Foot & Strobell. 



JouRN. Linn. Soc. Zool. Vol. XXXII. PI. 45. 



42 



47 



48 



50 



K.F. & E.C.S., photo. 



Andre. Sleigh & Anglo. Ltd. 



INTROMITTENT ORGANS from F2 HYBRIDS from 

 E. VARIOLARIUS & E. SERVUS. 



