578 



articles have appeared since that date, and an attempt has also been 

 made to include these in this bibliography. 



NYMPHS 



Backhoff, Paul 



'lo. Die Entwicklung des Copulationsapparates von Agrion. Ein 

 Beitrag zur postembryonalen Kntwicklungsgeschichte der Odo- 

 naten. Zeit. wiss. Zool., 95 : 647-706, pi. 21. 



Balfour-Browne, F. 



'09. Life-history of the agrionid dragonfly. Proc. Zool. Soc. Lon- 

 don, 1909; 253-^85, pis. 21,, 24. 



Bervoets, R. 



'13. Sur le systeme tracheen des larves d'Odonates. Ann. Biol. 

 Lacustre, 6: 15-32, figs. 1-3. 



Borner, C. 



'09. Neue Homologien zwischen Crustaceen und He.xapoden. Die 

 Beissmandibel der Insektcn und ihre phylogenetische Bedeu- 

 tung. Archi- und Metaptcrygota. Zool. Anz., 34: 100-125. 



Brimley, C. S. 



'04. Xotc on duration of larval stage of Odonata. Ent. News, 



15: 136. 



Butler, Hortense 



'04. The labium of the Odonata. Trans. Am. Ent. Soc, 30 : 1 1 1- 

 134, pis. 2-7. 



Calvert, P. P. 



'00. Moults in the Odonata. Entomologist, 33: 350. 



'11. Studies on Costa Rican Odonata. Ent. News, 22:49-64, 



pis. 2, 3. 

 '15. Studies on Costa Rican Odonata. Ent. News, 26: 385-395, 



pis. 15-17- 



Forbes, S. A. 



'88. On the food relations of fresh-water fishes. Bull. 111. State 

 Lab. Nat. Hist, 2:485. 



Qilson, G., and Sadones. J. 



■96. Larval gills of Odonata. Trans. Linn. Soc. London. 25 : 413. 



Hagen, H. 



'80. Essai d'un svnopsis des larves des Caloptervgines. Ann. de 

 la Soc. Ent. de Belgique, 23 : LXV-LXVIL 



