84 



DISTRIBUTION IN NATURE 



IX 



Idya furcata^^°. 



Leander serratus^^^: Astacene. 



Maja squinado^^^' ^^^: Astacene. 



Munida banffia^^^: Astacene, carotene, 

 xanthophyll. 



Mysis flexuosa^^^: Carotene. 



Neohela monstrosa'^^^ . 



Nephrops norvegicus'^^^' ^^^i Astacene, 

 carotene, xanthophyll. 



Pagurus hernhaydus^^'^: Carotene, 

 xanthophyll. 



Pagurus riibescens'^^: Carotene. 



Palaemon fabricii-^^' -^^i Astacene, ca- 

 rotene, xanthophyll. 



Palaemon serratus^^^: Astacene. 



Palinurus vulgaris^^^: Astacene. 



Pandalus brevirostris^^^: Astacene. 

 carotene, xanthophyll. 



Pandalus borealis^^^: Astacene(?). 



Pandalus montagui^^'^: Astacene, caro- 

 tene. 



Pontophilus spinosus^^'^. 



Porcellana longicornis^^^: Carotene. 



Portunus depuvator^^^: Carotene. 



Portunus longicornis^^^: Carotene, 

 xanthophyll( ?). 



Portunus pusillus^^'^: Carotene, xan- 

 thophyll(?). 



Portunus puber^^^: Astacene. 



Potamobius astacus = Astacus fluvia- 

 tilis^^^: Astacene. 



Scalpelluni scalpellum^^'^. 



Spirontocaris lilljeborgii^^^. 



Stenorhynchus species^^"-. 



For lurther information regarding carotenoids in Crustacea refererice should 

 be made to the investigations of Lonnberg (Ref. 17, p. 108). 



b) Molluscs* 



The carotenoids of molluscs have been repeatedly studied. Recent investig- 

 ations in this field are mainly due to Lonnberg and Lederer. 



TABLE 21 (References see p. 99-107) 

 carotenoids in molluscs 



(i) Amphineures 



Lepidopleurus cancellatus"^^^: Carotene, 



xanthophyll. 

 Tonicella marmorea^^^: Carotene(?), 



xanthophyll. 



Chaetoderma nitidulum'^^^: Carotene. 



(ii) Lamellibranchia 



Anomia ephippium-^^: Carotene. 



A starts banksi^^^. 



Astarte sulcata^^^: Carotene. 



Axinus flexuosiis^^^. 



Cardiuni echinatum^^^: Carotene. 



xanthophyll( ?). 

 Cardiuni norvegicutn^^^. 



Cardiuni tuberculatuni^^^: Xantho- 



phyll(?). 

 Cochleodesnia praetenue^^^: Carotene. 

 Corbula gibba^^^. 

 Cultellus pelbicidus"^^: Carotene, 



xanthophyll. 

 Cyprina islandica-^^' ^"' ^°^: Carotene. 



* Crystalline pigments were obtained only in very few cases and most of the data are 

 therefore not conclusive. 



