HYMENOPTERA. v3} 
OstEN: Sacken, C. R.—Contributions to the natural history of the 
Cynipide of the United States. <Proc. Ent. Soc. Phila., 1, pp. 
338-49, 1863-1864; Iv, pp. 381-380, 1865; Trans. Amer. Ent. Soc., 
1, pp. 54-64, 1870-1871. 
Continuation of the foregoing paper, both containing valuable contribu- 
tions to the classification of genera and species. 
Wazsu, B. D.—On dimorphism in the Hymenopterous genus Cynips; 
with an appendix, containing hints for a new classification of 
Cynipide, including descriptions of several new species inhabit- 
ing the oak galls of Illinois. <Proc. Ent. Soc. Phila., m, pp. 
443-500, 1863-1864. 
Mayr, G.—Die Genera der gallenbewohnenden Cynipiden. <20ter 
Jahresbericht der Communal-Oberrealschule im I. Bezirk. Wein, 
1881. 
Asumeab, W. H.—A bibliographical and synonymical catalogue of 
the North American Cynipide, with description of new species. 
<Trans. Amer. Ent. Soc., xm, pp. 291-304, 1885. 
Synopsis of the North American subfamilies and genera of 
Cynipide. <Trans. Amer. Ent. Soc., xim, pp. 59-64, 1886. 
von Datxa Torre, K. W., et Kierrer, J. J—Fam. Cynipide. <Gen. 
Ins., Fasc. 9 & 10, pp. 84, pls. 3, 1902. 
Asumerap, W. H.—On the cynipidous galls of Florida, with deserip- 
tions of new species and synopses of the described species of 
North America. <Trans. Amer. Ent. Soc., xiv, pp. 125-158, 
1887. 
Guerre, C. P—A monograph of the genus Synergus. <Trans. 
Amer. Ent. Soc., xx11, pp. 85-100, 1896. 
BruTenMUtiter, W.—The North American species of Rhodites and 
their galls. <Bul. Amer. Mus. Nat. Hist., xxm1, pp. 629-651, 
1907. 
The species of Holcaspis and their galls. <Bul. Amer. Mus. 
Nat. Hist., xxvi, pp. 29-45, 1909. 
The species of Amphibolips and their galls. <Bul. Amer. 
Mus. Nat. Hist., xxvr, pp. 47-66, 1909. 
The North American species of Diastrophus and their galls. 
<Bul. Amer. Mus. Nat. Hist., xxvi, pp. 1385-145, 1909. 
The species of Biorhiza, Philonix, and allied genera and their 
galls. <Bul. Amer. Mus. Nat. Hist., xxv, pp. 2438-256, 1909. 
Some North American Cynipide and their galls. <Bul. 
Amer. Mus. Nat. Hist., xxvi, pp. 277-281, 1909. 
Treats of EHumayria, Belonocnema, Solenozopheria, and Compsodryce- 
nus, 
