122 Proceedings of the Royal Society of Victoria. 



Fig. 24. — Portion of a transverse section of a female 

 specimen, stained with borax carmine, to sliew 

 the reproductive organs. Zeiss D, oc. 2, camera 

 outline. 



Capsule of ovum. 



Female genital opening. 



Granular nucleated cells lyiug in the gelatinous 



ground substance. 

 Nucleus of ovum. 

 Sub-epidermic glandular layer. 

 Duct through which the spermatozoa i-each the 

 ovum. 



(0th ei" lettering as before). 



Fig. 'Io — Portion of a transverse section of a male specimen, 

 stained with borax carmine, to show the repro- 

 ductive organs. Zeiss D, oc. 2, camera, 

 m. g. 0. Male genital opening, 

 sp.m.c. Mass of developing sperm-mother-cells. 

 te. Testis full of spermatozoa. 



te. ca. Shrunken caj)sule of a testis from which the 



spermatozoa have apparently escaped. 

 V. d. Vas deferens. 



(Other lettering as before). 



Fig. 26. — Flame cell. Drawn from crushed preparation of 

 living specimen under Zeiss F, oc. 2. 

 fi. The Hame-like, vibratile buncli of cilia, with 



alternate light and dark bands caused by its 

 undulatory movement. 



