 
cesses. . g 
5 —Larger species, the prothorax much wider than long and trapezoidal in form; 
Female. —Rather slender, cylindrical, shining, subglabrous, dark rufo-testaceous 
in color. Head well developed, nearly three-fourths as wide as the prothorax, 
the surface granose throughout, tumid posteriorly, the epistomal suture just be¬ 
yond the middle of the length and impressed toward the middle, the epistoma 
large; eyes very large, convex and prominent; antennae obviously shorter than 
the width of the head, with the club relatively very long, the five joints of the 
funicle together barely equal in length to its first joint. Prothorax much wider 
than long, the sides parallel and feebly arcuate nearly to the middle, then 
