NOTES ANP MEMORANDA. 119 



flabelliform masses. The genera Volvox, Pandorina, Chlamydo- 

 coccus, &c., as well as Euglena and Phacus, are included by the 

 author among the animal Flagellata, and are copiously illustrated. 

 The antherozooids of Volvox are regarded merely as a smaller 

 generation of Flagellate individuals. The Ritter von Stein 

 regards this as probably the most interesting and important 

 section of his great work, and all will agree that its appearance 

 is most opportune. 



