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PACIFIC SCIENCE, Vol XX, April 1966 
Fig. 14. Reproduction of Buchert’s figures. Row IV, production of tentacular hydranths from spherules; 
Row V, frustule budding and formation of tentacular hydranths; and Row VI, tentacular hydranth budding. 
A indicates tentacular hydranth connecting atentacular and tentacular stages, and B indicates tentacular hydranth 
connecting atentacular stages (Fig. 13 D) . 
whose generous hospitality enabled certain of us 
attending the XVI International Congress of 
Zoology to meet and to discuss Craspedacusta . I 
wish to credit Dr. Yanagita for improving 
the reliability of my nematocyst measurements. 
Above all others, I wish to thank Dr. C. F. Lytle 
who, although about to publish an account of 
tentacular hydranths which appeared in his cul- 
ture of C. sowerbyi while he was at Indiana 
University, graciously forwarded copies of the 
papers by Buchert (I960), Fuhrmann ( 1939), 
and Rohat (1961). 
REFERENCES 
Rrandwein, P. 1937. The culture of some mis- 
cellaneous small invertebrates. In: P. S. Gaits-- 
off et a.l, ed., Culture Methods for Inverte- 
brate Animals. Comstock Publishing Com- 
pany, Ithaca, pp. 143-144. 
Browne, E. T. 1906. On the freshwater medusa 
liberated by Micro hydra ryderi Potts, and a 
comparison with Limnocodium . Quart. J. 
Microscop. Sci. (n.s.) ; 63 5-645. 
Buchert, A. I960. Craspedacusta sowerbyi 
Lank., eine Siisswasser Meduse und ihre bei- 
