BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 81 
811. Osborn, H. External parasites of domestic animals. <Bull. 
Iowa Agric. College, August, 1881, Ho. 2, pp. 67-79. 
Characters and habits of various Pediculidse, Mallophaga, Sarcoptidte, Hip- 
poboscidse, and Ixodidse; remedies. 
812. Osborn, H. The ash sawfiy. Seland^ia barda (Say). <Bull. 
Iowa Agric. College, August, 1884, Ho. 2, pp. 80-83, pi. 3, fig. 9. 
<Can. Ent., August, 1884, v. 16, pp. 148-162, fig. 6. <15th 
Aun. Kept. Ent. Soc. Ontario, 1885, pp. 32-34, fig. 5. 
Characters, habits, and ravages of Selandria [= Monophadnus] tardus; para¬ 
sites ; means against. 
813. Osborn, H. Hotes on locust parasite. <Bull. Iowa Agric. Col¬ 
lege, August, 1884, Ho. 2, pp. 83-86. 
Entomophthora calopteni, a true parasite of Caloptenus, 
814. Osborn, H. Insects of the orchard. <Bull. Iowa Agric. College, 
August, 1884, Ho. 2, pp. 87-97. <Trans. Iowa State Hortic. 
Soc. for 1883,1884, v. 18, pp. 510-521. 
Habits and ravages of Nysius destructor [=angustatus], Lygus lineolaris 
[—pratensis], Metapodius femoratus, Cicada tibicen, C. [= Tibicen] septen- 
decirn, Ceresa bubalus, C. taurina, Thelia cratcegi, Jassus [= Thamnotettix] 
clitelJaria, J. [= Phlepsius] irroratus, Psylla pyri, Aphis mail, A. malifolicB 
[=»wii], A. prunifolice, Myzus cerasi, Schizoneura lanigera, Callipterus 
muci dug, Aleurodes sp., Chionaspis furfurus, Mytilaspispomorum, Aspidiotus 
perniciosus, Lecanium oleic, L. pyri, Phlceothrips mail, Thrips tritioi, and 
Heliothrips hcemorrhoidalis. 
815. Osborn, H. The pine louse. <Bull. Iowa Agric. College, August, 
1884, Ho. 2, pp. 97-105, pi. 3, fig. 10. 
Characters, life history, and enemies of Chernies pinicorticis. 
816. Osborn, H. Insecticides and their application. <Bull. Iowa 
Agric. College, August, 1884, Ho. 2, pp. 105-107. 
Synopsis of the more commonly used insecticides and the most feasible 
methods of applying them. 
817. Osborn, H. Hotes on Mallophaga and Pediculidte. <Can. Ent., 
October, 1884, v. 16, pp. 197-199. 
Relates chiefly to the habitat of species found at Ames, Iowa. 
818. Osborn, H. External parasites. <Proc. 10th Annual Meeting 
Iowa State Improved Stock Breeders’ Assoc, for 1883, 1884, 
pp. 126-127. 
A reprint of No. 811. 
819. Osborn, H. Leaf and gall mites. <Trans. Iowa State Hortic. 
Soc. for 1883, 1884, v. 18, pp. 127-135. 
Characters of Phytoptus pyri, P. quadripes, P. spp. from ash, elm, and box 
elder; remedies for mites. 
820. Osborn, H. Report of experiments at Ames, Iowa. <Bull. Ho. 
11, Div. Ent. U. S. Dept. Agric. [26 February], 1886, p. 23-26. 
See Part 3, No, 2344, p. 351. 
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