THH ROTIPERA ; 
OR 
WHEEL-ANIMALCULES. 
BY 
C. T. HUDSON, LL.D. Canras. 
ASSISTED BY 
P. H. GOSSE, F.B.S. 
WITH ILLUSTRATIONS. 
IN TWO VOLUMES. 
TEXT. 
LONDON : 
LONGMANS, GREEN, AND CO. 
1886. 
All rights reserved, 
