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 at these points galls of the agamic generation were obtained and the agamic female was again bred. Triggerson's account furnishes many details of the life history of the species, and no attempt need be made here to give much more than descriptions of the galls and adults of the two generations.

According to Triggerson, the galls of this form were first visible about May 12; the adults emerge from May 21 (indoors) or May 29 (out-of-doors) until June 5. They oviposit immediately to produce the agamic aeneration.

Andricus fulvicollis form erinacei (Beutenmüller) Plate XXXI, Figure 34

Philonix fulvicollis, 1859, 5th Report on Noxious. .. Ins. N. Y., p. 783. , 1865, Proc. Ent. Soc. Phlla., IV, p. 353. , 1903, Psyche, X, p. 148. , 1906, Ins. Aff. Pk. & Woodl. Trees, II, p. 711. , 1909, Bull. Amer. Mus. Nat. Hist., XXVI, p. 254; 1918, Ent. News, XXIX, p. 328. , 1916, Hymen. Conn., p. 381.

Cynips q. erinacei, 1864, Proc. Ent. Soc. Phila., II, p. 483.

Terasfulvicollis, 1865, Proc. Ent. Soc. Phila., IV, p. 379.

Cynips (Teras) fulvicollis, 1881, U. S. Ent. Comm. Bull., VII, p.56.

Acraspis erinacei, 1881, Gen. Gallenbew. Cynip., p. 30. , 1885, Trans. Amer. Ent. Soc., XII, p. 295; 1887, Trans. Amer. Ent. Soc., XIV, p. 128; 1890, Colo. Biol. Assoc. Bull., I p. 38. , 1888, 27th Report Agric. Mich., p. 470; 1889, Psyche, V, pp. 186, 221; 1892, Proc. Iowa. Acad. Sci., I, part 2, p. 112. , 1890, 5th Report U. S. Ent. Comm., p. 106. , 1892, Bull. Amer. Mus. Nat. Hist., IV, p. 259, P1. xii, fig. 1; 1904, Amer. Mus. Nat. Hist. Guide Leaflet 16, p. 18; 1904, Amer. Mus. Journ., IV, p. 104, fig. 35. , 1893, Cat. Hyman., II, p. 64. , 1899, Trans. Kans. Acad. Sci., XVI, p. 203. , 1902, Gen. Ins., Hymen., Cynip., p. 58. , 1905, 29th Report Dept. Geol & Nat. Res. Ind., p. 832, fig. 25; 1910, Mich. Geol. & Biol. Surv. Publ. 1, p. 28. , 1906, 37th Report Ent. Soc. Ont., p. 70. , 1906, Ins. Aff. Pk. & WoodlTrees, II, pp. 619, 627. , 1915, Cat. Amer. Ins. Galls, pp. 15, 35. , 1918, Amer. Nat., LII, p. 157. , 1918, Field Book Ins., p. 462, P1.XCVII, fig. 4.

Biorhiza fulvicollis, 1885, Trans. Amer Ent. Soc., XII, pp. 296, 304. , 1890, 5th Report U. S. Ent. Comm., pp. 106, 110. , 1910, Das Tierreich, XXIV, p. 402.

Biorrhiza fulvicollis, 1893, Cat. Hymen., Cynip., II, p. 60. , 1902, Gen. Ins., Hymen., Cynip., p. 56.

Philonix erinacei, 1909, Bull. Amer. Mus. Nat. Hist., XXVI, p. 247 [first description of adult named erinacei], P1. XLIII, fig. 24. , 1910, Ins N. J., p. 598.. Cosens, 1912, Trans. Canad. Inst., p. 341, fig. 64.

Acraspis quercus-erinacei, 1910, Das Tierreich. XXIV, p. 413, fig. 118.