Flustra. 
Z. ASCIDIOIDA. 
285 
colour.— — It was first found on the coast of Sussex, adhering to a 
shell. I have since met, on the same coast, about Hastings, in the 
year 1765, with several specimens, whose tops were digitated, and 
others that were very irregularly divided.” Ellis . 
As this is very certainly distinct from the F. papyracea of Linnaeus, 
I have preferred the name of Gmelin. Dr Fleming seems inclined 
to consider the species as a variety of the preceding. For my own 
part I know not how it is to be distinguished from that which follows. 
3. F. truncata, cells linear-oblong , with smooth margins. 
Plate xxxv. Fig. 3, 4. 
Fucus marinus scruposus albidus augustior compressus, extremitatibus quasi 
abscissis, Raii, Syn. 43, no. 10. Morris. Hist. Plant. Oxon. iii. 646, 
tab. 8, fig. 17, opt Narrow leaved Hornwrack, Ellis, Coral. 69, no. 
l,tab. 28, fig. 1, a. A, B Eschara foliacea Lin. Syst. edit. 10, 804. 
E. securifrons, Pall. Elench. 56. Flustra truncata, Lin. Syst. 
1300. Mull. Zool. Dan. prod. 253. Ellis and Soland. Zooph.^ll. 
Berk. Syn. i. 214. Turt. Gmel. iv. 663. Wern. Mem. i. 563. Turt. 
Brit. Faun. 209. Stew. Elem. ii. 436. Lam. Anim. s. Vert. ii. 157. 
2de edit, ii- 219. Corail. 44. Bose, Vers, iii. 140. pi. 30, fig. 1. Risso, 
L’Europ. Mend. v. 334. Grant, in loc. cit. 111. Flem. Brit. Anim. 
535. Hogg's Stock, 36. Johnston in Trans. Newc. Soc. ii. 264. pi. 
12, fig. 1. Templeton in Mag. Nat. Hist. ix. 469 La Flustre tron- 
quee, Blainv. Aetinolog. 450 
Hab. In deep water, very common. 
Attains a height of four or five inches, very bushy, of a straw-co- 
lour, smooth, varnished when dry, rather thin in texture, origina- 
ting from a matted base formed of capillary fibres, which, by their 
union, compose a short stem that divides, after a dichotomous man- 
ner, into numerons flat narrowish segments, either linear or dilated 
upwards. From the edges of these there often sprout out wedge- 
shaped leaflets, affixed by a small pedicle, simple at first, but after- 
wards deeply bifid : the ends of all the segments are abruptly trun- 
cate. Cells linear-oblong, their septa unarmed, usually marked with 
a black dot towards the centre, which seems to be the remains of 
the shrivelled polype, and at some seasons covered with a hood-like 
operculum. 
* * Foliaceous, with cells on one side only. 
4. F. careasea, cells oblong , narroiced and truncate below , the 
margin toothless. Dr Skene. 
Plate xxxvi. Fig. 1, 2. 
Flustra carbasea, Ellis and Soland. Zooph. 14, pi. 3, fig. 6, 7. Turt. 
Gmel. iv. 663. Wern. Mem. i. 563. Turt. Brit. Faun. 209. Stew. 
Elem. ii. 436. Lam. Anim. s. Vert. ii. 157. 2de edit. ii. 221. Bose, 
