EIGENMANN 



PLATE 20 





B 



1 i- 



crn 



Eyes of Lucifuga. 



A and B. Eyes of opposite sides of young, 28 mm. long, showing great differences in 

 size of eyes and also of general structure. In A lens capsule shows well. 



C. Eye of individual 53 mm. long. X 200. Eye of opposite side very large 

 and vesicular (represented in plate 2 4 A.) 



