)S FREDERICK TILXEY AXD LUTHER F. WARRKX 



ment, there has been assembled a formidable array of evidence. 

 Hoffmann, lv; from his observations on Lacertd ay Hi*. Strahl and 

 Martin. ;v; in Ati<inix and Ldccrta riripara, Francotte, 1 - 7 on 

 I.di-trid riiifxird, Klinckowstroem.-" 7 in lyinunt. McKay,'--' 5 in 

 Grammatophora mnric<tl>i. and Schauinsland, 848 in *S 

 all advocate this view (fig. '24 . 





Fig. 2:i Anlage of the epiphyseal complex in a 12 nun. larva of Bufo vulgaris 

 according to BcTancck, Is'.C!. 



/'"., pineal organ; E/>.. proximal portion. 



Beraneck, 23 on the other hand, in his well-known work upon 

 the parietal eye and the morphology of the third eye of verte- 

 brates, concludes that the parietal eye should not be considered 

 as a simple diverticulum of the pineal gland. In Luccrld and 

 Anguis it constitutes an independent organ which develops from 

 the thalainencephalon as the epiphysis, but develops parallel to 

 the latter not dependent upon it. The parietal eye is attached 

 by a neural fasciculus which is transitory and not in any sense 

 derived from the epiphysis (fig. 2">). 



