00 IOWA STUDIES IN NATURAL HISTORY 
large, regular and closely set punctures; color beneath black. Head black, 
strongly carinate, thickly punctured and with a somewhat rugose appear- 
ance; juga explanate, slightly concave dorsally, a little longer than the 
elevated tylus thus leaving the apex of the head emarginate. Antennae 
brownish, the apical segment dilated and darker, the second and third 
segments not sharply differentiated. Rostrum reaching to midcoxae; sec- 
ond segment pale yellow, the third brownish and tip of apical segment 
piceous. Pronotum rather regularly, deeply punctate, a pale impunctate, 
median longitudinal line extending backwards from anterior margin to or 
almost to posterior margin; three blunt tubercles on the anterior submargin, 
the median one pale and sometimes almost obsolete; a median transverse 
furrow deeper towards the middle and an anterior furrow very near the 
fore border which is not much elevated above the base of the head; humeral 
tooth obtuse, somewhat rounded and projecting slightly forward, the an- 
terior margin arcuate; anterior angles with a small tubercle. Scutellum 
covering almost entire abdomen leaving the sides and tip uncovered; base 
with a pale calloused spot either side. Venter black, closely punctured 
except on disc which portion of the sixth visible ventral segment is almost 
smooth; incisures with pale points. Basal part of genital segment of male 
short, punctured, the outer apical angles produced into narrow, obtuse 
lobes projecting beyond apex of scutellum; inner and median genital plates 
of female short with a median sinus at apical margin. Tibiae and anter- 
ior femora blackish with one or two yellowish bands; middle and posterior 
femora pale with two bands and base blackish; tarsi pale brown. Length, 
6.5-7.0 mm. Width across pronotum, 4.0-4.5 mm. 
The larger size, large obtuse humeral tooth with arcuate 
anterior edge, distinctly elevated tylus, the nearly smooth dise 
of the posterior segment of the venter and the generally darker 
colors will serve to separate this species from the following. 
The differences in the genital segments are also quite pro- 
nounced. 
Professor Osborn recorded this species as ‘‘rare’’ in lowa and 
gave but one locality ‘‘Ames.’’ We have collected only a few 
specimens from Davenport, Chariton, Lake Okoboji and Iowa 
City. While the species is nowhere abundant it is generally 
distributed over the state and is likely to be met with in almost 
any locality. It has usually been found in damp situations on 
long grass or weeds in the vicinity of ponds or creek bottoms. 
It seems to hibernate more or less successfully in this latitude 
since some of the Iowa City specimens have been taken early in 
May. 
