255 



Motter, M. G. 



'98. A contribution to the study of the fauna of the grave. A 

 study of one hundred and fifty disinterments, with some ad- 

 ditional experimental observations. Journ. N. Y. Ent. Soc, 

 6: 201-231. 



Murtfeldt, M. E. 



'94. Acorn insects, primary and secondary. U. S. Dept. Agr., 

 Div. Ent., Insect Life, 6: 318-324. 



Needham, J. G. 



'98. Outdoor studies : a reading book of nature study. 90 pp. 



New York. 

 '00. The fruiting of the blue flag (Iris versicolor L.). Am. 



Nat., 34:361-386. 



Needham, J. G., and Betten, C. 



'01. Aquatic insects in the Adirondacks. Bull. N. Y. State 

 Mus., No. 47: 383-612. 



Ortmann, A. E. 



'06. The crawfishes of the State of Pennsylvania. Mem. Car- 

 negie Mus., 2 : 343"5 2 3- 



Osborn, H. 



'90. Report on insects of the season in Iowa. U. S. Dept. Agr., 



Div. Ent., Bull. No. 22: 18-41. 

 '92. Catalogue of the Hemiptera of Iowa. Proc. Iowa Acad. 

 Sci., Vol. I, Pt. II, pp. 120-131. 



Osborn, H., and Ball, E. D. 



'97a. Contributions to the hemipterous fauna of Iowa. Proc. 

 Iowa Acad. Sci., 4: 172-234. 



'97b. Studies of the life histories of grass-feeding Jassidae. 

 Bull. Iowa Agr. Exper. Sta., No. 34:612-640. 



•Osborn, H., and Sirrine, F. A. 



'94. Notes on injurious insects. Bull. Iowa Agr. Exper. Sta., 

 No. 23 : 881-905. 



Osten-Sacken, C. R. 



'82. Ueber das Betragen des calif ornischen fliigellosen Bittacus 



(B. apterus MacLachl.). Wiener Ent. Zeit, I Jahrg., pp. 

 123-124. 



