142 
10 Abdomen of male deeply and sharply impressed along middle, penulti¬ 
mate ventral strongly and acutely emarginate, slightly transversely 
plicate each side of median channel, last ventral with broader deep 
longitudinal impression, widening posteriorly and ending behind in 
two black projecting lobes separated by an acute notch; thorax 
evenly, moderately punctate; color rufocastaneous to piceous. 15-19 
mm. congma , Lee. 
Abdomen of male flattened at middle, penultimate ventral with a 
straight transverse carina, last ventral irregularly concave, anterior 
margin elevated; last ventral of female deeply and broadly emargi¬ 
nate, impressed or eroded at middle; thorax coarsely, deeply, and 
irregularly punctate; elytral punctures distinct, costse feeble; color 
brownish to castaneous. 16.5-20 mm. affinis, Lee. 
Sexual characters as in preceding; thorax very coarsely and closely 
punctate; elytral punctures feeble, costas usually well marked; color 
castaneous to piceous, pruinose. 17-18.5 mm. prunina, Lee. 
11 Clypeus concave, moderately reflexed, feebly emarginate.12 
Clypeus flat, narrowly reflexed, deeply emarginate.3$, 
12 Penultimate ventral of male without distinct elevated transverse 
ridge..13 
Penultimate ventral with distinct elevated transverse ridge, straight 
or curved. 14 
13 
14 
15 
16 
17 
18 
19 
20 
Penultimate ventral of male with curved rugose impressed channel along 
posterior margin at middle, in front of which is a broadly triangular, 
not elevated, rugose space, last ventral with smooth cupuliform depres¬ 
sion ; body large and broadly ovate, subpruinose; thorax closely, 
rather coarsely, punctate. 15-21 mm. crassissima , Blanch. 
Penultimate ventral with subcircular rugose impression, border widely 
interrupted behind by hind margin of segment, sometimes slightly 
elevated, last ventral with broad smooth impression; fixed spur 
rather short and broad; clypeus more distinctly emarginate; thoracic 
punctures rather coarse and sparse. 15-18 mm. inversa, Horn. 
Transverse ridge deeply divided by the longitudinal median impres¬ 
sion ; thorax coarsely and rather closely punctate, with smoother 
median line. 15-19 mm. bipartita , Horn. 
Transverse ridge entire.,.15 
Surface opaque, conspicuously pruinose; thoracic punctures distinct, 
sparse, and irregularly placed, median line smoother; penultimate 
ventral of male with short arcuate ridge; fixed spur not long. 
15-17 mm. micans, Knoch 
Surface shining, not pruinose; thorax not very coarsely or closely 
punctured. 16 
Transverse ridge short, strongly arcuate; female with last segment 
emarginate.17 
Transverse ridge longer, straight or but slightly curved.20 
Bidge Overhanging throughout..18 
Bidge not overhanging.19 
Ends of ridge at extreme hind margin of segment and overhanging 
the next; clypeus feebly emarginate; oblong-oval, rufocastaneous to 
piceous. 19 mm.". arcuata , Smith. 
Ends of ridge distant from hind margin of segment; otherwise not 
superficially distinguishable from the preceding. 18-20 mm .dubia, Smith. 
Bidge small, distinct, the ends as well as the rest of the ridge near 
the middle of the segment; claspers of male symmetrical; not no¬ 
ticeably different from the preceding species. insperata, Smith. 
Bidge slightly curved, ends overhanging, declivous at middle; female 
w r ith last ventral not emarginate; closely resembling the preceding. 
18-22 mm. fusca, Frohl. 
Bidge nearly straight, not overhanging posteriorly, last ventral gran¬ 
ulate-punctate; female with last ventral emarginate; larger and 
more robust; thorax subangulate before the middle, .grandis. Smith. 
