OF WASHINGTON. 167 
a shallow fossa .each side. Scutellum large subtriangular, concave at 
base, rounded at apex, nearly one-half longer than wide. 
Elytra moderately acuminate; striae moderately fine, deep, especially 
at base, with punctures much wider basally and not wider at apex. Inter- 
vals flat, subequal except third which is a little the widest, punctures 
large and placed at very irregular intervals except on first where they are 
smaller and twice as closely placed. Humeral and subapical callosities 
of moderate size, shining black and finely punctate, the latter prominent. 
Pygidium coarsely and deeply punctate. 
Lower surface strongly and coarsely punctate, sparsely on metathorax 
and first abdominal segment. Legs finely punctate; tibiae weakly sinuate 
on inner border, finely fimbriate, obliquely truncate at apices. 
cT. Pygidium wide and subtruncate at apex, with fringe of yellow 
hairs nearly uniform; ventral concavity distinct, shallow. 
9 . Pygidium narrow and rounded at apex, with hair normally in 
tufts at sides; first and second abdominal segments connate at middle, 
where the punctures are very sparse. 
Length 4.8-6.0 mm.; width 1.9-2.4 mm. 
Sea Isle City, N. J., June 10; Westville, N. J., collected by 
Mr. Charles R. Boerner, to whom we are indebted for this 
well-marked and interesting species. It is evidently maritime 
and probably very local. 
Type. No. 9449, U. S. National Museum. Cotypes in 
Mr. Boerner 's collection. 
This species is the smallest Sphenophorus occuring in the 
United States. The tarsal and tibial structure is similar to 
parvulus and minimus, which also have the same extraorbital 
grooves. The coarse subconfluent thoracic sculpture alone is 
quite sufficient for the separation of this species. The elevated 
median line of the thorax, the large concave scutellum, and 
prominent subapical callosities are also important characters. 
The three species which have been mentioned are related 
to the venatus group. They may be classified as follows: 
Thorax and elytra of about equal width. 
Surface with fine cinereous coating of argillaceous material; thorax 
densely, regularly reticulately punctate, median line absent or very 
thin. N. Y. 111., Fla. Tex par-vulus Gyll. 
Surface with velvety brown coating; thorax sparsely, irregularly and 
coarsely punctate, median line absent or short. W. Pa. 111., Fla. 
' "^ Tex minimus Hart 
Thorax distinctly narrower than the elytra. 
Black without coating; thorax densely to confluently and very irregu- 
larly deeply punctate, median line long and broad. N. J. (coast), 
marinus n. sp. 
