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a 
| ES On the Natusges the Marine Production commonly called 
à — Flustra arenosa. By John Hogg, Esq. B.A. F.L.S. 
Read March 18, 1823. 
= HE ; singular. WE and appearance of the marine substance 
commonly called Flustra arenosa, induced me lately to make the 
= following observations, which I beg leave to lay before the So- 
iety with its synonyma. 
a arenosa, crustacea arenosa lutosa, poris simplicibus sub- 
-3 ~ quincuncialibus. Solander and Ellis Zooph. p. YT. n. 10. 
; Linn. jst. . Vat. vol. i. p. 3829. n. 13. Boys in 
Linn. Soc. vol. v. p. 230. tab. 10. 
Flustre aréneuse, crustacée, friable, jaunâtre ; cellules simples 
presque en échiquier. Lamouroux Polyp. Corall. Flexibles, 
p. 111. n. 220. Bosc Hist. Nat. de Vers, iii. p. 118. 
Flustre arenacée. Blainville in Diction. des Scien. Natur. 
Eschara (lutosa) crustacea arenaceo-lutosa, poris simplicissimis 
subquincuncialibus. Pallas El. Zooph. p. 37. n. 5. 
Eschara mise == Anglica. Raii Syn. p.31. Petiveri 
Mus. n. 271.3 
English Sandy Millea Ellis Coral. p.74. pl. 25. fig. 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 
Vertébres, vol. à. p. 167. 
This 
