28 THE VOYAGE OF H.M.S. CHALLENGER. 



HELM I NTHOCL ADE^E. 



Galaxaura cylindrica, Lamour. 



Galaxaura cylindrica, Lamour., Exp. M6th., p. 22, ex Kiitz., Sp. Alg., p. 530 ; Dickie in Journ. Linn. 

 Soc. Lond., xiv. p. 364. 



Fernando-Noronha. Moseley. 

 Barbadoes ; Red Sea ; Cape Verde Islands. 



Galaxaura oblongata, Lamour. 



Galaxaura oblongata, Lamour., Polyp. Flex., p. 262, ex Kiitz., Sp. Alg., p. 529 ; Dickie in Journ. 

 Linn. Soc. Lond., xiv. p. 364. 



Fernando-Noronha. Moseley. 



West Indies ; Ceylon ; Cape of Good Hope. 



Galaxaura marginata, Lamour. 



Galaxaura marginata, Lamour. ; Kiitz., Sp. Alg., p. 530 ; Dickie in Journ. Linn. Soc. Lond., xiv. p. 364. 



Fernando-Noronha. Moseley. 

 West Indies ; Madagascar ; Mauritius. 



Galaxaura rugosa, Lamour. 



Galaxaura rugosa, Lamour. ; Kiitz., Sp. Alg., p. 530; Dickie in Journ. Linn. Soc. Lond., xiv. p. 364. 



Fernando-Noronha. Moseley. 



West Indies ; Mauritius ; Gambier Islands ; Cape Verde Islands ; Fiji Islands. 



Cryptonemiace^e. 



Chrysymenia enteromorpha, liar v. ? 



Chrysymenia enteromorpha, Harv., Nereis Bor.-Am., ii. p. 187 ? ex Dickie in Journ. Linn. Soc. Lond., 

 xiv. p. 364. 



Fernando-Noronha. Moseley. 



Florida. 



The single very fragmentary specimen has the structure of the genus, but the species 

 is doubtful. 



CHLOROSPERME^E. 



Siphon ace.e. 



Caulerpa clavifera, K. A. Agardh. 



Caulerpa clavifera, K. A. Agardh, Sp. Alg., i. p. 437; Harv., Nereis Bor.-Am., iii. p. 19; Dickie in 

 Journ. Linn. Soc. Lond., xiv. p. 364. 



Fernando-Noronha. Moseley. 



Canaries ; Red Sea ; Indian Ocean ; Florida Keys. 



