ATTEMPT TO EB-CLASSIFY THE ROTIFERS. 351 



in all but three, and in two of these the rami and unci are 

 the prominent parts, while the third is distinguished by the 

 close connection of the mallei and rami. 



The typical trophi then may be named as follows : 



1. Malleate. 



Mallei stout ; manubria and unci of nearly equal length ; 

 unci 5- to 7-toothed; fulcrum short; as in Brachionus urceo- 

 laris, Fig. 14, a, b. 



2. Sub-Malleate. 



Mallei slender ; manubria about twice as long as unci ; unci 

 3- to 5-toothed; as in Euchlanis deflexa, Fig, 14, c, d. 



3. Virgate. 



Mallei rod-like ; manubria and fulcrum very long ; unci 1- 

 or 3-toothed; as in Notommata petromyzon. Fig. 14, e. 



4. Forcipate. 



Mallei rod-like ; unci pointed or evanescent ; rami much 

 developed, and used as a forceps; as in Diglena forcipata. 

 Fig. 14, F. 



5. lucudate. 



Rami highly developed into a curved forceps ; mallei eva- 

 nescent ; fulcrum stout ; as in Asplanchna priodonta, Fig. 

 14, G. 



6. Uncinate. 



Unci 2-toothed; manubria evanescent; incus slender; as in 

 Stephanoceros Eichornii, Fig. 14, h. 



7. Ramate. 



Rami sub-quadrantic, each crossed by 2 or 3 teeth ; manu- 

 bria evanescent; fulcrum rudimentary; as in Philodina 

 roseola, Fig. 14, i. 



VOL. XXIV. NEW SER. B B 



