100 NATURAL HISTORY 



angle. It is of a green colour, with a few diaphanous 



sacs. 



171. GoNiUM hz/alinuTHy E. The crystal Gonium. — 

 (New species.) This and the breast-plate Gonium are 

 the only two species admitted into this genus by Ehren- 

 berg. Size of cluster, 1 -2000th of an inch. 



