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1931. A NEW PINE MOTH FROM CONNECTICUT. Wash. Ent. Soc. Proc., 33: 
196-197. 
Henry, H. K: 
1938. THE PINE SPITTLE BUG APHROPHORA PARALLELA SAY. Mass. Forest 
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HERBERT, F. B. 
1924. THE EUROPEAN ELM SCALE IN THE WEST. U.S. Dept. Agr. Bul. 1223, 
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HERRICK, G. W. 
1931. THE MAGNOLIA SCALE (NEOLECANIUM CORNUPARVUM THRO). Ent. Soc. 
Amer. Ann. 24 (2) : 302-305, illus. 
1935. INSECT ENEMIES OF SHADE-TREES. 417 pp., illus. Ithaca, N. Y. 
HETERICE, L. A. 
1941. LIFE HISTORY STUDIES OF NEODIPRION AMERICANUM (LEACH). Jour. 
Econ. Ent. 34: 373-3877, illus. 
HicH, M. M. 
1915. THE HUISACHE GIRDLER. U. S. Dept. Agr. Bul. 184, 9 pp., illus. 
Hopson A. C. 
1939. SARCOPHAGA ALDRICHI PARKER AS A PARASITE OF MALACOSOMA DISSTRIA 
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Horer G. 
1920. THE ASPEN BORER AND HOW TO CONTROLIT. U.S. Dept. Agr. Farmers’ 
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HOLLAND, W. J. 
1898. THE BUTTERFLY BOOK. Rev. Ed. 1931, 424 pp., illus. 
1903. THE MOTH BOOK. 479 pp., illus. 
HopKINsS, A. D. 
1899. REPORT ON INVESTIGATIONS TO DETERMINE THE CAUSE OF UNHEALTHY 
CONDITIONS OF THE SPRUCE AND PINE FROM 1880-1893. W. Va. 
Agr. Expt. Sta. Bul. 56, 461 pp., illus. 
1904. INSECT INJURIES TO HARDWOOD FOREST TREES. U.S. Dept. Agr. Year- 
book 1903 : 313-328, illus. 
1904. CATALOGUE OF EXHIBITS OF INSECT ENEMIES OF FORESTS AND FOREST 
PRODUCTS AT THE LOUISIANA PURCHASE EXPOSITION, ST. LOUIS, MO., 
1904. U.S. Div. Ent. Bul. 48, 56 pp., illus. 
1904. INSECT INJURIES TO FOREST PRODUCTS. U. S. Dept. Agr. Yearbook 
1904: 381-398, illus. 
1909. PRACTICAL INFORMATION ON THE SCOLYTID BEETLES OF NORTH AMER- 
ICAN FORESTS. I. BARKBEETLES OF THE GENUS DENDROCTONUS. U.S. 
Bur. Ent. Bul. 88, 169 pp., illus. 
1912 THE DYING HICKORY TREES—CAUSE AND REMEDY. U.S. Bur. Ent. Cir. 
144, 5 pp., illus. 
1915. A NEW GENUS OF SCOLYTOID BEETLES. Wash. Acad. Sci. Jour. 5: 
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Hoppine, G. R. 
1934. AN ACCOUNT OF THE WESTERN HEMLOCK LOOPER, ELLOPIA SOMNIARIA 
HULST, ON CONIFERS IN BRITISH COLUMBIA. Sci. Agr. 15: 12-29, 
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HorTtTes, F. C., and Frison, T. H. 
1931. THE PLANT LICE OR APHIIDAR, OF ILLINOIS. Ill. Nat. Hist. Surv. Bul. 
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Houser, J. S. 
1918. DESTRUCTIVE INSECTS AFFECTING OHIO SHADE AND FOREST TREES. 
Ohio Agr. Expt. Sta. Bul. 332: 161-487, illus. 
1927. ELLOPIA ATHASARIA WALK., A LOOPER ATTACKING HEMLOCK. Jour. 
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