l!inAN(i Tll.L K. SV. \ 1:T.-AKAI). 11 ANDI,. liAM) lo. \FI» IV. N:<> 5. IM 



Among tlic rcfercnces subjoincd in thc S. X. cd. 10. the 

 onc under y. pETiVEi!, Mns. 19, f. 125», is nowlicrc to be 

 foTind. It probubly meaus: Pet. JNIus. t. 126, f. 10, a wretclicd 

 imitiition of 1;>()ccone's ') »Ecliinus dentatus, compressiis, Spiitago 

 uHiiiit^s, wliicli gives the Kotiilti dentata Lamck., and ought to 

 stånd under «, the ;/ of the M. \i. V. Of the relerences to 

 Seka, t, 15, added in the S. X. ed 12, the f. 1, 2 belong to 

 the Eehinodiscus auritus, and f. 7, 8, to Mellita scxforis. which 

 is also the species figured in Hughes' Barbadoes, p. 280, t. 26, 

 f. 3, 4. 



All that LiNN.EUS cver wrote on Echinoids is contaiued 

 within the spaee of a few pages and was a fcAv days' work at 

 Drottningholm, in 1752 and 1754, the only time of his life he 

 coidd allot to this part of the Animal Kingdom. He never 

 reverted to it in after years. ^Yhat he had written down, in 

 the Queen's Cabinet, on the schedules from which in the cnsuing 

 autumn he dictated to his pnpils, reniained, save for a few addi- 

 tions, nnaltered all through his subsequent zoological works. 



The seventeen species here commcnted upon were all 

 known to LinnvEUS from actual observation, and hc never ad- 

 mitted any on thc aiithority of others. Wheu he was called away, 

 from studies to which he had dcvotcd himsclf for many years, 

 to far distant regions of thc biological firmamcnt, they were 

 all that he sighted, ont of the whole constellation of the Echi- 

 noids all but unkuown to him beforc. It may easilv be be- 

 lieved that to him they were »a thesa\irus;>, but thc collection 

 they formed was in reality, even for that time, of but modest 

 pretensions; the Dutch had not permitted their choiccr raritics 

 to get abroad and adorn foreign Museums. Had the splcndid 

 Astropyga radiata and Plagionotus pectoralis from the cabinet 

 of Jonas Witsen at Amsterdam, the Echinolampas oviformis, 

 the Brissus carinatus, and the Metalia sternalis, all iigured in 

 thc work of Seba, and the Lobophora bifissa in that of RuM- 

 PHius, been represented in the Queen^s Cabinet, and along with 

 them such other forms more or less recognisable in preceding 

 authors, as the Temnopleurus toreumaticus in Klein's book, 

 or the Microcyphus foliatus in Gualtieri, and had Linn.eus 



') Recherche8, t. ad p. 273. 



