24 J. S. DUNKERLY, PRESENT KNOWLEDGE OF CHOANOFLAGELLATA, 



not point to any particular relationships, being itself a peculiar 

 type. 



To the earnest microscopist desirous of investigating structures 

 difficult of interpretation the author can heartily recommend 

 this group for research. 



Explanation of Plate I. 



Fig. 1. Monosiga ovata, xl500. 



2. Codonosiga bottytis, stained carmalum, showing blepharo- 

 plast at base of Hagellum, x 1000. 



3. Scdpingoeca napiformis, France, from Plymouth, x 1200. 

 ,, 4. Scdpingoeca ampulla, S. Kent, from Plymouth, x 1200. 

 ,, 5. Polyoeca dumosa, from Plymouth, x 1200 [from A7in. and 



Mag. Nat, Hist., Ser. 8, Vol. V., February 1910]. 



Figs. 1 , 3, 4 and 5 are drawn from living specimens. 



)> 



55 



Journ. Quekett Microscopical Club, Ser. 2, Vol. XI., iVo. i^G, April 1010. 



