PLATE LXIV. 



Sergestes — Development. 



Acanthosoma brevitelsonis (p. 367). 

 Fig. 1. Dorsal view; enlarged thirty -five times. 



Acanthosoma tynitelsonis (p. 369). 

 „ 2. Latero-dorsal view ; enlarged twenty times. 



Acanthosoma longitelsonis (p. 371). 

 „ 3. Latero-dorsal view ; enlarged forty times. 



