

TABLE OF CONTENTS 



VOLUME IV 



NUMBERS PAGES 



1 Life History Studies on Montana Trematodes. By Ernest Carroll Faust. 



With 9 plates and one text figure 1-120 



(Distributed March 6, 1918) 



2 The Goldfish (Carassius carassius) as a Test Animal in the Study of Toxicity. 



By Edwin B. Powers. With graphs and tables 121-194 



(Distributed July 28, 1918) 



3 Morphology and Biology ot Some Turbellaria from the Mississippi Basin. 



By Ruth Higley. With 3 plates 195-288 



(Distributed December 31, 1918) 



4 North American Pseudophyllidean Cestodes from Fishes. By Arthur Reuben 



Cooper. With 13 plates 288-5^2 



(Distributed May 31, 1919) 



