124 VIGNETTES FROM INVISIBLE LIFE. 



there is this rather profuse gelatinous investment. 

 But in Mcglatrocha the aggregation is centred 

 to a fine point on a leaf or stem of a plant, 

 from which they radiate in all directions. They 

 will attach themselves thus to the glass sides of 



FIG. 23. Mcgalotrocha (albo-flavicans). 



a zoophyte trough, and in this condition form a 

 circular colony. 



The Oonochilus is found only in ponds and still 

 water, while Lacinularia and Megalotroclia live in 

 gently -running streams. Yet, although there may 

 not he much danger of confounding the two latter 

 with the former, there is so great a likeness hetween 

 themselves, that, unless one gets acquainted with 

 their specific minute differences, they may easily he 



