144 



Bulletin, Vanderbilt Marine Museum, Vol. IV 





kJ 



B 



Text fig. 5. — Clypeaster rosaceus (Linne). A. A large, tridentate pedicellaria, 

 X 50. B. Gemrmform pedicellaria, X 50. 



The gemmiform pedicellariae are much more numerous than the 

 tridentate form but not so large, with the head short, each valve 

 distally has the form of a subcireular spoon with its margin crenulate 

 (figure B). 



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



Clypeaster rosaceus Lamarck, Anim. sans vert., p. 349, 1801 ; ed. II, 

 vol. Ill, p. 289, 1840. — A. Agassjz, Bull. Mus. Comp. Zool., vol. I, 

 p. 264, 1863-67.— H. L. Claek, Univ. Iowa Studies Nat. Hist., 

 vol. 9, p. 101, 1921: Cat. Recent Sea Urchins, Brit. Mus., p. 152, 

 1925. 



Echinanthus rosaceus Gray, Ann. Phil., 1825 (not examined;. — 

 A. Agassi, Mem. Mus. Comp. Zool., vol. Ill, part 1, p. 311, pis. 

 XI c, XI d, figs. 1, 2, pi. XI f, figs. 1-18, pi. XIII, fig. 9, 1872 

 (with synonymy). — H. L. Clark, Rept. U. S. Fish. Comm., vol. 

 XX, part 2, p. 254, 1901. 



