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 instances of dimorphism, or of a double-brooded condition without an accompanying heterogeny, among the species of the group.

Andricus futilis (Osten Sacken)

—Ontario (Jarvis). New Hampshire: Wolfeboro. Massachusetts: Magnolia (Clarke); Boston, Blue Hills, Sharon, Marthas Vineyard; Springfield (Stebbins). Connecticut: Waterbury (Bassett). New York: New York City (Beutenmüler). New Jersey: throughout (Smith). Pennsylvania: Shawnee (Thompson). District of Columbia: Washington (Osten Sacken). Maryland: Plummer's Is. (Weld). Ohio: Sandusky (Sears). Indiana (Cook). Illinois: Fort Sheridan (Weld). Michigan: Ionia Co. (Gillette).

Andricus futilis form futilis (Osten Sacken) Plate XXX, Figures 28 and 29

Cynips quercusfutilis, 1861, Proc. Ent. Soc. Phila., I, p. 64.

Cynips quercus papillata, 1861, idem, I, p. 64.

Cynips q. futilis, 1863, Proc. Ent. Soc. Phila., II, p. 329; 1873, Can. Ent.,V, p. 92; 1873, ProC. Ent. Soc. Lond., p. xv.

Cynips futiilis, 1865, Proc. Ent. Soc. Phila., IV, p. 339.

Cynips futilis, 1865, idem, IV, pp. 346, 349, 352, 355.

Cynips papillata, 1865, idem, IV, pp. 339, 346, 349, 352, 355.

Andricus futilis, 1865, idem, IV, p. 379. , 1889, Psyche, V, p. 185. , 1893, Cat. Hymen., II, p. 88. , 1908, Report Ent. Soc. Ont., p. 86, P1. B, fig. 4., 1904, Bull. Amer. Mus. Nat Hist., XX, p. 27; 1904, Amer. Mus. Nat. Hist. Guide Leaf. 16, p. 13, fig., 1906, Ins. Aff. Pk. & Woodl. Trees, II, p. 710; 1918, N. Y. State Mus. Bull. CC, p. 88, fig. 83, P1. II. fig. 3., 1910, Mich. Geol. & Biol. Surv. Pubil. I, p. 27. , 1914, Ohio Nat., XV, p. 381, fig. 21.

Andricus papillata, 1865, Proc. Ent. Soc. Phila., IV, p. 379.

Andricus (Callirhytis) futilis, 1881, Gen. Gallenbew. Cynip., p. 28. , 1882, Amer. Nat., XVI, p. 246. , 1885, Trans. Amer. Ent. Soc., XII, pp. 294, 295. , 1890, 5th Report. U. S Ent. Comm., p. 105. , 1892; Bull. Amer. Mus. Nat. Hist., IV, p. 254, P1. II, fig. 1., 1916, Hymen. Conn., p. 433.

Cynips (Andricus) papillata, 1881, U. S. Ent. Comm. Bull., VII, p. 56.

Cynips (Andricus) futilis, 1881, U. S. Ent. Comm. Bull., VII, p. 56.

Andricus (Callirhytis) papillatus, 1885, Trans. Amer. Ent. Soc., XII, p. 295. , 1890, 5th Report U. S. Ent. Comm., p. 105. , 1892, Bull. Amer. Mus. Nat. Hist., IV, p. 255.

Callirhytis futilis, 1885, Trans. Amer. Ent. Soc., XII, p. 303; 1887, idem, XIV, p. 129. , 1889, Psyche, V, pp. 235-237. , 1890, 5th Report U. S. Ent. Comm., p. 109. , 1895, Sci., I, p. 461; 1895, Proc. Ent Soc. Wash., III, p. 261. , 1910, Gen. Ins., Hymen., Cynip., p. 66. , 1910, Ins. New Jersey, p. 601. , 1910, Springfield (Mass.) Mus. Bull., II, p. 27. 1915, Cat. Amer. Ins. Galls, p. 13, P1. v, fig. 49. LUTZ, 1918, Field Book Ins., p. 462, P1. xcvi, fig. 4.

Callirhytis papillatus, 1887, Trans. Amer. Ent. Soc., XIV, p. 129. , 1902, Ohio Nat., II, p. 269, fig. 30; 1903, idem, III, p. 427, fig. 64; 1904, idem,