Sporozoa 277 



Fig. 6. 4. A-Q. Spores of different Gregarinida: A. Melamera reynoldsi, 

 x2880 (after Jones). B. Acanthospora repelini, x2170 (after Leger). C. 

 Machadoella triatomae, x2740 (after Reichenow). D. Stomatophora simplex, 

 xl200 (after Bhatia). E. Carcinoecetes hesperus, xl580 (after Ball). F. 

 Urospora rhyacodrili, about 23/tt long (after Gabriel). G, H. Gregarina 

 blattarum, with and without mucous sheath; x2770 (after Sprague). I. 

 Cystobia irregularis, x885 (after Minchin). J. Rhynchocystis porrecta, xlOOO 

 (after Troisi). K. Cephaloidophora communis, x29O0 (after Ball). L. Cera- 

 tospora mirabilis, schematic; 2770 approx. (after Leger). M. Diplocystis 

 schneideri, x2600 (after Kunstler). N. Cometoides capitatus, xl730 (after 

 Leger). O. Menospora polyacantha, 15x4^ (from Kamm, after Leger). P, 

 Q. Gregarinida rigida, spores in sheath as extruded from sporoduct (P), 

 and single spore (Q) about 8/i long (after Allegre). R. Everted sporoduct 

 in gametocyst of Gregarina blattarum, from living; optical section showing 

 expulsion of spores; x454 (after Sprague). S. Gametocyst (375/x) of Grc- 

 garina rigida, showing three everted sporoducts (after Allegre). 



