PLATE VIII. 



C. signatus, corona/us. 



Leitz camera drawings. Reduced one half. 



FIG. i. An outline showing the proportions of the thorax, abdomen and antenna; 

 when the antenna contain eleven segments. 3X3- 



The abdomen has acquired four segments in which there is still little differentia- 

 tion. The caudal stylets remain unchanged. 



The antennae have acquired a new segment, the small second segment from the 

 base of the antenna, making eleven in all. Only the right antenna is represented. 



FIG. 2. The external ramus of the fourth swimming feet. All the rami of the 

 swimming feet are three-jointed, and in their armature, have reached the condition 

 of the adult. 3 X 7- 



FIG. 3. The rudimentary fifth foot remains practically unchanged. 3X7- 



200 



