SERTULARIAD.E : THUIARIA. 83 



7. THUIARIA,* Fleming. 



CHARACTER. Polypidom plant-like, rooted by a tubular fibre, 

 erect, dichotomously branched or pinnated ; the cells sessile, 

 biserial, adnate to the rachis or " imbedded in the substance of 

 the stem and brandies ," vesicles scattered. Polypes hydraform. 



1. TH. THUIA, cells ovato-elliptical, rather acute ; vesicles 

 pear-shaped. Sir Robert Sibbald.f 



PLATES XVII. and XVIIL, Fig. 1, 2. 



Planta marina equiseti facie, Sib. Scot. Ill ii. lib. iv. 55, tab. 12, fig. 1. Fucus 

 equiseti facie, Ibid. lib. i. 56. Raii Syn. 50, no. 47. Bottle-brush Coralline, 

 Ellis Corall. 10, no. 9, pi. 5, fig. b, B. Sertularia thuja, Lin. Syst. 1308. Pall. 

 Blench. 140. Ellis and Soland. Zooph. 41. Berk. Syn. i. 217. Esper Pflanz. 

 Sert. tab. 22, fig. 1-3. Turt. Gmel. iv. 678. Wern. Mem. i. 564. Turt. Brit. 

 Faun. 213. Stew. Elem. ii. 442. Lamour. Cor. Flex. 193. Hogg^s Stock. 32. 

 Cellaria thuia, Lam. Anim. s. Vert. ii. 339. Stark Elem. ii. 439. Thuiaria 

 thuia, Flem. Brit. Anim. 545. Johnston in Trans. Newc. Soc. ii. 261. Couch 

 Zooph. Corn. 1 1 : Corn. Faun. iii. 27, pL 5. Macgillivray in Ann. and Mag. 

 Nat. Hist. ix. 464. W. Thompson in Ibid. xiii. 440. Biseriaria thuia, Blainv. 

 Actinol. 482, pi. 81, fig. 3. 



Hob. On shells from deep water. "They are found on the coast 

 of Scotland, and in the north of England, particularly about Scar- 

 borough, where the fishermen have given them the name of Bottle- 

 brushes," Ellis. " Very frequently found on the coast of Durham," 

 J. Hogg. Common on N. Durham and Berwickshire, G. J. Leith 

 shore, Jameson. Near Dundee, W. Joel-son, jun. Coast of Corn- 

 wall, very rare, R. Q. Couch. Northern coast of Ireland, W. Thompson. 



* Formed from 6uia., a cedar. There is a Thuarea in Botany, so near to the 

 zoophytical genus in sound as to render this name objectionable. The Thuarea is 

 formed from the name of the botanist A. du PetitrThouars. 



t There is a very interesting life of Sir Robert, written by himself, in the Ana- 

 lecta Scotica, v. i. p. 1 26 et seq. It is printed in a separate form, with the title 

 "The Autobiography of Sir Robert Sibbald, Knt, M.D. ; to which is prefixed 

 a short account of his MSS.," 8vo. ; published by Thomas Stevenson, Edin 1833. 

 The pamphlet forms the basis of his Life prefixed to the 20th vol. of the "Naturalist's 

 Library," with which a portrait is also given. Sir Robert was born 15th April 

 1641 ; graduated in 1662 ; was knighted in 1682 ; and died, probably, in 1722, for 

 the precise date has not been ascertained. See Pulteney's Sketches of the Progress 

 of Botany, v. ii. p. 4-8. The following Elogium is from the Second Series of the 

 Analecta Scotica, p. 153, Edin. 1837 : 



" Illustrata simul decorat, pariterque Sibaldum 

 Scotia, scriptori lumine grata suo." 



G 2 



