134 IOWA STUDIES IN NATURAL HISTORY 
DE GEER, C. 
1773. Mémoires pour servir a l’histoire des Insectes. Vol. IIT. Stockholm. 
FABRICIUS, J. C. 
1775. Systema Entomologiae, etc. Lipsiae. 
1781. Species Insectorum, etc., Vol. II, Bonn. (In 2 volumes; Hemiptera 
in Vol. II.) 
1794. Entomologia Systematica, etc., Vol. IV. Hafniae. 
1798. Entomologia Systematica, etc., Supplement. Hafniae. 
1803. Systema Rhyngotorum, etc. Brunsvigae. 
FIEBER, F'. X. 
1861. Die europaischen Hemiptera. Wien. (First published in parts; 
pages 1-112 appeared in 1860; the remainder in 1861.) 
Pyneu, Ac 
1856. Third Report. Transactions of the New York State Agricultural 
Society. Vol. XVI. Albany. 
FORBES, 8. A. 
1905. Twenty-third Report of the State Entomologist on the Noxious and 
Beneficial Insects of the State of Lllinois. A Monograph of Insects 
Injurious to Indian Corn. Part II. Chicago. (Twelfth Report of S. A. 
Forbes. ) 
GARMAN, H. 
1891. Oebalus pugnax an Enemy of Grasses. Psyche, Vol. VI. Boston. 
GERMAR, E. F. 
1839. Beitrage zu einer Monographie der Schildwanzen. 
Zeitschrift fiir die Entomologie, Tome I. Leipzig. 
GILLETTE, C. P. and BAKER, C. F. 
1895. A Preliminary List of the Hemiptera of Colorado. Colorado State 
Agricultural College. The Agricultural Experiment Station. Bulletin 
No. 31, Technical Series No. 1. Fort Collins. 
GLOVER, T. 
1868. Report of the Entomologist. Report of the United States Depart- 
ment of Agriculture for 1867. Washington. 
GUERIN, M. F. E. 
1857. Ramon de la Sagra’s Historia fisica, politica y natural de la Isla 
de Cuba, Vol. VII. Paris. (Insects in Volume VII.) 
Haun, C. W. 
1826. Icones ad Monographiam Cimicum. Nurnberg. 
1831. Die Wanzenartigen Insecten, Vol. I. Niirnberg. 
1834. Ibid. Vol. II. 
1835. Ibid. Vol. III to p. 32. 
HERRICH-SCHAEFFER, G. A. W. 
1836. Die Wanzenartigen Insecten. Vol. ITI. Nirnberg. 
1839. Ibid. Vols. IV and V. 
1842. Ibid. Vol. VI. 
1844. Ibid. Vol. VII. 
1848. Ibid. Vol. VIII. 
1853. Ibid. Vol. IX. 
1853. Verzeichniss. 
HORVATH, G. 
1908. Remarques sur quelques Hémiptéres de 1’Amerique du Nord. An- 
nales Historico—Naturales Musei Nationalis Hungarici, Val. VI. Buda- 
pest. 
Howargp, L. O. 
1895. The Harlequin Cabbage Bug, or Calico Back. United States De- 
