ECHINONEUS CYCLOSTOMUS 67 
1847. Agassiz, Ann. Sci. Nat., ser. 3, 7, p. 143. 
1855. Gray, Catal. Rec. Echin. Brit. Mus., p. 32. 
1862. Dujardin et Hupé, Echin., p. 545. 
1866. Martens, Archiv f. Naturg., 32, bd. 1, p. 169. 
E. semilunaris Gmelin. 
1790. Gmelin, Syst. Nat., 1, pt. 6, p. 3184 (Hchinus). 
1816. Lamarck, Anim. sans Vert., 3, p. 19. 
1819. Blainville, Dict. Sci. Nat., 14, p. 196. 
1835. Agassiz, Mém. Soe. Sci. Nat. Neuchatel, 1, p. 187. 
1836. Milne Edwards, Cuvier’s Régne Anim., 10, p. 27, pl. 14, fig. 1 
(Echinus). 
1837. Des Moulins, Etudes, p. 340. 
1864. Lutken, Bidrag Echin., p. 56. 
1869. A. Agassiz, Bull. Mus. Comp. Zodl., 1, p. 267. 
1872. A.-Agassiz, Rev. Echini, p. 118, 333. 
1874. Lovén, K. Svenska Veten. Akad. Handl., 11, no. 7, pl. 9, fig. 83. 
1881. Bell, Ann. Mag. Nat. Hist., ser. 5, 8, p. 437. 
1883. Lovén, K. Svenska Veten. Akad. Handl., 19, no. 7, pl. 11, fig. 116, 
117, pl. 12) fig. 132: 
1893. Field, Univ. Cire. Johns Hopkins Univ., 11, p. 84. 
1895. Sluiter, Konin, Zoél. Genoot. Amsterdam, Bijdr. Dierkunde, aflev. 
17-18, p. 73. 
1898. Clark, Univ. Cire. John Hopkins Univ. 18, p. 5. 
1898. Clark, Ann. N. Y. Acad. Sci., 11, p. 412. 
- 1899. Clark, Ann. N. Y. Acad. Sei., 12, p. 132. 
1900. Lambert, Bull. Soc. Yonne, 53, p. 49. 
1901. Clark, Proc. Bost. Soe. Nat. Hist., 29, p. 344. 
1901. Verrill, Trans. Conn. Acad. Sci., 11, p. 37. 
1907. Mortensen, Danish Ingolf-Exped., 4, pt. 2, p. 185, 186, 193. 
1909. A. Agassiz, Amer. Journ. Sci., ser. 4, 28, p. 490, pl. 2. 
E. gibbosus Lamarck. 
1816. Lamarck, Anim. sans Vert., 3, p. 19. 
1819. Blainville, Dict. Sci. Nat., 14, p. 196. 
1835. Agassiz, Mém. Soe. Sci. Nat. Neuchatel, 1, p. 187. 
1837. Des Moulins, Etude, p. 340. 
1842. Desor, Agassiz’s Monog. Echin. Galérites, p. 46, pl. 6, fig. 4-6. 
1855. Gray, Catal. Rec. Echin. Brit. Mus., p. 32. 
