374 INSECTS. 



are flat, translucent, and short-legged. They seem to 

 belong to almost every known animal, and, in some 

 cases, more than one species are found on the same 

 animal. With the Nirmi, whatever may be the natural 

 prejudice entertained against them, under the microscope 

 a world of beauty and variety is revealed in their forms 

 and structure. 



