16 IOWA STUDIES IN NATURAL HISTORY 
with whitish decumbent pubescence; sexes rather unlike; 
length,’ :6:0-8.0° mm... ... 2642. oe ee Oe bijugis 
Dilated anterior margin of prostethus forming a distinet obtuse 
angle beneath antennal tubercles .................... proteus 
Homaemus aenetfrons (Say) 
1824. Scutellera aeneifrons Say, Long's Exped. Source St. Peter’s R., II, 299. 
1839. Pachycoris exilis H.-S., Wanz. Ins., IV, 5, fig. 346. 
1839. Pachycoris exilis Germar, Zeitschr. Ent., I, 98. 
1851. Homaemus exilis Dallas, List Hem., I, 36, Pl. I, fig. 4. 
1859. Scutellera aeneifrons Say, Compl. Writ., I, 199. 
1870. Homaemus aeneifrons Stal, Svensk. Vet. Handl., 9, no. 1, 15. 
1877. Homaemus aeneifrons Uhler, Bull. U. S. Geol. Geogr. Surv., III, 365. 
1880. Homaemus aeneifrons Distant, B. C. A., Rhynch. Het., I, 20. 
1904. Homaemus aeneifrons Schout., Gen. Ins., fase. 24, 59. 
1904. Homaemus aeneifrons Van D., Trans. Am. Ent. Soc., XXX, 13 and 76. 
Body ovate, narrowed posteriorly and varying in color from dull to pale 
yellowish variegated with fuscous or black. Head convex, densely, coarsely 
punctured and without pubescence; black or bronzed with cupreous reflec- 
tions; a deeply impressed line each side of the tylus which latter slightly 
surpasses the juga; juga sometimes margined near tip with a short, very 
narrow pale vitta. Antennae fuscous, the incisures paler; basal segment 
pale clay yellow. Thorax dull or pale yellowish with faint and not sharply 
defined longitudinal fuscous lines; more finely and not so closely punctured 
as head; a smooth, pale transverse spot enclosed by a row of fine punctures 
near anterior margin either side of the middle; margins pale, almost 
straight, somewhat explanate; humeri rounded, entire; a closely punctured, 
irregular bronzed area either side of pectus. Scutellum dull or pale yel- 
lowish variegated with fuscous or black similar to pronotum; mere deeply 
and coarsely punctured at base, the puctuations becoming finer and 
closer towards apex; a little longer but a little narrower than abdomen thus 
exposing three or four segments of the maculated connexivum. Embolium 
more coarsely punctate than corium. Abdomen beneath pale with irregu- 
larly disposed coarse black punctures. Sixth visible ventral segment with 
a broad, somewhat angulate anterior prolongation. Femora and tibiae pale 
yellow, heavily and irregularly dotted with black; tarsi and claws fuscous 
or black. Length, 7.0-9.5 mm. Width across pronotum, 4.0-5.5 mm. 
This species is rather close to the one following but the char- 
acters indicated should serve very well in separating the two 
forms. It is widely distributed although it appears to be much 
less common in the state than H. bijugis. But five specimens 
have been taken at Lake Okoboji, Estherville, Rock Rapids and 
Ames, all toward the western and northwestern part of Iowa. 
A single specimen from Dallas county is in the collection of the 
United States National Museum. Osborn recorded the species as 
