BARBADOS-ANTIGUA REPORTS 119 



and Antigua are well outside its known range, I think dark 

 greenish specimens of lucunter have been mistaken for viridis. 



CLYPEASTER ROSACEUS 



Echinus rosaceus Linne, 1758. Syst. Nat. ed. 10, p. 665. 



Clypeaster rosaceus Lamarck, 1801. Syst. Anim. s. Vert., p. 349. 



EchiiKinthus rosaceus A. Agassiz, 1872. Rev. Ech., p. 311 ; pi. 

 Xld, figs. 1, 2. 



The only evidence of the occurrence of this well known species 

 in the region visited by the Iowa party, is a group of fragments 

 of a bare test about 80 mm. long, taken at English Harbour, 

 Antigua. 



MELLITA SEXIESPERFORATA 



Echinodiscus sexiesperforata Leske, 1778. Add. ad Klein, p. 

 135. 



Mellita sexiesperforata Meissner, 1904. Bronn's Thierreichs, 2, 

 abb. 3, buch 4, p. 1384. 



There are three fine specimens of this well-known "key-hole 

 urchin" from Barbados. Their color in alcohol is bright yellow- 

 brown. While one specimen is longer than wide, 78X76 mm., 

 the other two are distinctly wider than long, 80X82 mm. and 

 66X69 mm. The labels do not indicate just where or under 

 what conditions these urchins were taken, and there is no men- 

 tion of them in the "Narrative". 



ECHINOEUS CYCLOSTOMUS 



Leske, 1778. Add. ad Klein, p. 109. 



This well-known cosmopolitan echinoid has taken on new in- 

 terest recently from the fact that it is now fairly well demon- 

 strated that it is a Holectj^poid, the genus Echinoneus and its 

 near relative Micropetalon being the only living representatives 

 of that order (See Hawkins, 1920, Phil. Trans. Roy. Soc. (B), 

 209, p. 442). Both at Barbados and Antigua, Echinoneus was 

 found in its customary habitat, in the sand beneath rock frag- 

 ments. There are 3 specimens in the collection from Barbados 



