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XIV. On the Nature of the Marine Traduction commonly called 

 Flustra arenosa. By John Hogg, Esq. B.A. F.L.S. 



Read March 18, 1823. 



The singular form and appearance of the marine substance 

 commonly called Flustra arenosa, induced me lately to make the 

 following observations, which 1 beg leave to lay before the So- 

 ciety, with its synonyma. 



Flustra arenosa, Crustacea arenosa lutosa, poris simplicibus sub- 

 quincuncialibus. Solander and Ellis Zooph. p. 17. n. 10. 

 Gmelin Linn. Syst. Nat. vol. i. p. 3829. n. 13. Boys in 

 Trans. Linn. Soc. vol. v. p. 230. tab. 10. 



Flustre areneuse, crustacee, friable, jaunMre ; cellules simples 

 presque en 6chiquier. Lamouroux Polyp. Corall, Flexibles, 

 p. 111. n. 220. Bosc Hist. Nat. de Vers, iii. p. 118. 



Flustre arenac6e. Blainville in Diction, des Scien. Natur. 



Eschara (lutosa) Crustacea arenaceo-lutosa, poris simplicissimis 

 subquincuncialibus. Pallas El. Zooph. p. 37 . n. 5. 



Eschara Millepora arenosa Anglica. Raii Syn. p. 31. Petiveri 

 Mus. n. 271. 



English Sandy Millepora. Ellis Coral, p. 74. pi. 25. fg. e. 



Alcyonium arenosum, flat, semicircular, consisting of agglu- 

 tinated sand, pale yellowish-brown. Turton Gmel. Syst. Nat. 

 vol. iv. p. 654. Shaw Nat. Miscell. tab. 272. 



An Discopora cribrum, Discopore cribre ? Lamarck Anim. sans 



Vertebres, vol. ii. p. 167- 



This 



