- ne 
[August 1884. BULLETIN BROOKLYN ENTOM. SOC. VOL. VIL. 67 
A. vespertinum, 0. sp. Male. Form slender, very convex. Color grayish- 
black, luster metallic. Head as long as wide, eyes moderate, rather prominent; in- 
terocular surface flat, scarcely as wide as the eye, having two rows of impressed 
punctures; rostrum short and robust, twice as long as the head, very finely punctulate, 
rugulose near the base; antennze black throughout, inserted at a distance from the 
eye equal to the length of the latter; scape robust, aslong as the next two joints to- 
gether, clavate, first joint of funicle robust, slightly longer than wide, second slightly 
shorter and much more slender, club elongated, acuminate and well developed, 
pubescence becoming much thicker and more fuscous in tint toward the tip. Pro- 
thorax nearly as long as wide, almost cylindrical, slightly wider at the base, very fully 
arcuate at the sides in front of the middle; surface regularly punctured, punctures 
impressed, round, interspaces as wide as the punctures, flat and coarsely granulated; 
in the middle and at a distance from the base equal to one-seventh the length of the 
pronotum, there is a well-defined, very deep circular puncture. Elytra together widest 
in the middle, where the width is nearly twice that of the prothorax; sides regularly 
arcuate; striz deep, very finely and feebly punctured, intervals slightly wider than 
the strize, convex and feebly rugulose; along the crest of each interval is a row of very 
minute punc.ures. Legs moderate, femora not tuberculate, tibiz much longer than 
the femora. Length exclusive of beak 1.9 mm.—Female. Beak two and one-half 
times as long as the head, robust; antennze inserted at a distance from the eye equal 
to one and two-thirds times the length of the latter, longer than in the male, club 
smaller and narrower, scape slender as long as the first and second funicular joints to- 
gether, first j mt of funicle much longer than wide, oval, much more robust than the 
scape, second scarcely more than one-half as long as the first: there is a minute furrow 
between the rows ofpunctures on the head, which does not appear in the male. ‘Vhe 
circular puncture of the pronotum is at a distance from the base equal to one-fifth the 
length. ‘The prothorax is longer than wide. Length not including beak 2.2 mm. 
California. 
The entire body is covered very sparsely with very long, narrow, 
cinereous scales, which resemble hairs; they are recumbent and generally 
grow from the punctures. ‘The species appears to be very distinct by 
reason of the clearly defined, deep, circular puncture near the base of 
the prothorax, and the four specimens which I have under examination 
exhibit no perceptible variation, except that due to sex. The humeral 
angles of the elytra are well developed. 
Apion obsoletum, Smith. Occurs in great abundance amongst the 
tall weeds crowning the banks of the Susquehanna river opposite Wilkes- 
barre. In the smaller specimens with the shorter beaks (the so-called 
males) the scape of the antennz is equal in Jength to the next two joints 
together, and is inserted at a distance from the eye equal to the length 
of the latter, while in the specimens with the longer beaks, the scape is 
equal in length to the next four joints together and is inserted at a dist- 
ance from the eye equal to one and twe-third times the length of the 
latter. 
