DISTRIBUTION IN NATURE 



IX 



d) Amphibia 

 TABLE 27 (References see p. 99-107) 



CAROTENOIDS IN AMPHIBIA 



Batrachier species*"^. 



Bombinator igneus*'^*: Lacertofulvin 



(xanthophyll?). 

 Bufo calamita'^^^' *": Xanthophyll. 

 Bufo calamita (ovaries) ; Xantho- 



phyll(?)*03. 



Bufo viridis*°^. 



Bufo vulgaris'^^^ . 



Frogs (retina)**"*; Carotenoids of un- 

 known constitution. 



Frogs (retina, fat tissues, skin)*"i.- xan- 

 thophyll(?). 



Hyla arborea and Rana esculenta'^^^. 



Rana esculenta (skin, ovaries, fat tis- 



sues)*"® .• Carotene, xanthophyll, zea- 

 xanthin. 



Rana esculenta (liver) .• a-Carotene, )3-ca- 

 rotene, xanthophyll, zeaxanthin*"®. 



Rana temporaria, rana esculenta, rana 

 bufo (skin, liver, ovaries, ovarian 

 ducts, eggs, fat tissues, kidneys, tes- 

 tes) '*°''' *"8: Carotene, xanthophyll. 



Salamandra maculosa^'^: Xantho- 

 phyll(?). 



Triton cristatus*°^. 



Triton cristatus (fat tissues)*"^.' Xantho- 

 phylK?). 



e) Reptiles 



Our knowledge of reptile pigments is even more deficient than that of 

 amphibia pigments. The investigations of Kuhne and Krukenberg show 

 that the pigments of snakes are not carotenoids. Salamanders and tortoises, 

 on the other hand, appear to contain carotenoids (Ref. 38 and 39, p. log). 



TABLE 28 (References see p. 99-107) 



CAROTENOIDS IN REPTILES 



Chamaeleon vulgaris^^'^: Lacertofulvin 

 (xanthophyll?). 



Chry semis scripta elegans [eye)^^^ : y-Ca- 

 rotene; (back).- a-carotene( ?) ; (in- 

 testine) .■ /5-carotene and a phyto- 

 xanthin. 



Clemmys insculpata (retina)*^" .' Astacene. 

 Lacerta agilis^^^. 

 Lacerta muralis'^^*. 



Tortoise (blood serum, fat tissues)*"® .• 

 Carotenoids. 



f) Miscellaneous 



Alfalfa (after acid treatment )*24; five 



new carotenoids. 

 Bees wax*^''' *2*: Xanthophyll derivative, 



xanthophyll, carotene. 

 Carrot leaves^^'^: a-Carotene, ^-carotene, 



y-carotene. 

 Egg yolk*^^: /S-Carotene, cryptoxanthin, 



xanthophyll. 



Elodea canadensis'^'^^' *^^: Carotene, elo- 

 xanthin = xanthophyll epoxide, 

 xanthophyll. 



Marine so;7*^*: a-Carotene, ^-carotene, 

 xanthophyll. 



Oil from acacia acimiinata^^": ^-Caro- 

 tene and pigments of unknown con- 

 stitution. 



