PLATE XL 



Trochus Imperialis: testa conica olivacea, squamis vioJaceis 

 , seriatis fornicatis tecta : anlractibus inflatls mar- 



gine spinoso radiatis, umbilico infundibuliformi 

 albo. GmeL Linii. Syst. Nat. 3576. 63. — Var 



OLIVACEUS. 



Trochus Imperator Chemn. T, 5. 173. 174. — Var olivaceus 

 cc Pink Sun Trochus Lev. Mus. 



We cannot for a moment hesitate to believe that in announcing 

 to our readers the introduction of the Pink, or Roseate Imperial Sun 

 Trochus : the significant appellation under which the present rarity 

 has been for many years distinguished, we shall awaken the attention 

 of every Conchologist and amateur of the science. The shell so 

 named, formerly constituted an object, no less conspicuous than 

 beautiful, among the Conchological productions treasured together 

 in the once celebrated Leverian Museum. And, as we possessed, 

 through the immediate favour of the proprietor of that Museum, 

 John Parkinson, Esq. an unreserved access to every article in the 

 Museum, for the purpose of delineating the figures, or taking the 

 descriptions of whatever we conceived worthy of such observation, it 

 will be naturally imagined the Pink, or Roseate Imperial Sun Tro- 

 chus, would be esteemed of too much importance to escape our very 

 particular attention. The dispersion of that once celebrated Reposi- 

 tory of Natural History has long since removed, and probably for 

 ever, this exquisite rarity from the eye of public curiosity ; nor 

 indeed is its present destination correctly known ; a circumstance, it 

 is presumed, that cannot fail to enhance the value of a drawing, 



