(C) 



Fig. 8.5. Ocelli and Eyes of Gastropods 

 {a) Patella; (b) Haliotis; (c) Murex. (After Plate (121).) 



m-Mm 



-pp. 



ABC 



Fig. 8.6. Position of Eye-pigments in Ommatidia of 

 Palaemonetes under Various Conditions 



a, from an eye in the light-condition, b, from a dark-adapted eye. c, from an experi- 

 mental animal which, after being adapted to darkness, was injected with eye-stalk 

 extract prepared from light-adapted specimens, bm, basement membrane; c, cornea; 

 dp, distal pigment; pp, proximal pigment; rh, rhabdome; rp, reflecting pigment. (From 

 Kleinholz (83).) 



