FREDERICK BLANCHARD 
9 
tarsi are received in narrow oblique grooves upon the meta- 
sternum and the first three segments of the abdomen respectively. 
The first segment of the abdomen each side of the middle, is ob- 
liquely crossed by a distinctly elevated line, which limits the in- 
ner margin of the shallow excavation which receives the end of 
the tibia in repose. 
Factopus horni LeConte 
Very elongate, dull or feebly shining, finely and closely punctulate above and 
below, clothed with fine prostrate hair, no coarser hairs intermixed. Head 
convex, punctate, eyes orbicular, moderate, feebly nicked by the encroaching 
of the feeble supra-antennal ridges, orbits impressed. Antennal fossae open, 
the clypeus ^\"ider in front; antennae fusiform, first joint scarcely longer than 
the next two, second a little shorter, third and following about as wide as long, 
gradually increasing in size, last joint longer, subacute at tip, received in cavi- 
ties or grooves extending along the prostemal sutures, thence abruptly out- 
ward to hind angles. 
Prothorax a little less than twice as wide at base as long, hind angles strongly 
produced behind, embracing the base of the elytra, the sides margined to the 
middle or beyond from the base, strongly arcuate and cariniform in the males 
at base, thence deeply sinuate and narrowed to apex, which is but little more 
than one-half as wide as the base. In the female the pro thorax is less arcuate 
at the sides of base because only feebly sinuate and more obliquely narrowed 
to apex, base broadly and deeply sinuate each side and broadly lobed at middle, 
disk convex, flattened across the base, rather coarsely and closely punctate; 
scutellum narrow, elongate. Elytra elongate, depressed at base, somewhat 
obliquely impressed behind the humeri, especially in the males, gradually 
narrowed behind, more arcuately in the female; striae fine but well marked, 
closely set with punctures which, on the disk, are a little wider than the striae; 
the striae entire, reaching from base to apex except that on the hiuneri; they 
are somewhat obsolete or interrupted, and the second and third are shorter at 
apex, ninth extending around the apical border to the sutural, intervals flat, 
impunctate; inferior margin received by the projecting and overlapping last 
ventral. 
Prosternum rather narrow, sparsely punctate and pubescent, striae entire 
or nearly so, divergent in front, on both sides of antennal grooves coarsely and 
closely punctate; metasternum anteriorly and at sides rather coarsely punc- 
tate, more finely at middle behind, a short, fine, median, smooth line more or 
less evident. Abdomen more coarsely punctate at sides especially anteriorly, 
more finely and sparsely at middle and on last segment, .\nterior tibiae sin- 
uate and narrowed at apex on outer side; tarsi with first joint eq'ual to second 
and third, last joint long. Length 3 to 5 mm. 
There is but one species known; it is, like many others of the 
family, very variable in size. As has already been indicated in 
Henshaw’s Third Supplement to the “List” P. fuchsi Casey is 
TRANS. AM. ENT. SOC., XLIII. 
