544, 
045. 
546. 
DAT. 
548. 
049. 
990. 
ool. 
D02. 
Dd3. 
554. 
555. 
556. 
557. 
558. 
542 
Morrison, H. 
1928. A classification of the higher groups and genera of 
the coccid family Margarodidae. U.S. Dep. Agr. 
Tech. Bull. 52, 240 p., illus. 
, and Morrison, E. 
1927. The Maskell species of scale insects of the sub- 
family Asterolecaninae. U.S. Nat Mus. Proc. 71 
(Art. 17) No. 2689: 1-65, illus. 
Morse, A. P. 
1920. Manual of the Orthoptera of New England. Boston 
soc. Nat: iste erocy so 197—556-llus: 
Moser, J. C. 
1965. The interrelationships of three gall makers and 
their natural enemies, on hackberry (Celtis occt- 
dentalis L.) N. Y. State Mus. and Sci. Serv. Bull. 
402, 95 p., illus. 
Mosher, F. H. 
1915. Food plants of the gypsy moth in America. U.S. 
Dep. Agr. Bull. 250: 389, illus. 
Muesebeck, C. F. W. 
1918. Two important introduced parasites of the brown- 
tail moth. J. Agr. Res. 14: 191-206. 
, Krombein, K. V., and Townes, H. K. 
1951. Hymenoptera of America north of Mexico—Synop- 
tic Catalog. U.S. Dep. Agr. Monogr. No. 2, 1420 p. 
Munroe, E. 
1959. Canadian species of Dioryctria Zeller (Lepidoptera: 
Pyralidae). Can. Entomol. 91(2): 65-72, illus. 
Nagel, R. H., McComb, D., and Knight, F. H. 
1957. Trap tree method for controlling the Engelmann 
spruce beetle. J. Forest. 55: 894-898. 
Nash, R. W. 
1934. The willow flea weevil, Orchestes rufipes LeC., and 
its control in Maine. J. Econ. Entomol., 27: 236- 
239: 
1989. The yellow-headed spruce sawfly in Maine. J. Econ. 
Entomol. 32: 330-334, illus. 
Nat: Acad. of Sci., Nat. Res. Counc: 
1962-63. Evaluation of pesticide-wildlife problems. Natl. 
Acad. of Sciences—Natl. Res. Council Pub. 920—A, 
28 pp; 920—B, 53 pp., 1962; Pub._920-—C, 28 pp: 
1963. 
1966. Scientific aspects of pest control. Natl]. Acad. Sci.- 
Natl hes; Counc, Pub, 1402-470: 
, subcomm. on Insect Pests. 
1969. Insect-pest management and control. Princ. Plant 
and Anim. Pest Contr., Vol. 3, pub. 1695, 508 p., 
illus. 
Needham, J. G., and Claasen, P. W. 
1925. A monograph of the Plecoptera or stoneflies of 
America north of Mexico. Thomas Say Founda- 
tion, Entomol. Soc. Amer. II: 397 p., illus. 
