8 BRITISH TYROGLYPHID^S. 



dredge had picked them off the surface of the water 

 where they were floating, or they had got on to the 

 material brought in while it was being examined. 

 Numerous other instances might be quoted ; therefore, 

 when extremely unlikely localities are quoted by 

 persons who have not much knowledge of the habits 

 and characteristics of the creatures, a certain amount 

 of caution should be exercised before trusting in them 

 implicitly. 



