158 SVEN LOVEN, ON THE ECHINOIDEA DESCRIBED BV MNN.-EUS. 



11. ECHINUS ATRATUS L. 



EcHiNUS hemispliffirico-ovalis depressiiisculus: spinis 

 trmicatis brevissimis obtiisissiniis: niarg-inalibus cla- 

 vatis (lepressis, 



S. N. ed, 12. 

 Uumph. Mus. t. 13 f. 2. 

 Klein EcMn. t. 23. (ed. gäll.) 



Seha Mus. III, i. 13. f. 4. 



Hahitaf in India; e Musco Tessiniano. 



Spinaä brevissima?, obtusissima^, subcontignae tegunt 

 testarn; sed margiiiales elongatcf, ländes, depressa?. 



This species, of which a denuded specimen was figiired 

 by Klein in 1734, was first known with its spines preserved 

 by the delineation given in 1754 in the appendix to the 

 Frencli translation of his work, representing a specimen from 

 the Mauritius in Réaumur's Cabinet. It is not mentioned in 

 the Museum Tessinianum published in 1753, nor in the ]\I. 

 L. U. of 1764, but among the Echini from Drottninghobn 

 there is a specimen without spines, probably acquired after 

 that time. The specimen described by Linn^us is in Copen- 

 hagen, with other parts of Count Tessin's collections. 



The figures quoted from Rumphius, representing the He- 

 terocentrus mamillatus, and from Seba, H. trigonarius, both 

 probably from recollection only, are to be excluded. 



Coloboceiitrus atratus L. 



Klein, Dispos., p. 18, Cidaris variolata, sp. IV, EUyptica, rr, t. 

 IV, f. .4., />'., orig., 17.34. — Klein, Ordre Naturel, p. 225, t. 23, orig. 

 17.54. — Bränder, Phil. Träns. XLIX, p. 295, t. 8, f. 3, orig., 1755. 



— d'Argenville, Conch., ed. 2, t. 25, f. G, orig., 1757. — Recueil 

 de planelies du Dictionnaire de TEncyclopédie, t. 61, f. 2, orig., 1768. 



— 1)'Ai:(;enville Conch. ed. 3, Favannes, t. 56, f. H. H. orig., 

 1780. — Voyage de la Peyrouse, Atlas, pl. 27, 1, edilio gäll. fig. 

 1 — 10, orig. 



