BIHANG TILL K. SV. VET.-AKAD. HANDL. BAXU 13. AFD. IV. N:0 O. 151 



known under that name. The collection contains no speci- 

 men refeiable to it, and its printed label of 1790 lias been 

 given to the E. diadema, sliowing that the typical specimen 

 had thcn already disappeared. 



The fig\u-e in Rumphius, t. 13, f. 1 doubtless represents 

 the E. mamilhitus, but Avas not referred to in the Lecture of 

 1752 because not at hand, while the two followino- were 

 quoted. Gualtieki f. 6" is a mistake for f. B, for that time a 

 good representation. d'Argenville, t. 28, f. E, is the Dia- 

 dema saxatile 1^. In the S. N. ed. 10. 1758, is added, rightly, 

 Klein (German ed.), p. 19, t. 6, for which in the ed. 12 has 

 been substitiitod, from the French edition, t. o f. A. 



Out of this species and two more Brandt^) made a »siib- 

 genus» called Heterocentrotus, a name that Gray-) and Jo- 

 hannes Muller^) many years ago proposed to shorten to 

 Heterocentrus. The ninth Linnean species then becomes : 



Heterocentrus maniillatus L. 



RuMPH. Ainb., p. 32, t. 13, f. 1. 2, orig., 1705. — Klein, 

 Dispos., p. 19, Cidaris mamillata, species 1, Mainillfe Sancti Pauli 

 Melitensiuin, t. VI, orig., 1734. — Id. ed. gäll. t. 3, fig. .4, B, 1754. 

 — ScHYNVOET, Tlies. iniag., t. 13. f. 1, 2, repet. Ruinpb., 1739. — 

 GuALTiEPa, Test. t. 108, f. B, orig., 1742. — Scilla, de corporibus 

 marinis, ed. 2, 1752, t. XI, No 1, fig. 2, orig., 1752. — Seba, 

 Thes., III. p. 27, t. 13, f. 1, 2, orig., 1758. — Recueil de plan- 

 ches sur les sciences, du Dictionnaii-e de rEncyclopédie, fol., t. 60, 

 f. 2, orig., 1768. - — d'Argenv]LLE, Conchil., éd. 3, Favannes, III, 

 1. 56, £. )>, 1, orig., 1780. 



1758. Echiniis mamillatus L. S. N. ed. 10, p. 664. 



M. L. U. p. 711. 



S. N. ed. 12, p. 1103. 

 HouTTUYN, Xatuurlyke 

 Hist., XIV, p. 513, t. 

 114, f. 3, 4 orig. 

 1775. Stat. Muller, Xatur- 

 Syst., VI, I, p. 151, t. 

 8, f. 3, 4, imit. Hoiit- 

 tnvn. 



') Prodr. Descr. Anim., p. 63. 



*) Synopsis Brit. Mus., ed. 43. 1841, p. 137. 



') Ueb. d. Bau d. EoMiiodermen, Berl. Abh., 1853, sep. p. 8. 



