^ORTH AMERICAN BUPRESTID BEETLES 29 



Variations. — Length 7 to 8 millimeters. The coloration is rather 

 uniform on the specimens examined, but in some examples the 

 pronotum is widest at the middle, with the sides regularly rounded 

 from the apical angles to the base, whereas in other examples the 

 pronotum is widest near the apical third, and the sides are more 

 obliquely narrowed posteriorly. The depressions on the pronotum 

 are also quite variable, usually the two anterior ones are deep and 

 distinct, but occasionally these depressions are entirely absent. 



Host. — Makes galls or conspicuous swelling on the twigs and small 

 branches of living iromvood {Ostrya virginiana (Miller) Koch.) 



6. AGRILUS RUFICOLLIS (Fabricius) 



Figure 4 



Buprestis ruficollis Fabricius, Mant. Ins., vol. 1, 1787, p. 184, no. 85. — 

 Gmelin, Linnaeus, Syst. Nat, 13 ed., vol. 1, pt. 4, 1788, p. 1937, no. 

 96.— Olivier, Entomol., vol. 2, gen. 32, 1790, no. 106, p. 78, pi. 9, fig. 101; 

 Bne. Method., vol. 5, 1790, p. 238, no. 129.— Fabricius, Bnt. Syst., vol. 

 1, pt. 2, 1792, p. 214, no. 121; Syst. Eleuth., vol. 2, 1801, p. 213, no. 

 152.— Herbst, Nat. Syst. Ins. Kafer, vol. 9, 1801, pp. 249-250, pi. 155, 

 figs. 9a, 9& (identification?). — Melsheimer, Cat. Ins. Penna., 1806, p. 

 46, no. 1026.— Schonherr, Syn. Ins., vol. 1, pt. 3, 1817, p. 260, no. 243.— 

 Sturm, Catal. Ins. Sammlung, 1S26, p. 105. 



Buprestis (Teres) ruficollis (Fabricius) Harris, New England Farmer, vol. 

 8, ser. 1, 1829, p. 2-3 (new subgenus). 



Agrilus ruficollis (Fabricius) Dejean, Cat. Coleopt, 2 ed. 1S33, p. 82; 

 ed. 3, 1S37, p. 93.— Say, Trans. Amer. Pbilos. Soc, vol. 6, new ser., 

 1836, pp. 161-162. — Mannerheim, Bull. Soc. Imp. Nat. Moscou, vol. 10, 

 no. 8, 1837, p. 109.— Castelnau and Gory, Mon. Bupr., vol. 2, 1838. 

 Agrilus, pp. 60-61, pi. 13. fig. 78, addenda p. 7. — Erichson, Wiegmann 

 Arch, fiir Naturg., vol. 2, 1840, p. 240. — Sturm, Catal. Kafer Sammlung, 

 1S43, p. 63. — Haldeman, Amer. Quart, Journ. Agric. and Sci., vol. 4, 

 no. 8, 1846, pp. 300-301, fig. — ; Trans. N. Y. State Agric. Soc. for 1846. 

 vol. 6, 1847, p. 373, fig. 1. — White, Nomenclature Coleopt. Ins. in Brit. 

 Mus., pt. 3, 1848, p. 37.— LeConte, Proc. Acad. Nat. Sci. Phila., vol 9. 

 1857, p. 9: Say's Writings, vol. 2 (Bailliere Bros. ed. 1859; Cassino 

 and Co.. ed. 1883), p. 595; Trans. Amer. Philos. Soc, vol. 11, new ser., 

 1859, p. 243.— Glover, U. S. Dept. Agric. Rept. for 1868 (1869), p. 

 92. fig. 101.— Riley, Amer. Ent., vol. 2, 1870, p. 128, fig. 90.— Walsh 

 and Riley. Amer. Ent.. vol. 2. 1870, pp. 103-104, figs. 68-69.— Pettit, 

 Canad. Ent., vol. 2, 1870, p. 102. — Le Baron, Prairie Farmer, vol. 42. 

 1871, p. 122.— Glover, Rept. U. S. Conun. Agric. for 1870 (1871), p. 

 67, fig. 7.— Crotch, Proc. Acad. Nat. Sci. Phila., vol. 25, 1873, p. 92.— 

 Saunders, Rept. Ent. Soc. Ontario for 1873 (1S74), p. 8, figs. 2-4.— Le 

 Baron, 4th Ann. Rept. Ins. Illinois, 1874. pp. 94, 96.— Thomas, 6th 

 Rept. Illinois State Ent., 1877, pp. 114-115.— Perkins, 4th Rept. Ver- 

 mont Board Agric, 1877, p. 153. — Hoffmeister, Ann. Rept. Iowa State 

 Hort. Soc. for 1877 (1878), p. 244.— Glover, Illustr. N. Amer. Ent., 

 1878, Coleopt., pi. 11, fig. 4; pi. 41, fig. 9 (no text).— Schwarz. Proc 

 Amer. Philos. Soc, vol. 17, 1878, p. 452. — Hubbard and Schwarz, Proc 

 Amer. Philos. Soc. vol. 17, 1878, p. 656. — Lintner, Cultivator and 



