322 
GEO. H. HORN, M. I). 
linear median impression, lateral depressions feel)le, the sides not explanate. 
surface transversely, rather roughly strigose, with punctures between the strigge ; 
scutellum transverselj^ carinate; elytra very feebly sinuate at sides and very 
little dilated bebind the middle, apices rounded, serrulate, disc very slightly de- 
pressed, basal fovese feeble, surface imbricately sculptured and with three faint 
l)ubescent s])ots on each side, one at base, second in front of middle, the last one- 
third from a))ex ; body beneath rather more shining than above; prosternal lobe 
truncate and broadly emarginate, intercoxal process very little narrowed to apex, 
the tip truncate, propleurae punctate and subreticulate ; metasternum at sides 
strigose, somewhat reticulate, pubescent at its posterior angle, as is also the outer 
si<le of the coxal plate. Abdomen sparsely punctate at middle, the sides of the 
first two segments strigose and somewhat reticulate, the vertical portion of first 
segment pubescent ; pygidium indistinctly punctate, carinate along the median 
line ; claws broadly toothed. Length .24 inch. ; 6 mm. 
The male differs from the female in having the prosterniim slightly 
more densely punctate and the first two ventral segments more ru- 
go.se at middle. Five specimens have been examined, four of which 
are in the National Museum. 
This species is not conspicuously marked, but among those in which 
the antenntc are serrate from the fifth joint it may be known by the 
very convex thorax, with feeble median depression, the absence of 
angular carina and the feeble j)ube.scent spots of the elytra. 
Hah. — Texas, precise locality unknown. 
. 4 . silboiiictiiM Gory. — Form relatively robust, piceous with faint bronze 
lustre, more evident on the thorax, elytra ornate with pubescent spaces. Antennge 
scarcely reaching the middle of the thorax, piceous, slightly bronzed, strongly 
serrate from the fifth joint; head convex, with a median depression from the 
occiput to the clypeus, surface relatively coarsely strigose. Thorax wider than 
long, sides regularly arcuate, margin sinuate, hind angles rectangular, without 
trace of carina, disc convex, with a rather broad but not deep median depression 
extending from base to apex, lateral depression well marked, extending toward 
the base, surface transversely strigose at middle, obliquely at sides, punctate near 
the margin; scutellum transversely carinate; elytra slightly sinuate behind the 
humeri, dilated somewhat behind the middle, apices rounded, serrulate, disc 
slightly flattened with a vague costa, sutural margin elevated, except at basal 
fourth, surface coarsely imbi-icate, somewhat strigose at middle, smoother near 
apex, a pubescent space extending from the humeri to the middle, with two in- 
terruptions, then turning obliquely outwards, a second oblique baud one fourth 
from apex; body beneath more shining than above; prosternal lobe broadly 
emarginate. intercoxal process gradually narrowed, acute at apex, propleurte 
sparsely punctate; metasternum transversely strigose, somewhat reticulate. 
Abdomen very sparsely, indistinctly punctate over its entire surface, vertical 
portion of segments not conspicuously pubescent; pygidium sparsely punctate, 
not distinctly carinate; claws broadly tootbed at middle. Lengtb .16 — .18 inch.; 
4—4.5 mm. 
Sexual characters . — In the specimens before me 1 am unable to 
