128 IIOFMEISTER ON THE HIGHER CRYPTOGAMIA. 



" tail," an unfortunate expression, inasmuch as the filiform 

 portions take the lead when the spermatozoon is in motion. 

 Thuret's figures of the spermatozoa of the Marchantieae are 

 very accurate ( ' Ann. cl. Sc. Nat.,' hi scr., xvi, pi. xii ; 

 Marchantia, Fegatella, and Targionia). 



