Occasional Papers of the Museum of Zoology 1 1 



Hosts of SrivCiEs of AcanthocephaIvA Known from 

 D0UG1.AS Lake 



The following table lists the host of each of the species of 

 Acanthocephala considered in this study and in each instance 

 indicates the relative abundance of the species of parasites in 

 individuals of the host species. 



Octospinifer macilcnfus 

 VanCleave 



Catostomus commersonii Moderate 



N eoechinorhynchus crassus Catostomus commersonii Moderate 

 VanCleave 



* Words indicating relative degree of infestation have been as- 

 signed arbitrary value as follows : 



Abundant — more than 50 parasites of the species under considera- 

 tion found in at least some individuals of the host. 



Moderate — of frequent occurrence but never more than 50 in a 

 • host individual. 



Slight — never more than 10 parasites of this species in an infested 

 host individual. 



Rare — not more than i or 2 parasites of this species in an infested 

 host individual. 



**One individual had a "Moderate" infestation. 



