BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 13. AFD. IV. N:0 5. 77 



Tripneustes Gratilla L. 



Cidaris miliaris species III, Angulosa, Klein, Disp. p. 18, t. II, 

 fig. F, orig., 1734. — Cidaris assiilata, species IV, variegata, Id., ib., 

 p. 21. t. X, fig. 5, C, orig., 1734. 



1758. Echinus Gratilla L. S. X. ed. 10, p. 664. 



» » >. 1764. M. L. U. p. 707. 



1767. S. N. ed. 12, p. 1102. 

 1778. Cidaris angulosa Leske, Addit. p. 92, t. II, fig. F. 



Tripneustes » » 1879. Jeffbey Bell, Proc. Zool. Soc., 



p. 655. 

 1816. Echinus virgatus Lamck, An. s. Vert. III, p. 44. 

 1816. » pentagonus Lamck, ib. III, p. 46. 

 1816. » subcaeruleus Lamck, ib. III, p. 49. 

 1825. » inflatns Blainv. Diet. Se. nat. XXXVII, p. 91. 

 » » » 1834. Man. d^^ctinol. »Oursin enflé», 



Atlas, pl. XX, fig. 4. 



The »Cidaris assulata variegatav of Klein is to all appea- 

 rance the Tripneustes subcceruleus Lamck. Leske') makes its 

 pre-Linnean appellation binarv: Cidaris variegata, but, unac- 

 quainted as he was with its type specimens, describes under 

 that name and as a smaller specimen of the species, an Echi- 

 nus from the collection of the Prince of Schwarzburg-Rudol- 

 STADT, evidentlv of another genus. Its phrase: »tria pororum 

 paria, obliquis adscendentibus transversis ordinibus posita. . . . 

 os levissime sinuosum» has been assumed as being meant for 

 the Lytechinus variegatus Lamck, and consequently the name : 

 variegata Leske must be withdrawn from the species figured 

 by Klein. 



The name of Ecliinus sardicus Lamck has verv »enerallv 

 been used to designate a form of Tripneustes. Already, how- 

 ever, in his monograph of 1825 Blainville-), who had before 

 him specimens of the Paris Museum »with the name given 

 bv Lamarck», altered it to »inflatus», and riirhtlv, because 

 Leske had used »sardicixs> for a widely different species. 



Three forms were placed by Lamarck in close connexion: 

 8. Echinus melo, 9. E. sardicus, both inhabitants of the Medi- 



') Addit. p. 149. 



'^) Diet. So. Nat. XXXVII, p. 91. 



