IIS FREDERICK TILXKV AM) LUTHER F. WARREN 



10. 1'rolcnx anyiiinnx. (laleotti ( ' ( .H'). I4 The pineal organ 

 in tliis form is small and pyrifonn and has no evidence of 

 srrivtory function. 



11. Salattia/nlrina perspicillata. Galeotti ('1)6. 14 In this 

 species the pineal organ is a small, flattened structure. 



. \roi)A. 



1. Ichllii/(>i>hix (jlni'masa. Burckhardt('90). 42 The pineal organ 

 in this form is small and pyrifonn and has a short stalk, but 

 does not reach the skull roof. A well-developed paraphysis is 

 present. Fibers from the end- vesicle seem to make their way to 

 the commissura habenularis. 



AXURA 



1. liana rxculrnld. Leydig ('68) , 233 In this species the end- 

 vesicle has a figure-of-eight shape and is solid. Leydig 238 later in 

 1891, could find no evidence of a parietal spot in liana ./'//.sea. 

 de(lraaf ir>: ' in 1886 found a well marked end-vesicle which was 

 solid and round and a well-developed parietal spot. 



2. Cei'<ita/>liri/x. Lessona ('80). - 11 There is a fairly well- 

 marked end-vesicle in this species. 



3. Bufo cineretix. Lessona ('SO) 241 did not observe a pineal 

 organ in this form, but it was found subsequently by de( Iraaf 1 ''' 

 in issii. Sludnicka 386 also found it in young larva-. 



4. J'dolxilrx ///.ST//.S. Lessona ('SO)'-' 41 found the end-vesicle 

 in this species. 



f). />/.sn;///n.s-.s//.s. Lessona ('80). 2 " A fairly well-marked end- 

 vesicle exists in this species. 



6. .l////rx nfixlrlriranx. Lessona ('SO).'-'" In this form there 

 is a well-marked end- vesicle which was first accurately described 

 by de( iraaf.'"' 1 



7. liana <><</ />/i<tl /* and fiyrina. Lessona ('SO).'" In these 

 forms the pineal organ presents a well-marked end-vesicle. 



8. rina antcrii-ana. f.essona ('SO).-'" In this species thei'e 

 is no end-vesicle. 



'.). ll,,la arborea. dcdraaf ( J 86), 1M and Leydig ('91) Ma both 

 found thai llx- end-\'esicle was absent and that the skin in the 

 usual position of the parietal spot showed nothing of the existence 

 of such ;i -t met lire. 



