TUNG, T. C. Dr, Prof., F.I. I.E. — Lab. of Developm. Physiol., Inst, of 

 Exper. Biol., Acad. Sinica, 320 Yo Yang Road, SHANGHAI, China 

 — Marine Biol. Lab., TSINGTWO, China 



URBANI, E. Prof., M.I. I.E. — 1st. di Zool.. Univ. di Camerino, CAME- 

 RING, Italia 



URBANI— MISTRUZZI, Mrs. L. Dott. — 1st. di Zool., Univ. di Came- 

 rino, CAMERINO. Italia 



WIGGLESWORTH, V. B. F.I.I.E. — Zool. Dept, Univ. of Cambridge. 

 Downing St, CAMBRIDGE, England 



YAMADA, T. D.Sc, F.I.I.E., Prof. — Biol. Inst.. Fac. of Sci.. Nagoya 

 Univ., Chigusa-Ku, NAGOYA, Japan 



YAO, T. Ph.D. — Lab. of Developm. Physiol., Inst, for Exper. Biol., Acad. 

 Sinica, 320 Yo Yang Road, SHANGHAI, China 



