19] 



STUDIES ON GREGARINES—KAMM 



19 



The epimerites of this family are surprisingly well correlated. The genera with short 

 necks form a regular succession; the simple globe (1) becomes slightly modified (2), (3); then 

 a disc develops at the base (4), (5), (6), (7), (8); with a style rising in the center (9), (10). 

 This seems to be the end of one line of development. 



The simple sessile or nearly sessile globule becomes spiny (12), (13); the spines become 

 simple digitiform processes or recurved hooks (14); the recurved hooks become attached to 

 the neck along their whole length (15). The processes change into long slender filaments (16) 

 — and probably (17) and (18). The neck becomes long and slender, and at the apex there 

 develops a tuft of short bristles (19), a flat disc with 8 to 10 peripheral digits (20), or stout 

 teeth (21). 



Table 5. S homing the Relationships Between the Genera in the Family Acanthosporidae 



Genus 



Epimerite 



Spores 



1. Acanthospora 



2. Corycella 



3. , Prismatospora 



4. Ancyrophora 



5. Cometoides 



Simple conical knob 



Globular, with 8 large recurved 

 hooks 



Subglobular, with 8 lateral re- 

 curved hooks 



Globular, with 5 to 10 backward- 

 ly directed digitiform processes 



Globe, with 6 to 8 long slender 

 filaments directed upward 



Biconical, row of equatorial and one 

 of polar spines 

 Biconical, one row of polar spines 



One row of spines at each pole. 

 Hexagonal 



Biconical, with one row of equato- 

 rial and one of polar spines. 



Cylindro-biconical, with one row of 

 polar and two of equatorial 

 spines 



Table 6. Showing Relationships Between the Genera in the Family Stylocephaiidae 



Genus 



Epimerite 



Spores 



Remarks 



I can see very little relationship between the genera of this family as a whole. (1), (2), 

 and (3) are related, as are (4) and (5), but the three groups seem to bear no epimeritic rela- 

 tionship whatever. The hat-shaped spores, however, connect the seemingly aberrant genus 

 (6), with the type. 



