EIGENMANN 



PLATE 23 



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B 



Eye of an old Lucifuga, 94 mm. long. 



A. Left eye-socket with contained eye and pigment-mass at its left. X 60. 



B. Part of same section, X 375, showing fibrillar network about eye. Eye a nodule 



of cells in which distinction can only be made between pigment and retina. 

 Part of pigment mass at extreme left. (For right eye see plate 24 D). 



