INSECTS, ARACHNIDS AND REPTILES 



of astaxanthin comes from the observation, already quoted on p. 219, 

 that astaxanthin occurs in the integument, but never in the haemolymph, 

 where only ^-carotene is found. 



In the animals so far considered the production of new carotenoids 

 has always been an oxidative process, and locusts are no exception to 



Table 40. — Qualitative Carotenoid Distribution in Insects 



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223 



