PLATE LXXXIII. 



PAGE 



Aphrocallistes bocagei, Wright, . , .313 



Fig. 1. A specimen, preserved in alcohol ; natural size. 



Fig. 2. Upper view of an internal cliajDhragma fixed to the wall ; natural size. 

 Fig. 3. Inner view of the gastral surface of the wall ; x 60. 

 Fig. 4. Outer view of the dermal surface of the wall ; x 60. 



