300 PROCEEDINGS OF SOCIETIES. 



PLATE XVII. 



ILLUSTRATIVE OF A PAPER, BY R. Q. COUCH, M.R.C.S. Eng., Etc., ON 

 THE EMBRYO FORM OF PALLNURUS VULGARIS. 



Fig. 



1. Embryo form, just escaped from egg. Front view. 



2. Ditto, ditto. Outline of side view. 



3. Eye of ditto. 



4. Termination of limb of ditto. 



Vide page 228. 



