EXPLANATION OF PLATES, III— IV. 



157 



entire spermatozoon in same stage as fig. 74. (homog. imra. i/iz, Oc. 4.) 



Fig. 69, b. Cross section of tail of spermatozoon at same stage as fig. 69 a, passing 

 through " Nebenkern." Stained with Hermann's triple staining and 

 drawn by Zeiss, homog. imm. 1/12, Oc. 5. 



F'g- 73- Similar section of a spermatozoon at the same stage as that shown by 

 fig. 70. Treated and magnified as above. 



Fig. 77. Similar section through tail of spermatozoon at same stage as that 

 shown by fig. 83. Treated and magnified as above 



Figs. 84-86. Various stages of " Hodenzwischenkorperchen." Figs. 84 and 85 

 stained with Hermann's triple staining; fig. 86 with Bohmer's haema- 

 toxylin. Fig. 84 and 86, Zeiss, homog. imm. 1/12, Oc. 4 ; fig. 86 Zeiss, 

 homog. imm. 1/12, Oc. 5. 



Figs. 87 90. Sperm-mother-cells of Panulirus japonicus, showing resting nucleus 

 with centrosome and archoplasm. Killed with Flemming's stronger solu- 

 tion and stained with anilin-water saffranin. (Zeiss, homog. imm. 1/13 

 Oc. 3). 



