DINOBRYON. 109 



having a lorica, which has the form of a little 



O ' 



pitcher ; the body still retains the power of chang- 

 ing its shape at will. One genus, Dinobryon, pos- 

 sesses more beauty than many others among these 

 interesting creatures. D. sertularia (Drop II. 

 fig. 11) is more like the flowering spike of some 

 grasses than anything else to which I can compare 

 it, except, perhaps, a branch of coral : the little 

 creature resembles the Euglena, mentioned before, 

 but is of a pale yellow, and has the power of 

 stretching itself out, and also assuming a globular 

 form within its lorica. It has a red eye, and a 

 long proboscis which assists not only in propel- 

 ling itself through the water, but also the others 

 to which it is attached. Each individual lorica 

 seems to have sprouted from the one below, till 



