8 BULLETIN 437, U. S. DEPARTMENT OF AGRICULTURE. , 



maple (Acer), dogwood (Comics), madrone (Arbutus), manzanita (Arctosta- 

 phylos), aster (Aster), and sagebrush (Artemisia). Kills many shrubs and 

 trees, often causing the formation of galls and checks in the wood. 



Brachys. Eastern and Central States, leaf-miner in leaves: Populus?, alder (Alnus), 

 Fagusl, chestnut (Castanea), oak (Quercus), Ulmus?, and Acer?. 



Pachyscelus. Eastern States, leaf-miner in leaves: Hicoriat, Quercus?, and Lespedeza. 



Note.— Host tree as given indicates, for bark and wood borers, that borer was actually taken from bark 

 and wood and not that the adult was resting on the bark or wood. 



REFERENCES TO IMPORTANT LITERATURE. 



(1) 18G9. Schiodte, J. C. 



Ud De Metamorphosi Eleutheratorum Observationes Bidrag til Insek- 

 ternes viklingshistoire. Pars 4. In Naturhist. Tidsskr., s. 3, v. 

 6, p. 353-378, 2 pi. 



(2) 1877. Perms, E. 



Larves des Coleopteres. 590 p., 14 pi. Paris. 



(3) 1889. Blanchard, F. 



A list of the Buprestidae of New England. In Ent. Amer., v. 5, no. 2, 

 p. 29-32. 



Notes on host trees of New England species. 



(4) 1889. Chittenden, F. H. 



Notes on the habits of Buprestidae. In Ent. Amer., v. 5, no. 12, p. 

 217-220. 



Notes on host trees of New York species. 



(5) 1893. Hopkins, A. D. 



Catalogue of West Virginia Forest and Shade Tree Insects. W. Va. 

 Agr. Exp. Sta. Bui. 32, p. 171-251. 



Notes on the habits and host plants of some tree-infesting species, p. 181-184. 



(6) 1893. Xambeu, Le Capitaine. 



Buprestides. In Moeurs et Metamorphoses D'Insectes, mem. 3, 1892- 

 1893, p. 202-252; (Suite) p. 54-124. 



(7) 1900. Chittenden, F. H. 



Food plants and injury of North American species of Agrilus. In U. S. 

 Dept. Agr. Div. Ent. Bui. 22, n. s., p. 56-68. 



Notes on habits and host plants of the species of the genus Agrilus, p. 64-68. 



(8) 1904. Hopkins, A. D. 



Catalogue of Exhibits of Insect Enemies of Forests and Forest Products 

 at the Louisiana Purchase Exposition, St. Louis, Mo., 1904. U. S. 

 Dept. Agr. Div. Ent. Bui. 48. 56 p., 22 pi. 



Notes on the habits and host plants of some tree- infesting species, p. 21, 22, 38, 

 39, and 46. 



(9) 1910. Burke, H. E. 



Injuries to forest trees by flat-headed borers. In U. S. Dept. Agr. Year- 

 book, 1909, p. 399-415, fig. 25-36. 



Notes on habits and host plants of some tree-infesting species. 



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