NOTES ON THE CHEOMATOLOGY OF ANTHEA CEREUS. 573 



Notes on the Chromatology of Anthea cereus. 



By 



C. A. niac munn, 9I.A*, M.D. 



With Plates XXXIX and XL. 



The colouring matters of Anthea cereus were first 

 examined by Sorby/ who found several present in this 

 Actinia. Among others he found chlorofucin, the bands 

 of which had been observed by Mr. Charles Horner^ and the 

 position of which led Mr. Horner to think that the supposed 

 chlorophyll was different to that of land plants. Sorby had 

 previously found chlorofucin in fresh-water algse and sub- 

 sequently in Fucus and other olive marine algse; and in 

 his paper on " Comparative Vegetable Chromatology " he 

 gave directions for its separation from other pigments. Prof. 

 Lankester, in the list of chlorophyll-containing animals in 

 the English edition of Sachs's 'Botany/ includes Anthea 

 cereus and puts "chlorofucin^' after it, thus accepting 

 Sorby's statements. 



Among those animals which have been proved to contain 

 symbiotic unicellular algse Anthea is now, I believe, included;- 

 and it becomes of interest to find out whether chlorofucin is 

 due to the presence of these symbiotic algse or whether it is a 

 pigment belonging intrinsically to the animal ; whether, also, 

 the other colouring matters associated with the chlorofucin 



1 ' Proc. Roy. Soc.,' No. 146, vol. xxi, 1873, p. 454. 



- Hertwig, 0. and 11., " Die Actinien," ' Jena'ische Zeitschrift. f. Naturwis.,' 

 Ed. xiii, 1879, S. 495—500; and Geddes, ' Proc. Roy. Soc. Edin.,' vol. xi, 

 1881—1882. 



