Plate VIII 



Fig. 41 Hermit crab, thirty-two days. One moult thirty-two days after operation. Dorsal view 

 of normal eye and heteromorphic appendage. Appendage small and sharply curved backward. Shows 

 several segments and a few sensory hairs. X 90. 



Fig. 42 Crangon eye stump, thirty-two days. First moult eight days after operation; second moult 

 twelve days later. Cuticle folded and wrinkled. Short hairs on end of stump. Stump about one-half 

 length of normal eye. No regeneration. X 45. 



Fig. 43 Palsemonetes, thirty-eight days. Two moults. Eye stump and outline of normal eye. 

 Ventral view. Shows abnormal pigment spot. Eye stump one-half length of normal eye. X 45. 



Fig. 44 Palaemonetes, thirty-eight days. First moult sixteen days after operation; second moult 

 eighteen days later. Eye stump showing abnormal pigment which appears as a single solid mass on 

 upper anterior border of eye stump. Stump about two-thirds length of normal eye. X 45. 



Fig. 45 Hermit crab, thirty-nine days. One moult. Heteromorphic appendage. Dorsal view. 

 Nerve trunk distinct in proximal part of appendage, .•\ppendage three-fifths length of normal eye. 

 X 90. 



