HiLGENDORF. — On Ncw Zealand Eotifera. Ill 



3. Virgate. — Mallei rod-like ; manubria and fulcrum very- 

 long; unci 1- or 2-toothed. {Notommata.) A common type. 



4. Forcipate. — Mallei root-like; unci pointed or evan- 

 escent ; rami much developed, and used as forceps. (Diglena.) 

 Another common type. 



5. Incudate. — Eami highly developed into a curved forceps ; 

 mallei evanescent ; fulcrum stout. [Asylanclma.) 



6. Uncinate. — Unci 2-toothed; manubria evanescent; 

 incus slender. {Steplianoceros.) 



7. Hamate. — Eami subquadratic, each crossed by 2, 3, or 

 4 teeth; manubria evanescent; fulcrum vestigial. (Philodina.) 



Trophi of Brachionus urceolaris : c, d = malleus, e, f = incus, d =« 

 uncus, c = manubrium, e = rami, / = fulcrum. 



The following is the order observed in the description 

 of each species : Specific characteristics ; length ;'■'■ colour ; 

 general shape ; special shape and proportions of body, foot 

 and toes, and head ; corona and ciliary wreath ; lorica ; 

 mouth and gullet ; mastax ; the other parts of the alimentary 

 canal ; musculature ; glands ; brain and sense-organs ; excre- 

 tory system ; reproductive system ; movements, habit, and 

 habitat. 



Order BDELLOIDA. 



Family Phillodinid^. 



Genus Rotifer. 



Generic characteristics : Eyes two, within the frontal 

 column. 



I. Rotifer macrunis, Schrank. Plate VIII., figs, i., i.a. 



Specific characters: Body white, hyaline at ends, plump 

 and round, merging rather gradually into a very long and 

 tapering foot. Corona large. Spurs small. Frontal column 

 long, cylindrical, truncate. Dorsal antenna of moderate length. 

 Eyes small and round. Teeth two. Differs from English 



* Having reason to believe that some of my measurements of length 

 were not quite accurate, I have left this detail out of all my descriptions, 

 awaiting more accurate observation. 



