90 SPOROZOA. 



Identification Table of Families. 



1 (8). Sporonts in associations or solitary .... 2. 



2 (7). Sporonts in associations of 2 or 3 3. 



3 (4). Associations of 2 ; form syzygies early. 



Development intracellular. Epimerite 



absent or weakly developed. Gameto- 



eysts dehisce by simple rupture. Sporo- [Kanun. 



cyst ovoidal, with equatorial line .... Cephaloidophoridse * 



4 (3). Associations of 2 or 3. Development 



extracellular 5. 



5 (6). Epimerite a small simple papilla. No 



septum in satellites. Gametocysts de- 

 hisce by simple rupture. Sporocysts 



ellipsoidal. Entire life-cycle in a single [L^ger. 



host Didymophyidse * 



6 (5). Epimerite absent or weakly developed. 



Gametocysts dehisce by simple rup- 

 ture, setting free " gymnospores." 

 Cycle shows alternation of hosts Porosporidse"' Labbe. 



7 (2). Sporonts solitary or in associations up 



to 12. Epimerite simple, symmetrical. 

 Development extracellular. Gameto- 

 cysts dehisce by simple rupture or by 



spore-ducts. Sporocysts oval or [p. 96. 



barrel-shaped Gregarinidse Labbe, 



8 (1). Sporonts solitary 9. 



9 (10). Epimerite absent or rudimentary. De- 



velopment intracellular. Gametocysts 

 dehisce by simple rupture. Sporo- 

 cysts ovoidal, with equatorial line, not [Dub., p. 91. 

 extruded in chains Stenophoridse Leg. & 



10 (9). Epimerite more or less complex. Devel- 



opment extracellular 11. 



11 (20). Gametocysts dehisce by simple rupture 



or by means of a lateral pseudocyst ... 12. 



12 (17). Gametocysts dehisce by simple rupture. 13. 



13 (14). Epimerite a large cup bordered with 



hooks and placed on a long, slender [Leger. 



neck. Sporocysts crescentic MenosporidSB * 



14(13). Epimerite without a long neck. Sporo- 

 cysts crescentic 15. 



15 (16). Sporocysts irregular, biconical or cylin- [Leger, p. 107. 



dro-biconical, not provided with bristles. ActinocephalidSB 



16 (15). Sporocysts with equatorial and polar [Leger. 



spines Acanthosporidse * 



17 (12). Gametocysts dehisce by means of a 



lateral pseudocyst or by simple rupture. 18. 



18 (19). Epimerite asymmetrical, bearing digiti- 



form or root-like prolongations. Sporo- [Leger, p. 108. 



cysts elongate, cylindrical or ellipsoidal. DactylophoridSB 



19 (18). Epimerite symmetrical, with or without 



appendages. Sporocysts pouch-like, [A. Schneider, 



brown or black, in chains Stylorhynchidae * 



20 (11). Gametocysts dehisce by a single elon- 



gated spore-duct 21. 



21. Epimerite a small elevation with prongs 

 at its base. Development intracellular. 

 Sporocysts compressed, broadly spindle- 

 shaped, with median ridge on dorsal [Chak., p. 109. 

 surface Monoductid8B Ray & 



