EXPLANATION OF F1GURES. 
Fig. 1. Ephydatia mülleri Liebk. from the Spree, 
Berlin, a, b, skeleton spicules or oxeasx 165 c—f 
amphidisks; X 370 (From specimen sent's Prof. W. 
Weltner) 
Fig. 2. E. mülleri var. behningi nov. a, b, oxeasx 165 
c. f, amphidisks X 370 (From Dr. Behning’s specimen 
from Volga). 
Fig. В E. mülleri. Form A, Vejdovsky, a, b, oxeasx 165 
c —f amphidisks X 37C. (From Dr Behning's specimen 
from Volga). 
Fig. 4. E. mülleri from Niankow (var u а aus Niankau) a. 
b, oxeasx 165. c—d amphidisksX 370 (From speci¬ 
men in „Carter Coli“ Brit. Mus.). 
я 
/ 
