PARAPHYSIS AND PINEAL REGION IN REPTILIA 371 



diencephalon is well marked in the early stages. The second 

 paper by Dendy (103) gives a very interesting and thorough 

 description of this region in sphenodon. Especially interesting, 

 is Dendy's statement of the shifting of the opening of the para- 

 physis and the formation of the supra commissural canal, text 

 fig. 3. I was unable to observe this in Lacerta muralis. The 

 circulation and topographical relations of the pineal complex are 

 well shown in text figs. 13-16. The formation and histological 

 structure of the pineal eye has been treated very thoroughly and 

 with great care. 



