100 DROPS OF WATER. 



die, the bodies float, and give the surface of the 

 water a green coating. They are compound, like 

 the rest of the family, but there are never more 

 than eight individuals in the lorica. Each has a 

 beautiful red eye, which is seen even after death, 

 and a double proboscis, but no tail. 



Spliterosira volvox is the only species of the 

 next genus. It is distinguished by possessing a 

 pale green globular body, an eye, and a single 

 proboscis, but no tail. It divides in an irre- 

 gular manner, within the large transparent 

 globe which covers the whole ; for it is often 

 found, that some of the young are simple, 

 others already in clusters, and some oblong. 

 They are found generally in clear water, or 

 turf- water, and are often as large as those of 



