132 



FREDERICK TILXEY AND LUTHER F. WARREN 



Accessor// />/>/il a/nl /><ir<i/>///il <>r</<inx in Rep tili a. A number 

 of observers have reported the appearance of accessory struc- 

 tures in connection with both the pineal and parapineal organs. 

 Such observations have been made by Spencer ('86) 36fi in Plica 

 nn/lira: by Duval and Kalt ('89) 9 ' J in Anguisfragilis; by Carriere" 

 in 1SJH): by Prenant 3 " in 1893-94-96; by Leydig 237 in 1890-91, 

 and by Francotte 130 in 1896. Accessory organs were also found 



,: 







A U 



. 



ig. OS The corneal scale in Calotcs. arconlin?; to Spencer, l.ssr. 



in L<ic< rid riri/xir<i }yy Burckliardt " ; in 1S94; by Francotte 130 in 

 1896; by Klinckowstroem ('94) 20 ' J in Iguana, and by Studnicka 

 ('93) 3vl in 1'xrnd.n/mx /Killns/. Accessory epiphysoal oi'ga.ns may 

 arix- citlici- IVoin I lie lateral wall of the end-vesicle of the pineal 

 organ or the under wall of the parietal eye. There are two 

 types of accessory organs: 1 ) accessory pineal organs, and 2) 

 accessory parietal eye organs. The following are the possibili- 

 tie> t'oi- accessory pineal organs: 



