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[193] WILLIAMSON, E. B. "The copulation of Odonata." Ent. News, 



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pp. 131133. 

 [195] . "On the manner of oviposition, and on the nymph of Tacho- 



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[199] . "Oviposition of Tetragoneuria." Ent. News, Philadelphia, 



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[200] . "The medio-anal link in Agrioninae." I.e., 1913, xxiv, 



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 [201] WILLIAMSON, E. B. and CALVERT, P. P. "Copulation of Odonata.'" 



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 [202] ZAWARSIN, A. "Zur Frage iiber den Bau de sensiblen Nervensystems 



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ADDITIONAL BIBLIOGRAPHY 



[In the following list are included a few publications of which the author 

 was unable to obtain copies or abstracts, and which, therefore, have not 

 been made use of in this book, together with all those recently-published 

 papers which have been received between the date of completion of the 

 text (March 1915) and the date of completion of the first proof-reading 

 '(July 1916).] 



BERVOETS, R. "Sur le Systeme Tracheen des Larves d'Odonates." Ann. 

 Biol. lacustre, 1913, vi, pp. 15 52. 



CALVERT, P. P. "Studies on Costa Rican Odonata, V VII. The Waterfall 

 Dwellers: Thaumatoneura." Ent. News, Philadelphia, 1914 5, xxv 

 and xxvr. (V. Imagos and Possible Male Dimorphism, xxv, pp. 337 

 348, 1 plate, Oct., 1914. VI. Transformation External Features and 

 Attached Diatoms of Larvae, xxvi, pp. 295 305, 1 plate, July, 1915. 



