1918.] NATURAL SCIENCES OF PHILADELPHIA. 113 



TiLLYARD, R. J. — 1915. On the Physiology of the Rectal Gills in the 

 Larvae of Anisopterid Dragonflies. Proc. Linn. Soc. New South Wales, XL, 

 pp. 422-437, PI. XLVII, December 10. 



— 1916. Further Observations on the Emergence of Dragonfly-larvae from 

 the egg with Special Reference to the Problem of Respiration. Op. cit., XLI, 

 pp. 388-416, 5 text figures. September 13. 



— 1917. On the Morphology of the Caudal Gills of the Larvae of Zygopterid 

 Dragonflies. Introduction. Part I (General Morphology), and Part 11 

 (Studies of the Separate Types). Op. cit., XLII, pp. 31-112, Pis. I-VI, 32 text 

 figures. July 11. (Appeared after the conclusion of Mr. Bodine's work, 

 but added here for the sake of completeness of reference.) 



