VISION IN INSECTS. 



125 





a, Eyes of Mygah avicularia. 





b, Eyes of Myguh ccementaria — and c, Lycosavoracc. 



d, Eyes of Dolomedes marginatvs — and e, Cteims duhius. 

 O O 



o o ^' 



f o o 



y, Eyes of Sphasus indianus — and g, Attus parus. 

 O C, 



h, Eyes of Eresu^ cinnuberinus — and i, Thomisus citreus. 



O O i 



* oooo 



k, Eyea of Clubiona accentuata— and /, Dysdera erythrina, 

 VOL. XII. 11* 



