Thuiaria. 
Z. HYDROXDA. 
137 
of corallines, a sessile vesicular body filled with milk-white granules, 
resembling- very exactly the oviferous vesicle of a Sert.ularia, but of 
what species I am unable to say, if indeed it belongs to any. It is 
rooted, subsessile, roundish, slightly flattened on the sides, smooth, 
with a short tubulous even aperture. Fig. 10, page 92. It has no at- 
tachment to any organized, body. Can it be the nidus of some mi- 
nute Fusus or Purpura ? 
7. Thuiaria, * Fleming. 
Character. Polypidom plant-like, rooted by a tubular fibre, 
erect , dichotomously branched or pinnated ; the cells sessile , bise- 
rial , adnate to the rachis or 66 imbedded in the substance of the 
stem and branches vesicles scattered. — Polypes hydraform . 
1. Th. Thuia, cells ovato-elliptical , rather acute ; vesicles 
pear-shaped. Sir Robert Sibbald.f 
Plate XIV. and XV. 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, Corail. 10, no. 9, pi. 5, fig. b. B.~ Sertularia 
thuja, Lin. Syst. 1308. Pall. Elench. 140. Ellis and Soland. Zooph. 
41. Berk. Syn. i. 217- Turt. Gmel. iv. 678. Wern. Mem. i. 564. 
Turt. Brit. Faun. 213. Bose, Vers, iii. 109. Stew. Etem. ii. 442. La- 
mour. Cor. Flex. 193. Corail. 84. Hogg's Stock. 32. Risso L’Europ. 
Merid. v, 311 — 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 — La Biseriare thuia, Blainv. Actinol. 482, pi. 
81, fig- 3. 
Hob. On shells from deep water. “ They are found on the coast 
* Formed from Qv'iet — a cedar. There is a Thuarea in Botany, so near to 
the zoophytical genus in sound as to render this name objectionable. The Thu- 
area is formed from the name of the botanist A. du Petit-Thouars. 
■f There is a very interesting life of Sir Robert, written by himself, in the 
Analecta Scotica, v. i. p. 126 et seq. It is printed in a separate form with the 
title “ The Autobiography of Sir Robert Sibbald, Knt. M. D. ; to which is pre- 
fixed 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 1 722, 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.” 
